Why Protein Isn’t Always Enough: Anabolic Resistance, Obesity, and Protein Efficiency | Dr. Nick Burd

15 Jul 2025 · 1 h 6 min · 23 chapters

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In short

Muscle-building and aging/obesity are limited by “anabolic resistance” and poor protein efficiency—not just total protein intake. Obese muscle can have normal muscle quantity but poor quality, with impaired remodeling due to factors like intramuscular fat, reduced capillary supply, and impaired signaling (e.g., mTOR access). Protein timing matters differently for resistance vs endurance athletes; endurance exercise creates negative leucine balance that may require faster amino-acid delivery.

Guest

Dr. Nicholas Burd (Nicholas Nick Burd), researcher and “world-leading” expert in muscle metabolism, especially obesity and muscle anabolic resistance across age and dietary patterns.

Key claims

  • More protein doesn’t automatically fix anabolic resistance in obesity.
  • Resistance training consistency improves muscle protein efficiency; obese muscle needs intrinsic “quality” improvements.
  • Muscle protein synthesis reflects remodeling capacity (net protein balance), not simply hypertrophy.
  • “No such thing as a non-responder” to exercise/nutrition; responses vary.

Notable examples

  • Study using 36 g protein bolus: obese participants still showed blunted muscle protein synthesis response.
  • Epigenetic “memory” concept for long-term obesity effects.
  • Enzyme/protease work: microbial protease increased postprandial plasma amino acids after pea protein ingestion (conference abstracts/published work mentioned).

Written by AI. May contain mistakes. Listen to the episode to check what was said.

Chapters

Tap a time to open that second in VO

Understanding Anabolic Resistance

1:34 to 2:30

Explore the challenges of building muscle in obese individuals.

“Nicholas Nick Bird, I'm so excited to have you on.”

The Role of Consistency in Muscle Health

2:30 to 4:27

Discover why consistency in training is crucial for muscle maintenance.

“am very curious to hear your thoughts on.”

Intermuscular Adipose Tissue and Recovery

4:27 to 6:25

Learn about the impact of intermuscular fat on muscle recovery and health.

“How long does it take for them to be able to recover that tissue, if ever, right?”

Epigenetics and Obesity

6:25 to 8:11

Understand how obesity and muscle memory are influenced by genetic factors.

Epigenetics and Obesity

10:05 to 11:23

Understand how obesity and muscle memory are influenced by genetic factors.

“It's about keeping the right balance of electrolytes and fluids during life's most demanding season that matters even more than ever.”

Muscle Remodeling and Protein Synthesis

11:36 to 14:00

Explore the dynamics of muscle remodeling and the importance of protein.

“So two parts of that equation is protein synthesis and protein breakdown.”

Understanding Anabolic Resistance

14:00 to 16:40

Explore the characteristics that contribute to anabolic resistance in different populations.

“that is not healthy for that individual.”

Mechanisms Influencing Protein Synthesis

16:40 to 22:24

Learn about the mechanisms affecting muscle protein synthesis in older and obese adults.

“You know, an older adult, what do they have?”

Enhancing Muscle Efficiency Through Exercise

22:37 to 26:40

Understand how resistance training can improve muscle efficiency and protein utilization.

“So I guess what you're saying is that in one hand, these are very discreet moments in time.”

Digestive Anabolic Resistance in Older Adults

26:40 to 28:00

Examine the concept of digestive anabolic resistance and its impact on older adults' nutrition.

“That's why I went over there and spent some time to learn the techniques and super expensive.”
Show all 23 chapters

Exploring Enzyme Blends for Nutrient Release

28:00 to 31:28

Learn how enzyme blends can enhance postprandial nutrient concentrations.

“So we were charged with trying to enhance postprandial nutrient concentrations by using enzyme blends.”

Research Excitement and Protein Requirements

31:38 to 33:38

Discuss the excitement in research and the implications for protein requirements.

“I'm interested in the food matrix stuff.”

Understanding Protein Needs for Athletes

33:38 to 37:18

Explore the differences in protein requirements for weightlifters and endurance athletes.

“Certainly the obesity-related questions you were asking are really important.”

The Role of Amino Acids in Endurance Exercise

37:18 to 41:53

Learn about the importance of amino acids during endurance exercise and their oxidation.

“I think that the majority of the food we're over-consuming is processed.”

Endurance Athletes and Leucine Balance

42:04 to 43:05

Learn how exercise affects leucine balance and the dietary needs of endurance athletes.

“So they have all this oxidative amino acid waste that's induced by exercise.”

Protein Timing and Recovery Strategies

43:05 to 44:34

Explore strategies for optimizing protein intake and recovery for athletes.

“And like I said, provide enough substrate.”

Critique of the Protein RDA

44:34 to 46:30

Understand the limitations of the protein RDA and its implications for different populations.

“So I did want to learn it in my defense.”

The Anabolic Window Concept

46:30 to 49:10

Discuss the concept of the anabolic window and its relevance for athletes' recovery.

“I mean, it's just, yeah, I guess my only point is that the protein RDA is a starting point.”

Food First vs. Supplements

49:10 to 51:18

Learn the importance of prioritizing whole foods over supplements for athletes.

“I mean, the work we've done with Stu in terms of that anabolic window, we've showed it for years that it's been prolonged.”

Nutrient Interactions in Foods

51:18 to 54:31

Examine how nutrient interactions in whole foods can enhance anabolic responses.

“then that's where you can return back to that food first approach.”

Exploring Food Matrix Effects

54:31 to 56:00

Investigate how the food matrix impacts protein effectiveness and anabolic response.

“So we were adding, right, we were trying to do different co-ingestion strategies.”

Exploring the Lipid-Dense Food Matrix

56:00 to 1:02:16

Learn how a lipid-rich food matrix impacts the anabolic response post-exercise.

“And then what we did was we re-engineered that salmon in an isolated beverage.”

Anabolic Resistance and Food Matrix Manipulation

1:02:16 to 1:04:28

Discover how manipulating food matrices can help overcome anabolic resistance.

“And that's sort of some of the concepts you were making.”
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Transcript

Automatic transcript. May contain errors.

0:00Dr. Gabrielle Lyon:Is it ideal to build muscle on a vegan diet? Does protein timing actually matter? And why does gaining muscle seem so hard, even when you're training consistently and eating enough? To keep high quality muscle mass, we need to ensure it's turning over, right? So with obese muscle, the quantity's there, but the quality is poor. Muscle protein synthesis isn't just about what you eat. It's about when you eat it and how your body, the efficiency, absorbs it. How your hormones, your gut, and your body composition can change the entire equation. Really the most important variable is consistency, right?

0:41Find something you enjoy, that you enjoy going to the gym, and do it, right? And that's the most important.

0:48Dr. Gabrielle Lyon:Dr. Nicholas Byrd is one of the world's leading experts in muscle metabolism, especially obesity, how age and dietary patterns reshape the body's ability to build and maintain muscle. His research challenges a lot of assumptions that plant-based diets can't support strength, that protein timing doesn't matter, that more protein always equals better results. If you're an athlete or a midlife woman or just someone who wants to age with strength, this episode is for you because muscle isn't just about aesthetics. It's your metabolic body armor, and the way you feed it matters more than ever. Let's break down what it really takes to make protein work for you with Dr.

