In short
Podcast Summary: The Dr. Gabrielle Lyon Show
Episode
Hormone Replacement Therapy Decoded: Why the FDA Removed the Blackbox Warning on HRT
Overview This episode of "The Dr. Gabrielle Lyon Show" discusses the recent removal of the blackbox warning by the FDA on Hormone Replacement Therapy (HRT) for menopause. Dr. Gabrielle Lyon and her guest, Dr. Nick Berninger, delve into the implications of this change, the importance of testosterone in both women and men, and the broader context of hormone health.
Key Points
FDA's Removal of Blackbox Warning
- Significance: The removal marks a critical shift in the landscape of women's health, encouraging the use of HRT which had seen a decline in prescriptions since the original warning in 2003.
- Historical Context: The original warning was based on findings from the Women's Health Initiative, which raised concerns about breast cancer and heart disease risks linked to HRT.
Definitions and Concepts
- Virilization: Development of male characteristics due to exposure to androgens (e.g., testosterone).
- Androgens: Steroid hormones like testosterone that affect both men and women and are crucial for various bodily functions.
- Liquid Chromatography: A testing method used to measure hormone levels accurately.
Hormones and Health
- Estrogen and Testosterone: Both hormones play vital roles in overall health, brain function, and longevity.
- Risks and Benefits of HRT:
- Benefits: HRT is associated with reduced risks of all-cause mortality, heart attacks, cognitive decline, and Alzheimer’s disease.
- Risks: Certain individuals (e.g., those with active breast cancer or undiagnosed bleeding) should avoid HRT.
Testosterone in Women
- Understanding Testosterone: Often overlooked in women’s health, testosterone is crucial for maintaining muscle mass, sexual health, and overall vitality.
- Dosing and Administration:
- Testosterone can be administered via various methods (injections, creams) with different impacts on the body.
- The episode addresses concerns like virilization and how to mitigate these effects through proper dosing.
Clinical Insights
- The discussion includes a detailed review of laboratory values for testosterone in both men and women, emphasizing the importance of accurate testing and monitoring.
- Dr. Lyon shares a case study illustrating the transformative effects of testosterone therapy on a 60-year-old woman’s health, highlighting improvements in muscle mass, energy levels, and overall well-being.
Research and Future Directions
- Ongoing research aims to establish clearer guidelines on testosterone usage in women, as well as to advocate for its recognition and acceptance in mainstream medicine.
- The potential for FDA-approved testosterone therapies for women in the future is discussed.
Conclusion The episode emphasizes the importance of informed discussions about hormone health, advocating for a balanced perspective on HRT and testosterone therapy. The removal of the blackbox warning by the FDA could pave the way for increased acceptance and use of HRT, highlighting the need for women to be empowered and educated about their health choices.
Call to Action For listeners interested in furthering their knowledge in health and wellness, Dr. Lyon encourages them to explore her upcoming book, "The Forever Strong Playbook," and to engage with the content on her social media platforms.
Written by AI. May contain mistakes. Listen to the episode to check what was said.
Transcript
Automatic transcript. May contain errors.0:00The FDA just removed the black box warning on HRT for menopause. Who should not go on hormone replacement therapy? Active breast cancer or active cancer if someone has not worked up vaginal bleeding and stroke. Benefits of hormone replacement therapy include a reduced risk of all-cause mortality, fractures. HRT has also been associated with a 50 % reduction in heart attack risk, 64 % reduction in cognitive decline, 34 % lower risk of Alzheimer's. We think about testosterone and we think about muscle mass, but there are testosterone receptors all over the body. There are estrogen receptors all over the body.
0:43It's not just, oh my gosh, I'm going to give you testosterone and then you're going to grow a beard and muscles. It's not going to happen. We think about testosterone replacement therapy for men. Nobody blinks an eye. Women aren't even thinking about that. Similarly, just how men aren't even thinking about estrogen, which is equally important for men and women. Wow.
1:07What's up, friends? I'm Dr. Gabrielle Lyon. And before we jump into this episode, I want to put together a handful of definitions so that we are all on the same page. And the first definition that you are going to hear is called virilization. And this is the development of male characteristics by being exposed to an androgen, an androgen-like testosterone. They include the following, deepening in the voice, coarse hair on your body, increase in clitoris, increase in muscle mass, and that is called virulization. The second definition that you might hear is something called hematocrit, and this is a simple blood test and it refers to the oxygen carrying capacity in the blood.
