5 Protein Myths Your Doctor Is Still Repeating In The Exam Room

0:00Gabrielle Lyon:The words high protein on a label sells product. That doesn't mean they don't have to have anything, but there is no meaningful enforcement standard for what the front of the package is allowed to promise you. Essentially, they sell you a protein, but it's a low quality protein and frankly does nothing for your muscle. So I want to draw a hard line around who this applies to. You're going to know and understand the per meal protein amount with turning on muscle protein synthesis. You're gonna be able to look at the back of any product, the front of any package, and know whether in about five seconds, whether it's going to do anything for your body in that dose.

0:43Gabrielle Lyon:Five protein myths that are still repeated in exam rooms. Myth number one, do not eat too much protein. It will wreck your kidneys. Let's look at what the evidence says.

1:02Gabrielle Lyon:Why most high-protein products are failing you. Now, there's a good chance that everything you ate today with the words, quote, high-protein on the front of the package did almost nothing for your skeletal muscle. And I swear, I'm seeing proteinification everywhere of so many different food products, many of which are crackers, low-quality foods. And at the end of the day, I think the food industry figured something out about a decade ago. The words high protein on a label sells product. That doesn't mean they don't have to have anything, but there is no meaningful enforcement standard for what the front of the package is allowed to promise you.

1:44Gabrielle Lyon:So what does that mean? It means that the back of the package, a company can put six to eight grams of low quality protein when you pick up that label and it's incomplete protein. into, say, a bar printed high protein across the wrapper. Essentially, they sell you a protein, but it's a low-quality protein and, frankly, does nothing for your muscle. Meanwhile, the research points towards a per-meal threshold that most of these products don't come close to touching. What does that mean? That means the amount of protein per meal. Here is what you're going to walk away today with. You're going to know and understand the per meal protein amount that the literature associates with turning on muscle protein synthesis.

2:32Gabrielle Lyon:Come on, Jim bros, stay with me. Ladies, you're not going to get bulky. Basically, you're going to be able to look at the back of any product, the front of any package, and know whether in about five seconds, whether it's going to do anything for your body in that dose. And you are going to know what a day of eating that genuinely builds and preserves muscle looks like. I'm going to be specific in grams and times and we are going to have a party. But before I give you the number, I have to clear five things out of the way. There are five protein myths that are still repeated in exam rooms, still printed in patient education handouts, I know because I have them, and still taught in medical school training.

3:18Gabrielle Lyon:They're rough. And I want to be clear about something, first of all. The physicians repeating these are not careless, and they are not acting in bad faith. They are working from guidance that was, in some cases, set before most of the relevant research existed. The information is old, and frankly, we are still trying to catch up. Myth number one, please die. My favorite myth, high protein destroys your kidneys. I guarantee if you are watching this video that you've heard this, and you've probably heard this more than once. You have heard, do not eat too much protein, it will wreck your kidneys.

3:56Gabrielle Lyon:False. Let's look at what the evidence says. A systematic review and a meta-analysis published in the Journal of Nutrition in 2018 pulled roughly 28 randomized control trials covering roughly 1 ,400 participants. It compared higher protein intakes against normal or lower protein intakes and looked at what happened to kidney function. The finding was that when you compare the change in glomerular filtration rate between groups, dietary protein had no effect. So now, why does your GFR run a little higher, which is your glomerular filtration rate, say that five times fast? Well, it does, and that shows up in the data.

4:40Gabrielle Lyon:But the interpretation the authors landed on, and the interpretation I find most defensible, is that it represents a normal adaptation within a functional kidney. It is a healthy kidney. So your kidney essentially is a filtration organ, and if you give it more substrate to filter, it filters more. That means the higher the protein, it improves your ability to filter. This is not an organ failing. So I want to draw a hard line around who this applies to. If you already have chronic kidney disease, particularly if your filtration rate is under 30, for example, obviously check with your physician.

5:23Gabrielle Lyon:this is an entirely different conversation. Protein restriction may be appropriate. You have to make that decision with your physician. And there's nothing that I can say in this episode to override that, nor should it. But for a healthy adult with normal kidney function, the evidence does not support the fear that has been lingering around for the last 20 years. This myth is definitely on its way out. Myth number two, that the current RDA, which is 0.8 grams per kilogram, is enough protein. The recommended dietary allowance for protein has been 0.8 grams per kilogram of body weight per day for the last bazillion years.

6:06Gabrielle Lyon:And seriously, most clinicians treat that number as if this is a standard of care. It is not, friends, and it is the bare minimum to prevent deficiencies. And I do not see that getting communicated. And that figure was established, like I mentioned, as a minimum required to prevent frank protein deficiencies in the large majority of a healthy population. It was derived substantially from short-term nitrogen balance. Now, I will give$50 whoever can tell me what nitrogen balance determines in health outcomes. The Jeopardy song should be playing. Nobody, because we don't have a health outcome based on nitrogen balance.

6:52Gabrielle Lyon:As of January, 2026, federal guidance changed some of these protein recommendations. The 2025 to 2030 dietary guidelines for Americans raised the protein target to 1.2 to 1.6 grams per kg. Now, that is a substantial move off of the RDA. This is the first time federal guidance has recommended more protein as a working number. Now, I'm going to tell you where I sit clinically, and actually, it lands above where the guidelines are. For adults who are training or who are aging or who are dieting or who are on a GLP-1, whoa, my position is 0.7 to one gram per pound of target body weight. And I also want to be clear that multiple expert bodies have argued in the same direction.