1:34Dr. Gabrielle Lyon:Nicholas Bird. Dr. Nicholas Nick Bird, I'm so excited to have you on. I have been following your work for years. That's right. I have like a celebrity sitting here. Yeah, that's me. What I think is so fascinating about your work, And I think the first time that you actually published on obesity and anabolic resistance, it must have been 10 years ago. Was it? I'm old. Oh, yeah. Looking good for old. But it was so fascinating because in clinical practice, what I was seeing was that when someone was obese, I couldn't figure out why I just wasn't seeing that. Again, this is anecdotal. I was very early on in my career.

2:14Dr. Gabrielle Lyon:I couldn't figure out why it seemed as if they weren't responding the same way a, what did you call it, healthy lean or - Yeah, healthy weight. Yeah. Healthy weight individual was. Yeah, that's right. And throughout the years, I started thinking a lot about intermuscular adipose tissue, which I am very curious to hear your thoughts on. But really, when we think about anabolic resistance and why I opened with that is ultimately, in order for people to live well, healthy, strong, they obviously need good muscle not just from mobility and strength but really from that metabolic perspective yeah and if they can't maintain it or there is um some challenge with training or nutrition yeah the opportunity to live well becomes somewhat diminished and this is where your work comes in for intervention like when you look at obese muscle the quantities there right but you know what my work is particularly showing and others as well is that it's really a quality problem right so you know to keep a high it's really important to live well or you know aging strong is always also another uh thing we're concerned with as well um is that to keep high quality muscle mass we need to ensure it's it's turning over right so with obese muscle the quantity is there but the quality is poor right and it's likely due to multiple factors mechanistically as well as that enhancement of all that intramuscular adipose cells as you alluded to and yeah so we need to improve the quality and what what interventions work right we tried to acutely kickstart the muscle it didn't work but it doesn't mean training well right because you know with everything um consistency right consistency is key right so i can do you know during my dissertation with stew phillips we did all that load manipulation right high load versus low load all that good stuff volume yeah issues as well um but as we always say you know really the most important variable is consistency right find something you enjoy that you enjoy going to the gym and do it right and that's the most important uh i think with a beast muscle i think the consistency might be might be the key even more so 74 percent are metabolically unhealthy yeah i mean that's a lot of people yeah and when i think about your work also uh your upcoming work i'm curious as to again we probably don't know which comes first is if someone has subcutaneous fat is that the problem or is it really the level of lipids within and the placement and location of lipids within the skeletal muscle and before you answer i have to ask you this because i i would love kind of in your uh to frame it up in totality what you're thinking but if an individual is obese and let's say we define that as body fat percentage over i don't know 30 percent yeah i mean yeah i I mean, you know, BMI, but it is better to use percent body fat.

5:23Dr. Gabrielle Lyon:Or BMI.

5:28Dr. Gabrielle Lyon:How long does it take for them to be able to recover that tissue, if ever, right? So, for example, if someone becomes obese or is obese, then they lose weight. At what point do we see? Is there an intermuscular adipose percentage? At what point do they then revert, if at all or ever? So if the listener is at home thinking, wow, I've been obese my whole life. I've never thought about that. Or they're a kid, maybe kids don't listen to this, but parents do, if that is someone who is newly put on weight, fat tissue, where do we think in terms of the spectrum of what is possible for treatment? I mean, that's a good point.

6:05I mean, so this is probably within the last six years, this has been something we've been thinking about. In terms of when we're recruiting participants, it is something I don't have a great answer for. but how long have they been obese right is somebody who's just recently become obese right different than somebody who's been obese for a prolonged period of time right even adolescent obesity you know something this is tiptoeing outside my area of expertise just you know through interactions with colleagues and you know you know it all comes back you know that whole concept of epigenetic regulation so your dna is probably getting tagged right so it's remembering so let's say you're as a child right you you put on excess excess adipose tissue now you're putting different tags on your dna such that it it remembers that right so once you lose that excess adiposity you're you still remember it right um that's a lot of preclinical work so the rodent work suggests that concept of uh epigenetic memory or you know you're gonna say muscle memory yeah that's like that's also a phrase i've heard muscle memory um as well so i mean they use it from a training standpoint too so a lot of my colleagues tiptoe around that area um you know in terms of stuff we've done we try to think about it i haven't you know in terms of a lot of our work is more you know we just make sure and this is just something we've done trivial i don't have any evidence to say at least you know when we're recruiting obese participants at least for you know they've been obese for about a year prior but that's just a trivial number or a trivial duration um i think it's it's interesting i mean it's something you got to think about um experimentally we think about it um rather there's this existence of you know that epigen or that muscle memory in terms of remembering hey you know what i've been you know my muscles been surrounded with all this excess fat you know when i was a young and now you know i got old found the gym found better nutrition i lost it maybe but there's no denying that at whatever age nutrition and exercise works i'm sorry right and i yes and there's no um you know i in this whole concept of responder versus non-responder you know like we said there's no such thing as a non-responder to nutrition no such thing as a non-responder to exercise there's a variable responder i'll agree with that assertion but is that like an obese yeah i would say that there's just no such i mean i'm sorry nobody's not responding to food you know what i mean they i think it's so easy to use that phrasing but i do believe there's variable response responders and then as we use more sophisticated analysis to understand what are these factors underpinning these variable responses right so the muscle protein synthesis this anabolic response i don't

9:04Dr. Gabrielle Lyon:know if people understand muscle protein synthesis is somewhat of a proxy would you would you define it as a proxy for healthy for muscle for um and for the capacity for turnover for that no i mean what response because it's not a no okay this is yeah this is important um you know i've I gave a presentation recently, you know, on this concept. And sometimes scientifically, I just, you know, when you live and breathe something, you just, you don't, you know, you just sort of a given. So, you know, the first thing to understand is that muscle protein synthesis. So what we study in the laboratory, we're studying directly, right?

9:47So your comment, is it a proxy for something? So really what you're interested in when we're thinking about muscle remodeling, right?

9:58Dr. Gabrielle Lyon:Exactly right. Turnover, okay? Now, hydration isn't just about drinking Coke Zero or sugar-free Red Bull. I'm saying that for a friend. Or even drinking just more water. It's about keeping the right balance of electrolytes and fluids during life's most demanding season that matters even more than ever. So, for example, if you are pregnant or postpartum, your body is going through massive changes. Blood volume, hormone shifts, breastfeeding demands, I don't know, crying kids, all of it. And this is a place where you need electrolytes like sodium, magnesium, potassium. Element was formulated to replenish what you actually use without sugar, fillers, or junk.