1:50The higher your hematocrit, the more oxygen that you carry. The third definition that I think is important is something called an androgen. And an androgen is a steroid hormone. And this is typically related to the development and maintenance of male sex characteristics, but it's present in both men and women. And finally, something called liquid chromatography. And this is a way or a chemical technique that allows us to identify certain compounds in the body like testosterone. You've heard me say before, muscle is the organ of longevity. Now I'm putting the playbook in your hands. My new book, The Forever Strong Playbook is your roadmap to building real strength, not just in your body, but in your health, your energy, your life.
2:38This isn't theory. Inside, you'll find the exact workouts, protein forward recipes, recovery strategies, and mindset tools I use with my patients and live by myself. This book is for anyone and everybody who wants to age powerfully, stay vibrant for their family and show up strong every single day. When you pre-order, you're not just getting a book, you're joining a movement. The link's in the show notes and I cannot wait for you to dive in. We have some really important stuff that we have to cover. Yes. The FDA just removed the black box warning on HRT for - I saw that. I know, for menopause.
3:19And why is this important? This is important because for the last, since 2003 or so, women have stopped using hormone replacement therapy for risk of breast cancer, cancers, heart disease, stroke, and it's really changed the landscape of health and wellness for women. And we're now entering a new landscape. Is that because of your advocacy? No, but what I think has really happened is that up until 2003, women were prescribed hormones. These hormones include estrogen, progesterone, and testosterone. So testosterone replacement therapy has been around for, I don't know, 80 years, very effectively.
3:59And then all of a sudden, the Women's Health Initiative came out and that changed the trajectory and people became afraid both of the hormones and also prescribing. But again, now we get a review what the science says, what are the logistics, should women take testosterone? You were asking me, will women grow a beard? That's what I want to know. Will they grow a beard? That's what my wife would want to know. Be like, am I going to grow a beard? No. And, you know, if you look at the normal laboratory values of total testosterone in women, it is dependent on age and menopausal status. Also the type of testing used, depending on the assay used, depending on the lab, you might get a higher number or a lower number.
4:43And the gold standard is liquid chromatography. Okay. Just thought I'd throw that out. So if you're getting... Is that specific, like, so should that be something when you go to your physician? Yes, it should. You request. Okay. Yes, it should. Liquid chromatography. That's right. And you should at least find out, is it liquid chromatography mass spec. But let's talk about the ranges. Total testosterone ranges. So there's total testosterone and then there is free testosterone. I suppose before we talk about testosterone, we talk about androgens. And androgens, you know, they're also precursors for estrogens.
5:19Estrone, estradiol, and estriol, E3 in pregnancy. But the primary, most well-known androgen of them all is... testosterone. That's right. Which can aromatize into estradiol in both men and women. Well, it just seems like men get, would you say, overly worried about that? Totally. Okay. And we test, in our clinic, we do test for estrogen levels in men. And men, estrogen is actually, you know what we should do? We should also do an episode on estrogen in men. Yes. Why not? Why don't we just balance the playing field? That's true. Yeah. Yeah. Just reverse. We're going to talk about testosterone in women and estrogen in men.
5:55I actually really like this. What level of estrogen do we find effective and valuable for men? And that is really between 30 and 50. So if you go and you look, typically you will see a range between 30 and 50. If estrogen is too high in men, in clinical practice, I have seen that they don't like the way they feel. And they might, and again, this is subjective reports of increasing in mood, like lability. Maybe they're feeling more emotional or their mood is a bit depressed. And low estrogen seems to kill sex drive in men. So if they're on an aromatase inhibitor, say, for example, they go to their doctor and they're getting too high a dose of testosterone.
6:40Say they are taking 300 milligrams of testosterone a week. And some of that testosterone gets converted to estrogen. So the guys, a lot of the bodybuilders, they think, oh, well, more is better. More is not always better because it aromatizes to estrogen. and you don't want really high estrogen levels in men. Conversely, you don't want low estrogen levels in men because that can affect bone density. They can get low bone density, just like women with low estrogen. They also can have low sex drive, just like women. Yeah, just let's make sure everybody's hearing that right. Low estrogen. If men get their levels too low, it can suppress their sex drive, bone density, all those sort of issues.