7:48Groups like the Pro-Age Working Group, they've both recommended intakes well above the RDA for older adults and the clinical population. But here is where I would tell you, the evidence supports roughly 1.2 up to 1.6. Beyond that, well, this is a personal choice and there may not be additional benefit, but we'll talk about that on another video. But I will tell you, when your physician says to you, you're getting plenty of protein, what they most likely mean is that you are above the deficiency threshold. Not being deficient and being optimized are two entirely different outcomes and they are different states.

8:31And I would like for us to stop confusing them. Myth number three, protein causes bone loss. This one comes out of the acid ash hypothesis. I remember when I first started my practice and I moved into New York City where they were doing the acid-based diet. Yeah, it was super weird. And the reasoning went like this. Protein generates acid load. The body has to buffer that acid. Bone releases calcium due to that buffering. Therefore, high protein means demineralized bone. I guess it makes sense somewhat elegantly, but it doesn't appear to hold up. And when researchers went looking for the evidence that dietary acid load drives bone loss, they did not find that.

9:15Gabrielle Lyon:And I will also tell you that when I was studying geriatrics, those with the higher protein intake had better bone density. And the work that has looked directly at protein intake and bone have generally pointed that the higher the protein intake above the RDA was not adversely related to affect bone. So what does that mean? That means that protein does not negatively impact bone. Also, side note, let's just think about what bone is. Roughly half of bone volume is protein matrix, collagen and mineral and protein. You cannot mineralize a scaffold that you have never built. And one more thing, there's a mechanical argument here that can't be ignored.

10:03Gabrielle Lyon:Bone responds to load. Load comes from muscle pulling on bone. If protein intake and resistance training are what preserve the muscle that loads the skeleton, then under eating protein in the name of bone health is a, I don't know, what do they call it? Like an oxymoron, a strategy that works against itself. Protein is not a threat to your skeleton. Myth number four, high protein on the label means something. Now here is what I want to leave you with. The literature points towards a per meal threshold of around and just listen, I talk about amino acids. This is one reason why I talk about perfect aminos all the time, because the literature points to two and a half to three grams of leucine at a meal, which is approximately 10 grams of essential amino acids.

10:52Gabrielle Lyon:That is required to meaningfully stimulate muscle protein synthesis in a single setting. What does this mean? This means that leucine is the signal. The other essential amino acids that are in perfect amino, which they are all the essential amino acids, you need both, the branch chains and the essential amino acids. A signal with no building blocks, no substrates, that's a signal that never happens. So think about it like this. You put a key into an ignition. You turn the car. The ignition starts rolling over and that's the leucine, but you don't have the rest of the amino acids. So what that means is below the threshold of protein of that amino acid, say leucine, you're not turning on the machinery to build and maintain muscle.

11:46I know that was a lot, but you got this. So hold that number in your head and we're going to walk through a sitting.

11:52Gabrielle Lyon:Well, you're not going to be sitting in your pantry, but you know what I mean. Let's say I go into your pantry and I open it up. There is a protein boosted breakfast cereal. Typically, it has six to 10 grams per serving, much of it from grain-based protein, which is essentially wheat. It is limited in lysine and low in leucine. It is not going to get you there from muscle health. Category two, the protein bar in the checkout aisle. Man, they're getting robust. There's often 10 to 12 grams of protein frequently blended with collagen or a cheaper plant isolate to bring the cost down. And depending on how you blend it, you are looking at under two grams of leucine.

12:36Gabrielle Lyon:Finally, my favorite category. I will be honest. I use collagen myself, but not for protein. Category 3 collagen. This has a protein score of zero. And I'm not telling you to throw out your collagen, but it is an incomplete protein. It contains essentially no tryptophan, and it is low in leucine. 20 grams of collagen on the back of a label is still essentially zero. And by the way, it reads identical to 20 grams of whey, but they have completely different effects. Finally, category four. Now, I love a protein coffee, but it's really important to understand that I also might like a protein cookie and a chip and water.

13:21But the reality is there's really only about five to 12 grams of protein in these items. There's always exceptions. But the reality is if you want to go ahead and eat your protein cookie or your protein cereal, you can, but I would recommend if you want to increase that protein nutrition and that protein density, that you have it with a scoop of perfect amino

13:45Gabrielle Lyon:or essential amino acids to bring up that protein. So the first thing that I want you to do is find the grams per serving, then ask what the protein source is. If it's under 25 grams to 30 grounds of a complete high quality protein source, you're technically not eating a protein meal. You're eating a snack with a marketing claim on it. And again, this is not a failure of discipline. This is a labeling environment that is quite confusing. And now I'm going to leave you with my fifth and final myth. Only your daily total protein matters. Does it matter? it probably matters the most, but people are already hearing about total protein.

14:31Gabrielle Lyon:And when we think about protein, we have to understand that protein is made in a series of protein decisions. It is how old you are, how much activity you have, what your food preferences are, and what your overall body composition goals are. A protein decision is not one thing. Here is how one should go through thinking about how much protein. Number one, 0.7 to one gram per pound of target body weight. Number two, the more sedentary you are, the more protein you need. Protein has a U-shaped curve. If you are very athletic, then typically you can get away with just a little bit less. How old are you?

15:18If you are done growing, if you are over the age of 35, you probably need a little more protein. If, friends, you are over the age of 65,

15:27Gabrielle Lyon:protein should be your first and most important macronutrient. I've shared with you a ton of myths and hopefully a ton of truths. Now I've covered a lot of territory here. We've run through five separate myths and five truths, but the most important thing that I want you to do is I want you to implement it into your daily life. That means go out, prioritize your protein, hit some weights, don't be distracted by proteinification of the world, and lastly, stay forever strong.