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11:35Dr. Gabrielle Lyon:Stay hydrated. Stay strong. So two parts of that equation is protein synthesis and protein breakdown. All right. Now, when you're thinking about which variable to trace to try to predict muscle remodeling, an obese muscle, an aging muscle, protein synthesis is a good variable to understand muscle protein remodeling because it's just moving the most, right? So when we look at muscle protein remodeling, we really defined it by net protein balance. So when you're in a positive state of remodeling, you're in a positive state of net protein balance. And so when you're trying to manipulate that equation, you want, obviously, to either turn on synthesis or minimize breakdown or whatever combination you want to do.

12:30So generally, even though we don't think obese people are healthy per se, but obese, I was almost going to say healthy, healthy obesity. Do you believe there's such a thing? Well, sometimes it's interesting because, you know, we'll study some of these participants who are, it depends on what you're looking at, I guess, because sometimes we'll see somebody who has, who is obese clinically, but yet their glucose tolerance is just, you know, just rock star. You know what I mean? Very normal glucose tolerance.

13:02Dr. Gabrielle Lyon:Do you look at intramuscular adipose tissue? We have imaging techniques to do it. I prefer, I think you alluded to this earlier. it's such a dynamic question right so the location the distribution the size of that lipid droplet how close to the mitochondrial is that lipid droplet is it tethered to that mitochondria right so it's very complex you can get some of that stuff from advanced imaging at least visually but you know it's difficult we like to get in there and actually chase it and here's the reason I ask because we're talking about anabolic resistance in obesity. And that's really defined by BMI or percentage.

13:44Dr. Gabrielle Lyon:And over the years, clinically, I think that while we have these definitions based on large populations, if someone, let's just say in this, and I don't mean to anger anybody who's listening, let's say a 25 % body fat, that is not healthy for that individual. And then you see that. So they're, you know, again, they, whether it's, yeah, I think that just simply stating it like that. And that's why I wonder if an individual with various levels of fat within that tissue, which is very dynamic, like you said, plays a role. There's characteristics of certain people, and this is where we need to define.

14:31What is the characteristics that are allowing anabolic resistance and obese muscle to be really strong? Or what are the characteristics that are making it be less relevant? The same with the leucine threshold. What are the characteristics where that leucine is really important, right? The older adults make sense, right? Usually when you have less lean mass, you probably have more, you know, greater fat mass and you're just less sensitive. But the other, you know, that concept of a young person with more lean mass seems to be a little more responsive or might be better. That's, you know, in anabolic resistance is, you know, if you were to say, okay, like what's the linchpin of how we can move these people forward?

15:14Yeah.

15:15Dr. Gabrielle Lyon:They have to eat. 50 % of Americans are not exercising. Yeah. And I'm curious, so you, when you were talking about this study that you did, you gave them 36 grams of protein and they didn't mount a response. Yeah. And that was just because, you know, we didn't have the money to do a dose response in obese muscle. And, right. And, you know, if you look at older adults, sometimes they need a little more. And a lot of the models we look at, correct, right. You see that an older adult might need a little more food protein to initiate a big rise in myofibrillate protein synthesis relative to the younger counterparts.

15:45Dr. Gabrielle Lyon:What do you think some of the mechanisms? So if we were to think about, you know, I am really interested in this anabolic resistance because very few people have studied it the way that you guys are studying it and have. What are some of the mechanisms of anabolic resistance? And are they different in obesity versus aging? Can we parse those out? Yeah, I guess that's, yeah, I got sidetracked a little bit. Yeah. So, you know, anabolic resistance probably comes in various shapes and forms for one. Right. So, you know, you and I are probably inducing some level of anabolic resistance when we, you know, through sedentary behavior when we sit here for a couple hours.

16:31Right. But the beauty is we're going to get up and move around. Right. That's the whole concept of exercise snacks. you know getting up and every 30 minutes to an hour making sure we're doing some movement to sort of ensure that we're not inducing some transient anabolic resistance all right so that's you know getting rid of that but when we think about an older adult or older muscle versus a beast muscle and that was sort of my point so we fed that big bolus 36 grams why because in past we've shown that that's sort of been able to successfully overcome anabolic resistance with aging right um and so when we saw it with 36 grams in a in our original study that was conducted by joe beals when he's doing my phd with him actually he's at washi now too um has been there for a while with sam klein but um the fact we still showed it i was like wow that's crazy they're still resistant to that 36 grams of food protein but when you sit back and think a little more about it.

17:31What do we know about an older adult? You know, an older adult, what do they have? They have muscle anabolic resistance, but they also have digestive anabolic resistance, right? So it makes sense when you can sort of one way to overcome that digestive anabolic resistance is maybe, or have they shown, eat more food protein, right? Overcome that digestive anabolic resistance to get enough substrate to the muscle to help robustly stimulate myofibrillar protein synthesis, right? What we know about an obese muscle or obese person, they don't have a problem. They don't have a digestive anabolic resistance, right?

18:13So feeding more and more food protein to obese adult makes zero sense because there's no issue there. The issue is intrinsic to the muscle, right? We got to fix, yeah, we got to fix the muscle, right? And what are some of the problems? Well, you know, the first factor is probably poor capillary supply, right? They're struggling to get the nutrients there, right? The second one is probably, you know, that fact we can't get mTOR, it's probably caught up in the sarcoplasm. It can't get up to that hub very well. So not only can it get up to that hub, the plasma membrane, but they don't have capillaries there to support it, right?

18:57They have all that, you know, that intramuscular fat interfering, right, with the signals, right? And collectively, all those factors, you know, which comes first, I think you were sort of alluding to earlier. I don't know. Is it the fat that's initiating all these problems? Maybe, probably.

19:13Dr. Gabrielle Lyon:With the muscle protein synthesis, you guys are measuring that when you say it didn't mount a response, what is it that you're just very simply, what does that mean? That's generally a good indicator of the net protein balance equation and then the subsequent remodeling response we're getting. And I like that you're pointing out that it's remodeling, it's not necessarily growth. Yeah, it's not a growth marker. That's a remodeling marker right maybe for you it's you know it's a better predictor of growth that sort of goes back to that variable responder but for me it's you know clearly it's not but it's but i think it's an important point it's an important point because uh if someone were to look at the literature out there the majority and let's say they're not an expert and they're going because they want to learn more about it and they like to spend their free time going on pubmed and it says muscle protein synthesis and i think in the social media landscape that's people equate that with growth and hypertrophy and really the majority of muscle protein synthesis 250 to 300 plus grams is really with that uh turnover yeah it's a remodeling marker it's a remodeling marker yeah maybe five grams potentially a day like i don't know a day max well the point is is like when we eat food what do we do?

20:34We turn on remodeling, right? Just sitting around eating food without exercise, you're not going to expand your myofibrillar protein pool. But you are remodeling because it's very important. We got to get rid of those old damaged proteins and replace them with new ones, right? To keep a healthy, you know, proteomes. And that's the key.