7:19So guys taking things that suppress their estrogen kind of willy-nilly or in lieu of getting on TRT could be a bad idea. Yes. And typically we don't recommend aromatase inhibitors, things like an astrozole. And we don't recommend them in high doses. So for example, if someone is getting peripheral conversion, so from their fat cells, they are now converting testosterone to estrogen, but we will give them an aromatase inhibitor at a very low dose to keep that estrogen in check. But it's not... The first thing that we're going to do is we're going to try to address their dosing of testosterone first because if their testosterone is too high and they aromatize it too much to estrogen, then we have a problem.
8:05Conversely, let's just think about the normal laboratory values because you want to know. You want to know when your wife goes, hey, Catherine, to the doctor and she gets her lab values back and she sees that her total testosterone premenopausal her number should be again this is what the ranges are should be um 0.3 to 1.6 uh nanomoles per liter or again i don't want to totally over complicate 8.7 to 46 nanograms per deciliter and you want to make sure that you're comparing apples to apples so we're going to talk about both the ranges in men and women with using the same values. Most laboratories will report nanomoles per liter and that's by liquid chromatography and in tandem this mass spec.
8:59Postmenopausal their total testosterone, this is untreated, is 0.2 to 1 nanomoles per liter. Which let's take a pause, that's not that big of a difference right now because it was it was what 0.3 to 1.6 yep and then postmenopausal their total testosterone is one yeah okay what this tells me is that the premenopausal postmenopausal testosterone numbers don't change and now this is the reference range do i believe that this is an ideal number i don't and let's talk about free testosterone so free testosterone is the bioavailable form. And hormones are like children. They can't go anywhere alone.
9:40And typically, they're bound to things. Sex hormone binding globulin. But the free testosterone is what it would be considered the most biologically and bioavailable. So a premenopausal free testosterone level would be 5.2 to 26 picomoles per liter or 1.5 to 7.5 nanograms per deciliter. Postmenopausal women, free testosterone is roughly half. And that's 2.5 to 13 picomoles per liter or 0.7 to 3.8 nanograms per deciliter. How do we make sense of this? And why should a woman consider testosterone? And number one, is it safe? I would argue that it is safe. When would we be concerned about testosterone?
10:27Really, there's two reasons why. And then we'll kind of then double back to all of hormone replacement therapy. What would be a red flag as to who should not start hormone replacement therapy? But testosterone alone is what I would consider from my professional opinion. Again, I'm not giving anyone medical advice. Please see the disclaimer. But this is for educational purposes. Thank you to Manicora for sponsoring today's episode. Winter means more time indoors, more travel, and if you have kids, a new bug, cough, or sneeze every other day. I like keeping my routine simple and Manokura has become something I reach for almost every morning.
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12:48So for example, we think about testosterone and we think about muscle mass, but there are testosterone receptors all over the body. There are estrogen receptors all over the body. It's not just, oh my gosh, I'm going to give you testosterone and then you're going to grow a beard and muscles. It's not going to happen. So there's no concern. That would be like a much higher dose, right? will you start seeing those? The biggest concern is virilization. If we dose testosterone, which is very, it is highly androgenic, meaning testosterone is androgenic, meaning it will affect, it can affect virilization, hair growth, clitoral enlargement at higher doses versus, and we're not going to talk about this in too much detail, other anabolic agents like nandrolone which is an anabolic steroid, which is FDA approved for anemia of chronic disease.
13:42It's used in osteoporosis. This agent is highly anabolic versus androgenic. And I think that that becomes important. Again, we're talking about this overview of hormone replacement in females. Underneath hormone replacement, we've got estrogen, progesterone, testosterone. This is what the body would make, right? So this is over in one category. And then we have muscle building and anabolic agents in the other corner. And these agents are things like Nandrolone and Oxandrolone. Oxandrolone, also known as Anavar, which is not typically used anymore, but was used back in the day. You and I talked about this for burn victims and maintaining lean mass and muscle.