20:53Dr. Gabrielle Lyon:It's the health and the ability to do that as an individual ages potentially, or if they're obese, which brings me to this idea of resistance training. In some of your studies, resistance training didn't necessarily boost muscle protein synthesis with obesity the same way that it does in lean individuals. Beer sheets feel like a paper towel from a gas station bathroom. Gross. It's time to upgrade. And I have been obsessed with cozy bamboo sheets. They're temperature regulating. They're guaranteed to give you a comfortable night's sleep. And they're made from viscous from bamboo. They help me sleep several degrees cooler.

21:34Dr. Gabrielle Lyon:And recent studies report cooler temperatures facilitate the body's natural drop in core temperature, which of course leads to faster sleep and improved sleep quality. Also, reduced risk of night sweats. So if you're an individual who's experiencing night sweats, such as someone who is undergoing menopause, these sheets are for you. And we've partnered with Cozy Earth to bring you this episode. They've also offered you a 100-night sleep trial. You can try them for free, the hottest nights of the year. And if you're not in love with them, return them. No questions asked. Super easy. They also have a 10-year warranty on all bedding products.

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22:24Dr. Gabrielle Lyon:So upgrade your night sweats and go to CozyEarth.com and use the code Dr. Lion for 40 % off the best, most luxurious sheets that I have ever tried. It's probably related to those. It's an intrinsic problem. We've got to fix some of those. What are we going to do about it? Consistency with exercise. Easy. Do you think over time? But that's fascinating. So I guess what you're saying is that in one hand, these are very discreet moments in time. Yeah. And that potentially over time, does that tissue, that response become more attuned to training? So this is where what I think is we can make the muscle more, the phrasing sometimes I use is efficient, right?

23:08So protein efficiency. We can enhance the protein efficiency of our skeletal muscle tissue. And I think we can do the same by using resistance exercise in particular in an obese muscle. I think consistency with the resistance exercise will help correct some of these problems. Not saying we don't use endurance exercise to help, obviously, but I think resistance exercise is paramount, right? And one reason, when we think endurance exercise, it's a completely different animal than resistance exercise in terms of how it's impacting efficiency.

23:41Dr. Gabrielle Lyon:What is protein efficiency? I don't know. That's a good question. All right. Just the podcast is over now. You know, how do you define it, right? that's another phrase I always use a number of times, what are you talking about? I'm like, what do you mean, protein efficiency? It just makes sense. Definitionally, I mean, I guess I put a definition on this in some of my grants. But essentially, when I'm thinking about protein efficiency, when we consume the same absolute amount, so if we eat 20 grams of food protein, right, if you're efficient with your food protein, what's going to happen is you're going to get a large incorporation to the myobriller fraction with minimal oxidative waste, right?

24:26And so that's a good definition.

24:28Dr. Gabrielle Lyon:You wrote that here. Oh, yeah. Did I? Yeah, maybe. Okay. Yeah, probably. And so what I think we can do with resistance exercises is actually increase your protein efficiency because resistance exercise is fundamentally anabolic, right? It's kind of different than what we see with endurance exercise. sounds like it should be easy and well this is the bio behaviorists or practitioners now you need to find out to make exercise fun it is fun because i don't have the time to stand there and just motivate you know you said something dad jokes all day long when people are exercising very fascinating and it was about this idea of using um you didn't say microbial protease but I know that you worked on a study there what was the name of the was it amplify do you remember that study I think that oh the pretty lytic enzymes yeah yeah you had mentioned this idea that efficiency is important yeah efficiency is it seems somewhat up to us as to how our behaviors shape whether we are not wasting what we are consuming yeah I will piggyback and say we have to eat something whether we're eating carbs proteins or fats one could choose uh protein again maybe to support beyond muscle protein synthesis there are probably many utilizations or uses for those amino acids like mucin and um you know from threonine or dopamine or any of those other things i think we presented some of this stuff at conferences too.

26:04So, um, using, um, proteases or I have the paper here.

26:08Dr. Gabrielle Lyon:I read it. Yeah. We haven't, we followed up some of that work that I think is more interesting. Um, so we, we did that same thing and older adults and said we fed a mixed meal. Okay. And then, you know, one of the objectives with that study is obviously with older adults, I just sort of said they have digestive antibiotic resistance, right? One way they're trying to overcome that is this here, here, grandma and grandpa eat a bunch of food right more which doesn't make sense i didn't pause you on the digestive anabolic resistance can we just take a second there sure um when i think about digestive anabolic resistance if we define anabolic resistance as this decrease can we say inefficiency for muscle to respond the way it should luke studies are luke bound loon over in the netherlands um his studies are cool because what he shows is that um an older adult has when you eat, in this case, a lot of his dairy manipulations, that they have a reduced protein digestion absorption kinetics.

27:11Dr. Gabrielle Lyon:I mean, we see that in practice. Yeah. Obviously, we don't do protein. No, no. But we see it with... So he has, I mean, the best tools. I love that stuff that he does. That's why I went over there and spent some time to learn the techniques and super expensive. But I admire Luke a lot. Like I said, he's one of my science heroes. But he has, he shows, he shows that. And so back to your question, I think is, you know, older adults have satiety issues. So one of the things we were. Meaning they are hungry less. Yeah, yeah, exactly. So like I said, just trying to get them to eat more and more food.

27:46Why it might help, you know, get some more of that substrate into circulation to help give a big push on muscle protein synthesis. it might not be in practice that reasonable. So we were charged with trying to enhance postprandial nutrient concentrations by using enzyme blends. So not only proteases, but trying to get more glucose, fat, everything in the circulation. So can we use an enzyme blend to try to help facilitate nutrient release? And we were somewhat successful, I think.

28:29Dr. Gabrielle Lyon:Would you take a microbial protease? Would I personally? If you were older, more mature? Maybe, I don't know. 65 and up? Would I recommend it to my grandparents? Yeah. Sure, yeah. Would I do it? Yeah, I don't know. I don't think much about when you have kids and everything. It's life's, you know. Trust me, I'm getting enough food protein. What did you guys find? Did it actually? It did. it's not a published study it's only been in conference form abstracts and whatnot um can you talk about some of it or yeah so i mean it's been at conferences um i can't remember which one here i'll let me shoot it over to you ready yeah acute my microbial protease supplementation increases net postprandial plasma amino acid concentrations after p protein ingestion yeah that was the p protein study which which has been published yep right this was another study that was with using an actual, what I was more interested in was a mixed meal.

29:29And this is the study I was telling you about.

Read the full transcript

29:31Dr. Gabrielle Lyon:And you are very interested in food matrix. And there's a, again, when we look at the landscape of protein, it's, we're not giving tagged, I mean, people aren't eating tagged amino acids or. No, well, you don't need to. It's just a tool that we have to, to understand how metabolically, how they're responding to nutrition and exercise. Now that That study was done in younger folks, the one you're referencing with the pea protein. The study I was really keen on was the one that's only been published in abstract form. So in that study, our only objective was trying to enhance the post-prandial release of dietary amino acids to pea protein, which is a plant-based protein.

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30:54Dr. Gabrielle Lyon:So whether you've been active, resistance training your whole life, or you're just getting started, Timeline can help. They have a beautiful product line with a low sugar, vegan, non-GMO and gluten free new gummy, which is amazing. They also have MitoPure berry or ginger powder. You can mix it into your daily smoothies. If there is one product that I strongly suggest that you take, it is MitoPure. And Timeline is offering our community 20 % off your first order of MitoPure. Go to TimelineNutrition.com slash DrLion and use the code DrLion to get 10 % off your order. that's t-i-m-e-l-i-n-e nutrition.com slash dr lion what are you really excited about doing i mean i have a a paper here or this is a it's not a paper it's um it's a proposal yeah oh yeah that oh something i sent over yeah yeah you sent it over yeah so we got we got and it's fascinating and i'm just curious i don't want to say anything about it i'm i would love to hear from you is there something that you are really excited about uh you know i get excited about i love science like i'm if you look at my career you probably notice like i'm all over the place in terms you know i'll study dialysis patients i'll study um we just got a nice grant uh through the ada to study some uh protein requirements for type 2 diabetics um this obesity related stuff i'm i'm really interested in.

32:35I'm interested in the food matrix stuff. You know, I always say if we're not having fun, what's the point? You're right. I get excited when I see my students get excited. I love it all. I mean, you tell me, I just like the pursuit of the research question. And, um, I do have a tendency to get bored easily. So I like my, you know, each student has a little different concept and each one of them, there's something exciting about them all. Like I said, the biggest enjoyment I have is seeing the excitement of of them right so the fact whenever whatever research study we're studying just to see the students how pumped out pumped up they are about it I like I mean I'm a big science nerd I like methodological questions where I'm doing some stuff with Dan Moore that more methodological just trying to understand the tool that kind of stuff excites me but you know the clinical work is interesting the performance nutrition work is is is interesting I'm trying to understand some of this endurance exercise, protein requirements stuff.

33:33I don't think we got a good handle on those aspects. Certainly the obesity-related questions you were asking are really important. How can we overcome this obesity, anabolic resistance? I think consistency with resistance exercise is going to be key.

33:49Dr. Gabrielle Lyon:Do you think they need a different diet? So, for example, you're going to be studying type 2 diabetes, diabetes, diabetes with protein. Do you think the diet or the training recommendations need to be different? I don't know. I mean, again, I mean, we don't have it. I don't have enough data. This is where, like I said, we got to do the studies. And then we got to use more sophisticated analysis to understand it, right? Because there's going to be inherently variable responders. That's just, you know, we're not easy people to understand humans. I mean, you do teach on performance. Is there anything that, again, you're not really on social media at all.

34:25No.

34:26Dr. Gabrielle Lyon:From feedback from your students, do you find that there's something that is vastly different from an academic perspective versus what someone thinks, whether it's the amount of protein endurance athlete needs or, yeah, anything like that that would be helpful for the audience? the biggest thing i i have to talk about is you know what they're really surprised about is the protein requirements between a weightlifter versus an endurance athlete right this whole concept of um you know optimal versus maximal these kind of concepts right and like i said there's no problem with eating protein in excess if that's what you want to do do it for a healthy kidney i can handle it right but my point is you're creating it's a that's a maximal way to eat right if you want to eat maximally go for it i don't care it really impacts me very little right um if you want to eat optimally here's some things to think about right because a maximum response is how i view it is just shovel in as much food protein as you want make you know just eliminate anything about requirement right because you just overshot it and let your body eliminate the waste, right?

35:44So just get high oxidative rates, right? That's fine. You can do that. That's great. But guess what? Like I said, your gut now is going to take more of it. You're going to have higher splegmine extraction. You're going to have enhancement in your proteolytic enzymes. It's not a problem per se, but, you know, when you go to eat your next meal, let's say, not most of us still have zero issue with finding food protein in the U.S., but let's say you've been eating maximally, So, you know, 30, 40 grams of food protein per meal. Now you've only encountered 15, right? It's going to be different metabolically than somebody who's been eating 15 to 20 grams of food protein as part of their normal pattern and eating more optimally because, you know, I see it all the time, 1.6 grams per kg per day, right?

36:30That's the recommendation for weightlifters I see online all the time. Maybe upwards to 2.2 grams of protein per kg per day. but have you ever looked at that confidence interval that 95 confidence interval why not recommend why you why are you going that way why why not go this way as opposed to 1.2 yeah or why not eat at the lower end of that confidence interval why why i don't know why why why is the translation by default eat that way because you could equally eat this way that's what that data is telling me they just looked at the breaking point and it came at 1.6 right so So, you know, I know why they're doing it because it's easy translation.

37:12Dr. Gabrielle Lyon:Do you worry about, so if the average American eats 300 grams of carbs a day, do you worry about where, you know, I think that the majority of the food we're over-consuming is processed. Yeah, of course, yeah. Ultra-processed. But that's more education, you know what I mean? But you think educating people to eat more food proteins is the right education? I think we have a lot of work to do. Yeah, I don't think that's eating protein in excess. I don't think is the education's standpoint. Understanding that, you know, different foods are, you know, in terms of the protein quality, how they're interacting, it's all education.

37:49I mean, just pretending like, you know, people can't learn is crazy. Oh, the reason I do that just for ease of translation. Well, that's fine. But why not educate them then? That's our point as a – but just running around saying you need this much food protein in excess. I'm not saying it's going to hurt them, but that's just a crazy recommendation. I just told you with a weightlifter, you're just making a system completely inefficient. If you want to make that recommendation, perhaps an endurance athlete. How much exercise?

38:20Dr. Gabrielle Lyon:Yeah, right. If I think about muscle health, the biggest driver is likely training, right? Some kind of stimulus. This is definitely, whether it's resistance or endurance, with endurance, how should they structure their nutrition? Yeah. I mean, you know, the biggest variable, you know, just to put this in it, you know, everybody, I come on nutrition podcasts sometimes. You know, they want nutrition. You know, the biggest thing I can say is be consistent with your exercise, right? Find something you do. Find something that makes you smile, right? And that's the first thing. I think that's the most important thing we can do as practitioners is try to identify activities.

39:02We, you know, something we can make somebody be consistent with. Right. And the nutrition is important. Don't get me wrong, but that that's a really big piece. Now, you know, a lot of times, you know, we're talking to, you know, when I'm talking to athletes and whatnot, that's not that's not the problem. Because they're rather being coached to as part of their training program. They have to be pretty active. So when we're thinking about an endurance athlete, right, a little different scenario than a weightlifter. Um, they're not fundamentally anabolic, they're really catabolic, right? So, you know, what happens when an endurance athlete goes for a run, right?

39:38They're running, you know, for what have you, whatever, say 60 minutes, right? Pretty intense, 70 % VO2 peak, what have you. Um, you know, a lot of times we think protein as an oxidative fuel is non-existent, right? That's why we use all these non-protein RQs and everything.