14:28Anavar or Oxandrolone is an oral agent. So again, it was, I don't want to say taken off the market because places still make it, but it isn't used so much in a practicing physician environment because of the increase in liver enzymes, which it does seem to increase liver enzymes versus say a nandrolone seems to have a better safety profile and nandrolone is an anabolic agent or anabolic steroid, which people are, they hear it and then they get very upset. But again, anabolic steroids or androgens, androgen derivatives, there's a place for them in clinical use. So when we think about the normal laboratory values for men, and I think that this is best used when we think about age reference range, for a healthy, non-obese male, age 19 to 39 years old, typically the total testosterone is, and again, these numbers are funny, 264 to 916 nanograms per deciliter.
15:35Wow. And this is, yeah. That's a big, that's a big, yeah, a lot of variability. Yeah, but also what, 264. And on the low end, by the way, the low end, if you are considered low testosterone, it's dependent on geography. And it's also dependent on what organization you're looking at, which is fascinating. So the low number of testosterone might be different in Italy. What they would consider as a cutoff is low. So it's geography dependent, which signals to me that it's not a hard and fast biological number, but there's a level of interpretation. Then, so for free testosterone, the most robust recent data that we have using mass spec or liquid chromatography, the reference range is 184 to 749 picomoles per liter for healthy non-obese men age 19 to 39.
16:29And that's a free testosterone number. And technically, there's data to suggest that free testosterone declines with age and increasing BMI, which makes sense because you then are aromatizing. And BMI is the wrong way to look at it, so body mass index. But body fat percentage that can decrease testosterone. Okay let's talk about some of the risks. Who should not go on hormone replacement therapy? First of all this is all context dependent. You work with your provider. It is a personal decision. Here is what is typically recommended as red flags. Active breast cancer or active cancers. Undiagnosed, unworked up if someone has not worked up vaginal bleeding and stroke.
17:20Those are the things where you would give you pause and it's not that many. Active cancer, undiagnosed bleeding, why are you having some kind of vaginal bleeding and recent stroke. Wow, I mean that's pretty straightforward. And then when you look at why there are benefits. So now switching back, so we kind of covered this idea of testosterone and androgens. Androgens are a precursor for estrogens in women's bodies. The most well-known androgen that we talk about all the time is testosterone, which aromatizes to estradiol. And then there are less important androgens. And when I say less important, perhaps things that we don't always test for, although we do in our clinic, DHEA, and you pulled a paper that we're going to talk about.
18:07And androgens are directly secreted by the ovaries and adrenal glands in women. Let's talk about menopause treatment and the benefits of that. And this is really, from my understanding, why they removed this black box warning. When the FDA puts a black box warning on something, it really makes people pause and it limits the use of these medications and it scares people. And for a reason, a black box warning is a, it's a major problem, major risk. The reason the black box warning for hormone replacement therapy happened was from the Women's Health Initiative. It's an outrage for many years, and it's gotten more and more pronounced, which is why they re-evaluated the data and took the black box warning off.
18:51And the following has found to be important, and these are the benefits of menopause treatment. And ideally, right before you're going to menopause so around this transition is the best time a woman could always be treated but again her risk of heart disease as estrogen declines her risk of heart disease goes up her risk of alzheimer's disease again alzheimer's two-thirds are in women and of course there are changes in lipids that happen and osteoporosis so benefits of hormone replacement therapy include reduced risk of all-cause mortality, fractures. HRT has also been associated with a 50 % reduction in heart attack risk.
19:37Wow. Sign me up. 64 % reduction in cognitive decline, 34 % lower risk of Alzheimer's. This episode is brought to you by Body Health. Something changes in your mid-30s that no one talks about, and it's called anabolic resistance. Your muscles become less responsive to the signals from protein that trigger growth and repair. This can make hitting your body composition tough. This is why beefing up your protein intake at each meal becomes important. Often why I say hit 30 grams of protein. Now, not everyone wants to eat all of that in a meal. This is where strategic supplementation becomes important.
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21:00You can check out Body Health's Perfect Amino using the link in the description. And if you'd like to try it, you can use the code LION20 for 20 % off your first order. Do you think that reduction in Alzheimer's since that's the type three diabetes is because if I understand correctly, it reduces the risk of metabolic syndrome or the incident of metabolic syndrome? I think it's a great point. I think it's twofold. Again, this is just my professional opinion. There are estrogen receptors in the brain. Estrogen, I think the longer the span of lower estrogen, the greater the risk of cognitive dysfunction.