39:58Dr. Gabrielle Lyon:So you saw upstairs in my drawer. Now, but protein, that's a pretty overarching word, right? And even Don's big on this, right? I think I've even heard him say. He's the one who talked about that. Yeah, Don has this funny, cool saying that he's like, you know, saying protein requirements like saying a vitamin requirement, right? You eat one, you have them all, right? It's the same with, you know, if I eat vitamin D, I'm good. but it's not real, right? Same with protein, right? You really got to zoom in and look at different amino acids. And so, you know, some of the interesting ones with endurance exercise and from an amino acid and metabolism standpoint, right?

40:37You got alanine, glutamine, leucine. So if we just focus on that, right? So when an endurance athlete is running, right? They might not getting a lot of protein oxidation, but they're getting leucine oxidation, right? We're pulling those carbon skeletons out to make acetylcholine to run them through the Krebs cycle.

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41:40Dr. Gabrielle Lyon:It's not really about this cosmetic quick fix. We talk all about health and wellness, but we typically talk about it from the inside. And this is something that you can put on topically to affect the health of your skin. So go to oneskin.co, that's O-N-E-S-K-I-N.co, and use the code Dr. Lion for 15 % off. Right. And then what do they do? They stop exercising, right? So they have all this oxidative amino acid waste that's induced by exercise. Now they need to eat food protein in the post-exercise state. So they need to not only, that food protein has to do two jobs. It got to replace that leucine oxidative loss.

42:31And you also need to provide enough substrate to support that remodeling response. So our work has shown that if we take an endurance athlete, have them run for an hour, look at leucine net balance, right? Which oxidation is going to play a factor in that. So guess what happens? Endurance athlete runs, they get into a negative leucine balance, right? So catabolic. We feed them food. We couldn't recover that leucine net balance because that food is fighting two battles. It has to replace that leucine oxidative loss. And like I said, provide enough substrate. So now we're trying to think about what strategies can we use for an endurance athlete because they also got to be concerned about carbohydrate right so what strategies can we do to help this endurance athlete recover they're losing that balance right so that's some of the stuff we're working on now that's some of that stuff's exciting i guess you're asking me about yeah the exciting stuff how can we manipulate um protein timing how can we manipulate protein source to help recover that a weightlifter is it's just kind of easy right a weightlifter can do they can just work out the point you know they should work out you know make sure they're getting a lot of type 2 fiber activation bulk fiber recruitment make sure all your muscles sensitive to substrate amino acid substrate eat something you know i always say after weightlifting you know what's the best um kind of protein to eat well the kind you put in

43:59Dr. Gabrielle Lyon:your mouth right whatever you want to put in your mouth it's going to work an endurance athlete's a little more it's a little more interesting in terms of from a from a meal manipulation standpoint in my opinion we see differences in muscle protein synthesis because do they separate the type fibers out or is it it just uh luke van loon's done some of that it's a lot of work i remember i was like when i was a postdoc i went over there and i was a gun ho right i was like luke i want to do some fiber type pacific work and he was just like no you don't and then you were right he just was like no you don't you don't want to do that um no we don't i mean i i you know i'm not the individual synthesis rates and stuff i think scientifically and for basic sciences that's great but i i i like our our because it depends what you're it depends on the research question that's how deep you need to go now is there a particular impairment you know i mean that it's just but how does that impact a recommendation that, you know, it really depends on what you're trying to accomplish, what tools you're going to use.

45:04So I did want to learn it in my defense. I was like, yeah, I want to do some individual synthesis rates and fiber-type specific synthesis rates.

45:11Dr. Gabrielle Lyon:Yeah, it lasted very short. No, he literally wouldn't let me. He was like, no, you don't. I was like. Okay. Do you think that the RDA is a worthy number? No, I mean, I, you know, I like, like I said, Professor Wayne Campbell's approach. um he his argument is that and i agree with him 100 like i said he's he's also one of the guys i admire in the field um we got to stop beating up on the protein rda right why it's sort of you know it does what it's supposed to do it's supposed to prevent a deficiency it's very good at doing that you know we put a lot of pressure on it in my opinion like i always view the protein rda as a starting point, right?

45:56When they developed it, there was not a lot of information on it. It does what it's supposed to do. It does prevent a protein deficiency, but it wasn't supposed to, in my opinion, ever account for, what about a weightlifter? What about, you know, well, it doesn't. It doesn't supposed to account for older adults or perhaps clinically compromised people. What's it made for? RDA, healthy adults, right? so a healthy adult what's it going to do going to prevent a protein deficiency it's was never made to capsule everything an older adult an obese adult anybody who's weightlifting anybody's doing an endurance exercise right so i think it does a good job what i was supposed to do um my other issue is that instead of beating up on the rda experimentally or verbally i guess we need to test experimentally right instead we always and especially in the exercise physiology field we always like to test everything in excess right and i you know i think you know one of the common numbers is that 1.6 grams per kg per day and one of the things i always like to say you know or they like to test this way right they want to keep going in excess but i'm like well why not test the other the other end and i think that's important um who has really tested the protein rda from a you know from a healthy weightlifting perspective but who's tested it well well don did but he went

47:28Dr. Gabrielle Lyon:to 1.6 so don uh for years did some of those first studies and you know i think they're really well done and he looked at the rda 0.8 grams yeah then he looked at doubling the rda which again is what you said a bit higher, 1.6 grams and all of the, and they were isocaloric. Yeah, I remember. Yeah, that's some old work. I know what you're saying. I mean, it's just, yeah, I guess my only point is that the protein RDA is a starting point. My other thing is it's hard to find somebody who's eating the protein RDA. In my hands, they're always eating 1.1 to 1.2. My biggest objective is using weightlifting to enhance that protein efficiency.

48:07My other argument is that perhaps if you're doing other modes of exercise, that number might vary a little bit. For example, an endurance athlete, I think.

48:16Dr. Gabrielle Lyon:Do they need more or less? I think they need more food protein than a weightlifter in terms of somebody who's habitually doing endurance exercise. But we also got to account for what's one aspect of an endurance athlete. They usually have high caloric intakes, right? So it's not that number they need to be concerned about. So again, I think it's the timing after that initial. So if you just got back from a big run, you know, I always hear this concept of anabolic window, the prolonged nature of it. A weightlifter doesn't need to really worry about some particular anabolic window. But an endurance athlete is probably a little more important for them.

48:59Not only from a carbohydrate standpoint, we know that's important. But I would argue from a protein intake standpoint, too, to help them recover.

49:06Dr. Gabrielle Lyon:That's fascinating because we are definitely not hearing about that online. I think that you're hearing that the anabolic window no longer matters unless potentially you're doing maybe exhaustive exercise or you are lower on the total protein intake. But it never. I mean, it was interesting concept. It never mattered. I mean, the work we've done with Stu in terms of that anabolic window, we've showed it for years that it's been prolonged. I've never really understood where that concept even derived from. I think it was just, I don't know. I mean, if you wanted to eat something after your weightlifting bout, go for it again.