21:35And I do think that there is a relationship between insulin resistance in the brain and estrogen. I don't know the exact mechanism. And I also think that when women indirectly are on hormone replacement therapy, they're more likely to be training and exercising. And so they're having a lower insulin resistance peripherally, which then I think can account for a lower risk of Alzheimer's. Again, correlation is not causation, but I do believe, again, I train in geriatrics. And during the time that I was in training, so I finished my geriatric fellowship in 2015 from 2013 to 2015, right around that time, they were exploring intranasal insulin use to lower insulin resistance in the brain.
22:22It didn't pan out. It's not a treatment for Alzheimer's, but one of the things that they had not been exploring at the time, which they have now begun to look at more so frequently is estrogen use in the brain. So it's not just insulin resistance because if you would then give insulin, you would think that there would be a reversal or a pause or some kind of treatment. So that doesn't happen. And it's probably the synergistic effect. What about hysterectomies? You know, you're talking about all these issues and I'm thinking about those poor women that have those early on. So I imagine that puts them at greater risk for Alzheimer's and all those diseases you mentioned.
22:58And think about all the women that weren't treated. When you get, there's a hysterectomy, there's a total hysterectomy, and then there's a hysterectomy where you just take the uterus and leave the ovaries. And hopefully most women, again, it just depends on what the diagnosis is, that if they still keep the ovaries, they're still producing hormones. But if you do a total hysterectomy, and we've had many patients like this, we put them on hormone replacement, which is the full spectrum. You know, right now, the conversation really is estrogen and progesterone. women I think are still really afraid of using testosterone and I can appreciate as to why but testosterone in women is really important and it's important for a number of reasons we should pull up a few of the studies so there was one study let's let's pull up that that study on younger women because again women think okay well testosterone it's just after I go through post-menopause, my post-menopausal experience.
23:58But if we look at the values of pre-menopausal total testosterone and post-menopausal women, it's not that different. But free testosterone does seem to be the biggest change. And then looking at what is some of the data on testosterone use and women, let's look at some of the studies. And there was one in particular that I really liked looking at younger women and the use of testosterone administration. So this is a randomized control trial. This is the effects of moderately increased testosterone concentration on physical performance in young women. A double-blind randomized placebo-control trial and this was in the British Journal of Sports Med 2020.
24:45And so what this was is this was a double-blinded, meaning both parties didn't know what they were getting, randomized placebo-controlled trial. it was 48 healthy physically active women age 18 to 35 wow 18 i know 10 weeks of treatment and again that's a short treatment course 10 weeks of treatment because we don't think about cycling testosterone like someone would think about cycling an anabolic 10 week of treatment with 10 milligrams of testosterone cream daily or a placebo everybody completed the the study which is unusual. And the primary outcome measures, what did they look at? They looked at anaerobic performance, so the wind gate test.
25:24I've actually never done one of those. Oh, you're not missing anything. I have. The only time I've ever seen your face like that is when we're talking about rucking. 10 milligrams of testosterone cream daily. Primary outcomes were aerobic performance measured by time to exhaustion. And then the secondary outcome was anaerobic performance, wingate and muscle strength, squat jump. And it looks like they did a knee extension and a counter movement jump, which I don't know what that, do you know what that looks like? Yes. You, you jump down and you jump up and you can either reach up and like hit something up high.
25:59And that's how they measure the vertical. Or there's a pad that'll measure your time in the air and it'll calculate it from that. Mine would be zero. You got a vertical, you got, you got hops. Are you kidding? Come on. And then they looked at hormone levels and body composition by DEXA was addressed. And here were the ranges. So this is 10 milligrams a day, which, you know, I remember when I started 10 years ago and we were prescribing testosterone cream, we were so concerned. Again, this was during this wave of the Women's Health Initiative where we couldn't find a lot of providers that were prescribing.
26:34And we would start with 0.5 milligrams of testosterone. Did that do anything? No. Okay. Yeah. All right. But we were so concerned with increasing. And then I remember when we got to 2.5 milligrams, we were so worried. I was like, whoa. We were really worried. Again, this is all topical, a topical delivery system. And right now I would say it depends on the provider, but maybe on average it's five milligrams a day. Five is absolutely reasonable. It might not even be enough because it depends on skin absorption. five milligrams a day of some kind of testosterone cream. And this was 10 milligrams of testosterone cream daily.