49:40Dr. Gabrielle Lyon:Are there any other groups? So endurance, how long do you think the anabolic window is? You're going to make me put a number on it? No, no. I don't know. I mean, with the glycogen resynthesis, I mean, it is short. I mean, usually you want to eat within the one to two hour window, right? That's what I would have guessed. in terms of this leucine balance and it it i don't i don't know but i would argue that we need to be able to recover those oxidative losses so the other concern is make sure that in that post-exercise meal you know this is probably well you know i i advocate a lot for you know food first approaches but food first doesn't mean food only and sometimes people you know let's say it's like no that's it's crazy you're right my only point we're using a food first approach is that everybody likes to go to supplements, right?

50:30That's just where they want to go to that way. But it's like, well, first, you know, think about this, but for an endurance athlete, you know, it's not, like I said, for them, I think we do, they do need to use something that's rapidly, we need to get those amino acids in circulation quick. Isolated food proteins are going to be the best at it, right? And so, you know, obviously, when you co-ingest carbohydrate with even isolated food source, you're going to reduce that acute amplitude of change. So you're going to, in terms of the leucine profile and amino acid profile. So I always, I think, you know, we need to test this experimentally.

51:07I think having a rapid source of amino acids, carbohydrate blend immediately after that endurance exercise bout will help. And then return to that food if you can, depending on your training, you know, mode of training, then that's where you can return back to that food first approach. But I think that timing of that initial meal is real important for them. The overall amount, they're probably fine on. That's my point because endurance athletes eat plenty of food protein on a daily basis. But where I think they might not be understanding is that that post-exercise window for them is probably important to help them recover, losing that balance and support that adaptation.

51:48Dr. Gabrielle Lyon:Do you think that meal has to be? Is it just based on their overall calories? Yeah, I mean, we haven't done. Yeah, I mean, what we need to understand now, we're do some manipulation of sources to see if, you know, to see if, you know, again, I usually, you know, it's always interesting. I mean, whey always got supported as being the best food protein. But when you look at some of E. Boree's work, he's shown that casein, right, for a weightlifter most likely is probably, not that he studied weightlifting, but arguably is probably really, you know, do the prolonged nature of some slowly releasing food protein.

52:29Whole foods will do the same. It's probably better to support protein balance throughout a prolonged recovery period, right? But for some reason, the weightlifters really like weigh. But really they –

52:40Dr. Gabrielle Lyon:The concentrate really – Yeah, something that's more prolonged release would probably be better. But for an endurance athlete, I think the weigh or something really fast is going to be really important for them. So physical structure, we can manipulate the food matrix by – Luke has done brilliant work in that area. Cooking food, right? Mincing up the food, right? Where I've been more interested is trying to take advantage of the nutrient nutrient interactions within food to potentiate the use of the dietary amino acids, right? Trying to optimize a food, right? So trying to prevent, I think I talked about earlier that, you know, you just eat isolated food protein.

53:18You can use whey as an example, right? It's not that interesting because it's just amino acids, right? So what's it do? It goes boom in terms of its postprandial amino acid spike, right? That big spike, you're going to get a lot of amino acids in quite quickly, but you're also going to get a big signal for oxidation, right? Food is kind of cool because it's more prolonged, right? So you're not getting that big leucine oxidative spike in the beginning of the postprandial period within that first two hours. But some of our work has also shown that we can potentiate the use of the amino acids within a meal.

53:55And we showed this by eating whole eggs versus egg whites, right? So eating whole eggs potentiated the anabolic response more so than eating an iso-natrogenous amount of egg white, right? Which was interesting.

54:07Dr. Gabrielle Lyon:I thought that was fascinating. Well, I remember, not to throw Luke Van Loon under the bus, he was like, because this was when I got to Illinois, we were doing some carbohydrate co-ingestion stuff with him. He's like, you already know it's not going to make a difference, right? Or we did some fat co-ingestion. But the cool stuff with that was what we're doing, we were taking isolated fat and isolated casein. Because one of my big missions over with Luke was trying to make casein more anabolic, right? So we were adding, right, we were trying to do different co-ingestion strategies. And one of the strategies was, hey, what happens when we add lipids to casein?

54:44Can we potentiate the anabolic response? And we couldn't, right? Right. So it was interesting when we ate a whole egg, we actually were able to potentiate it.

54:54Dr. Gabrielle Lyon:Do you think it's because it's not based on the macronutrients? It's based on, say, the the other additional compounds in there? Yeah. So, yeah, that's the million dollar question. Right. You always say in that whole egg study, what's in that egg? If I knew that, then I could make a super egg. Isn't there like full not folist, not folistatine? But there's something that they, someone sent it to me. It was a compound in the egg that was supposed to be very anabolic. Yeah, I mean, we tried to understand it. We, you know, we tried. We couldn't identify something. And we followed that up with a salmon study where we fed, after weightlifting young adults, 20 grams.

55:41So I literally, it was funny. I had a salmon flew in because I wanted a big piece of salmon, right? And so we butchered it up, and then we sent that piece of salmon. So all the participants had the same salmon, right? So we sent that salmon away to get analyzed, and then we figured out all the cool stuff in salmon. And then what we did was we re-engineered that salmon in an isolated beverage. So we had salmon versus isolated nutrients.

56:11Dr. Gabrielle Lyon:Fascinating. And then, you know, I think I was underpowered, but we saw an effect size. It was trending that way that salmon potentiated the anabolic response more than eating the same macronutrients in free form. That's incredible. Right. Yeah. So I was like, well, it's probably something with this lipid dense food matrix. And this is more recent work I'm trying to understand. So this was in abstract form. This stuff is under review right now. So one of the things I was interested in was a lipid-rich meat matrix, right? So that's an interesting point in that, you know, when I was thinking about that, right, an egg and salmon, that was sort of really untouched, really.

56:56We didn't process it at all. I mean, it comes, right, ready to eat directly, right? But when we're thinking about even a dairy matrix or even a meat matrix, especially when it's ground, right, what do they do? They sort of, they ground up the meat and then they add in fat trimmings to try to make it more or less, you know, lipid rich or lean. But I was interested, okay, when we take a lipid dense food matrix or, yeah, lipid dense and protein dense food matrix in the form of ground meat, is that going to help the post-exercise anabolic response right versus a lean source of meat because our other work suggested that a lipid dense food matrix is really important to help potentiate a weight lifters myofibrillin protein synthetic response what we showed was that uh actually the lipid rich so that 80 percent meat ground meat so that's common right and there's 80 and then in terms of the 80-20 blend, if you will, that actually impaired the post-exercise muscle response compared to the lean source of meat.

58:08So iso-entrogenous, right? So in this case, eating a lipid-dense food matrix made up of ground meat immediately after the exercise bout impaired the anabolic response versus a lean matrix, which is an exact contrast to what we showed with the eggs and salmon. Oh, yeah.

58:27Dr. Gabrielle Lyon:So, but the same amount. Yeah. Everything was isonetrogenous, right? So there's something with that lipid dense food matrix in the form of a ground meat. And again, I think it's because we played around with that matrix, right? It's no longer, right? We manipulated that. Not, I mean, that's a ground meat matrix, right? In terms of its physical, I mean, that's how it comes. So interesting. It is interesting, but. Do you think it's, wait, I have to think about this. is this do you think it's because of the the actual grinding or do you think that it's because it was because that exists essentially in nature right if you well an egg and the salmon i mean we directly that was like i said unprocessed the meat was heavily processed right so luke has shown that um like i said mincing meat um processing yeah it is and it usually helps digestion yeah That's right.