27:13And what they found was the serum testosterone increased from 0.9 nanomoles per liter to 4.3. So it went from 0.9 to 4.3 in the testosterone supplement group. In the running time to exhaustion, this increase saw a correlation of testosterone increase, but they found that it also increased their time to exhaustion by 21 seconds. That's significant. That's a lot. That's a lot. It came out to 8.5%, which doesn't sound like a lot, but can you imagine being able to push 21 more seconds? Especially if you're chasing your kid. Yeah. Seriously. And this is in testosterone group compared with the placebo and the Wingate average power, which increased by 15.2 watts in the testosterone group versus 3.2 watts yeah if so this is performance 15.2 watts i i mean i'm assuming that that is that significant huh i mean yeah yeah i mean if you look at performance if you were an athlete that could be the difference between being on a podium and not and you know and then for daily life that that's also again being able to keep up with your kid or not keep up with your kid yeah and and also to be clear maybe it's not significantly different between the two groups so if the windgate average power was increased by 15.2 watts in the testosterone group compared with 3.2 watts in the placebo group maybe that's not significantly different because it looks like this is a low p-value but like you said if it's chasing a kid or some performance it also says there was no significant change in the counter movement jump which would make sense right is that a that seems like that's a a skill that you would yeah a little bit lower body power coordination yeah and then squat jump and then surprisingly there wasn't a change and also knee extension there was no change what i'm wondering and again i don't have the the lab values here what i'm reading from this paper again that there was an improvement in the aerobic capacity that seemed to be helpful this running time to exhaustion.
29:24But the other thing was the total lean mass for the change in baseline. Again, and I think that this is what has pushed people to not take testosterone and the total lean mass, this is not skeletal muscle, this is all mass. These are all organ systems was 923 grams for testosterone group and 135 grams for the placebo group. And the mean change in lean mass in the lower legs was roughly 400 versus 100. So four times increase in, again, that's not a huge amount, 398 grams, but I do think that this highlights that there is an effect of testosterone in increasing the aerobic capacity as well as lean mass in young, physically active women.
30:15Now, If we take a pause, what this highlights is really an effect on body composition. Those are higher doses than we typically see in clinical practice. It seems to also improve lean mass. Again, I'm not saying that anyone needs to take this, but looking at some of the data, it's nice to see young, healthy people as well. Because I think a lot of when we think about a lot of the medications and hormone replacements are typically an older or unhealthy or pre-diabetic type people, it's nice to know, do healthy people benefit as well as less healthy people? Thank you to Bond Charge for sponsoring this episode of the show.
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30:59And if you've been following me for a while, you know that I take light exposure seriously. Why? Because it impacts your sleep, your hormones, your mood, your ability to recover and focus. It doesn't just affect you, but it also affects your kids. And that's why I use Bond Charge. They've created science-backed tools that help balance our modern industrialized lives from harsh indoor lighting to too much screen time. Their blue light blocking glasses are a nightly ritual for me and my kids borrow mine. They help calm my nervous system, protect my circadian rhythm, especially if I just happen to look at my screen, which we all know that never happens.
31:38I also love their red light lamp. I turn them on as soon as it gets dark and I use the big panels, 10 to 20 minutes each day. They are some of the best red light products I have ever used, low EMF on the market. And right now, Bond Charge is having their holiday sale. So you can save a massive 25 % off. Just head to bondcharge.com and your 25 % off code will automatically be added to your order. The sale will end on the 31st of December, 2025. So hurry and don't miss this chance to save on your favorite bond charge products. Right. This is true optimization. This isn't treating a disease state or anything like that.
32:20This is optimizing this, this group of women. And what I was looking at and see was, you know, they weren't on a, uh, a training protocol as part of this study that I can see. And so you're talking about by just giving you this cream I'm improving your run to exhaustion, which I imagine probably the effect of testosterone on the red blood cells, maybe the iron, you know, the oxygen carry capacity, but still like all those metrics moved. And I would be curious to see if they had them both on training protocols, what it could be more pronounced even with the testosterone. Basically, this paper was a randomized control trial in young, healthy women to show the short term testosterone administration.