59:18And Lucas showed that comparing minced meat versus a ground steak, right? So this comparison was an 80-20 blend of ground meat versus a lean piece of ground meat. Okay. So iso-nitrogenous and then a carbohydrate control. But the, so this was post-exercise and sort of goes in the face of what I just said, what I said earlier that after weightlifting, the kind of protein you eat, you know, the best kind of protein you eat is the kind you put in your mouth. But in this case, we saw it blunted the response, okay? And so this was showing me that, again, because sometimes people want to argue that, you know, I've had this before in the review process.

1:00:00Well, you already showed a lipid-dense food matrix works. But I was like, that's crazy. I mean, you've got to test different food matrices to truly understand it, right? And here's an example where a lipid-dense food matrix actually blunted the post-exercise anabolic response, right? And it's because, like I said, I think it depends on the extent of processing that's occurring. I think in this case, in one of the mechanisms behind this, when we look at the, unlike the salmon or the egg, this whole leucine trigger hypothesis, right? The salmon or the egg leucine trigger hypothesis didn't matter at all, right?

1:00:40Obviously, with the isolated food sources, you're going to get a bigger leucine spike. but yet we saw a bigger anabolic response in the the egg and the salmon conditions but in this case when we do the correlations between um the c max so the peak leucine concentrations in relation to the anabolic response there's a strong strong correlation right so the leucine trigger hypothesis mattered for this ground pork situation doesn't matter for so it depends on the food is my point So there's always this question of, I always get asked, how significant is the leucine trigger hypothesis? It depends. It depends on the food.

1:01:19It depends on who you are. It depends probably on how much muscle mass you got. So it depends. That's extraordinary.

1:01:26Dr. Gabrielle Lyon:We've never really talked about it in that kind of detail. It is fascinating. Do you have a hypothesis as to what it could be or why? I do, but maybe we'll save that for another podcast. Whoa, the cliffhanger. I can't give you all my tips and tricks. That is so fascinating. Yeah. Yeah. No, I thought it was interesting. I thought, well, because I'm always advocating. I've been around talking about the food matrix. And this was funny. In this case, with the ground pork matrix, I was wrong, right? And my students, I don't know if I mentioned it here on this podcast, but I have some students who are, you know, I'm pretty easygoing.

1:02:08So they just tell me what they feel. the other day they were like nick you've been wrong on your last three hypotheses and i'm just like yeah but it makes it fun right yeah i mean when you're um well one of the one of the things i was wrong about was that some of the vegan uh stuff because originally i thought an animal-based meal was going to be better on the anabolic response than a vegan-based meals right but in my defense i did design that study that was recently published in 2017 it just didn't get published till recently so sort of the environment changed a little bit from here or there but um yeah so i mean that's that's something you know i always think about and i wish there was these clean on and off switches but there's really not right um these precision nutrition notions especially with performance nutrition you can give these overarching sort of recommendations but it really depends.

1:03:02And that's sort of some of the concepts you were making. You know, as a practitioner, it's hard, right? Because each situation is going to be a little different recommendation. I think you just, it's, yeah, it's cool. We're getting more information on it. We'll figure it out.

1:03:15Dr. Gabrielle Lyon:Well, I'll be on standby as you continue to get the kinetics of all the food matrices. Yeah, there you go. And I'll be here for a while. Okay, yeah. But really, it really is extraordinary. And I think that your work, I'm really excited. I know that you're interested in a lot of the performance. I am fascinated to know over time, if you ever look at this, but the food matrix within OB skeletal muscle. Yeah, actually, you'll like this. Actually, yeah, we got, we just completed that study. We're writing that paper up now. So we, to your point, can we use the food matrix as a clinical tool to help overcome anabolic resistance?

1:03:51So take advantage, because, so I didn't really mention it, because it's sort of a byproduct, of the, in terms of the anabolic resistance or all the stuff we're talking about, some of the factors mechanistically, ultimately those are contributing to inflammation, right, chronic low-grade inflammation. So how can we manipulate a food matrix to take advantage or try to help modulate some of those mechanisms and help correct anabolic resistance? Yeah, so I didn't even mention that work. Yeah, we're, hopefully my students at home finishing up that manuscript now. So we did address that question recently.

1:04:31Dr. Gabrielle Lyon:Is that a cliffhanger? Better be another cliffhanger. I'm dying to know. I'm dying to know how we use certain foods to overcome that. It depends. Well, Dr. Nick Bird, thank you so much for coming on. Happy to be here. It's been fun. It's really eye-opening. And I think that you challenge a lot of scientific thinking and you challenge yourself. And I think it's really noble. Okay. I appreciate that. Yeah. Like I said, thank you for giving me the opportunity to talk to everyone. It's always fun. If this episode made you rethink what you thought you knew about obesity and protein, good. Because building muscle isn't about following trends.

1:05:14Dr. Gabrielle Lyon:It's about understanding your body's real needs and how they change with time, stress, and training. Whether you're optimizing for strength, body composition, longevity, or recovery, Dr. Bird's work shows that details matter. Timing, quality, distribution, vegan, non-vegan, and yes, even the way you pair your foods. If someone you love is doing all the things quote right and still not making progress, send them this episode. It might be the insight they've been missing. Thank you for being here. See you next time.

1:05:53We'll see you next time.

From the publisher

Muscle health isn’t just about how much protein you eat—it’s about how your body uses it. And for people with obesity or advancing age, that process can become less effective, even with optimal nutrition.

In this episode, I am joined by Dr. Nick Burd, one of the world’s leading researchers in muscle metabolism, to unpack the concept of anabolic resistance—when muscle doesn’t respond normally to protein and/or exercise. Together, we explore how aging, obesity and even the way foods are combined on your plate can impact muscle remodeling, recovery, and growth. Dr. Burd also shares why plant-based proteins often fall short, why protein efficiency matters more than quantity, and how endurance and resistance training affect nutrient use differently.

You’ll learn:

  • What anabolic resistance is—and why it matters
  • How to improve protein efficiency and muscle quality over time
  • Why food matrix, and timing can change your results
  • Key differences in nutrition strategies for endurance vs. strength athletes

Whether you're focused on longevity, performance, or helping someone break through a plateau, this episode delivers the research-backed information you’ve been looking for.

Who is Dr. Nick Burd?

Dr. Nick A. Burd is a muscle-metabolism scientist and professor at the University of Illinois at Urbana-Champaign, where he leads the Nutrition & Exercise Performance Research Group. Originally from the Midwest, he trained under renowned experts around the world before focusing his research on how protein and exercise influence muscle health across the lifespan. His work uses advanced tracer methods and muscle biopsies to explore optimal protein intake, plant vs. animal protein quality, and strategies to combat anabolic resistance.

This episode is brought to you by:


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