33:05led to significant increase in total lean mass. And they increase when they say significant increase in total lean mass, 1.9%. And leg lean mass by 2.4 % with type 2 muscle fiber hypertrophy and increase in capillarization. What does this mean? Fiber types change as we age, type 1, type 2, and obviously there's type 2A and these combo fibers. But really for simplicity sake, we have type 1 fibers, which are the long endurance type fibers, which also there is a preferential transition to type 1 fibers as we age. And this is, I was going to make a joke about my dad because he does listen to the podcast, but he's got some type 2 fibers, but we see they become more frail and thin.
33:51And then type 2 fibers, this is what we think about hypertrophy. And there was a preferential improvement in these type two muscle fibers and then increase blood flow and so that's really good for the the young people and then like you talk about that fiber type shift i mean that that's part of the the reasoning or the logic i've always heard of why if you look at like sprinters or you know power sports once you get past the age of 30 35 you usually don't see athletes in that whereas like long distance running you can have people in their 40s going into it yeah because because endurance seems to to kind of stay with those athletes longer than say you know like a Usain Bolt versus uh the Kipchoge would be the best example he just did the New York marathon I mean I think he finished you know at 40 in his 40s top he was a top 20 like you know ran like a 228 something you know some crazy and still and I remember seeing his time I know I remember seeing his time and be like yeah and that that doesn't even get you in the top 10 or top five but he was still able to compete at a high level versus for sprinters i don't know of any sprinter like past the age or males at least past the age of like 35 who are still i actually i hadn't thought about that on yeah when did he stop when did justin gatlin stop sprinting i i don't know how old he was but that's it's a really good point what i thought was also interesting is you know when we're looking at all this data that the randomized control trials showed increase in leg lean mass with a preferential increase in type two muscle fibers, which by the way, friends who are listening to this, you can improve your type two muscle fibers by getting on a great resistance training program.
35:26This could be three days a week. I put that in my book, the new book, which you have over here, Forever Strong Playbook. Love it, great book. Three days a week of doing resistance training. It could be full body. And we put the rep range in anywhere from six to 15, which is a wide rep range, but the whole idea is that you're going to one to two reps in reserve. People will say, oh, well, you should, use compound movements and I get it. And also if someone doesn't feel comfortable doing a deadlift or a squat or some kind of big compound movement and they want to use machines, totally fine. I'm sure you hopefully agree with that.
35:59I agree. I agree a hundred percent. I mean, I think as we age and adjust and I've seen that become more prevalent, that kind of stance, I guess on, you know, some of the Instagram stuff with, because at one point I remember it was very kind of old school. You had to squat, you had a bench, you had a deadlift. And now there's some great human performance professionals doing, hey, you can lunge. You don't have to do that. And thank God, because I'm terrible at squatting. The other thing here was looking at some other papers in postmenopausal women, higher dose testosterone therapy for up to 24 weeks was associated with a dose dependent increase in lean mass.
36:37And this was actually up to 4.4 % and muscle performance. Again, these are short-term studies, I think, especially because the FDA has removed this black box warning. We're actually working on a randomized control trial now with testosterone. That's exciting. That is very exciting, just to show and create a body of literature showing the safety of it. Again, I'm assuming that that's what we're gonna find, but I'll keep you posted. Now, there is a few things that someone has to think about in terms of when would you be concerned about testosterone? If your hemoglobin and hematocrit go up, typically, again, whether it's up to 48%, you know, by 50%, we are decreasing it.
37:21We are recommending a blood donation. This is a bit controversial. The science of elevated hemoglobin hematocrit, again, the science is a bit controversial. Some physicians will recommend a blood donation. Some will not. We typically do a blood donation. What's the alternative? To not, but then your hemoglobin hematocrit rise, but not dissimilar. Again, it depends on how the body responds and we should talk about this. If an individual is not doing an intermuscular injection, so when you do a bolus of testosterone, you get this big bump up and you get erythropoiesis. So you get an increase in red blood cells.
38:00If you do a lower dose sub-Q, say split it up three times a week, the same amount, you don't see the elevation in hemoglobin hematocrit. You know what I can't help but think? All your cyclists and runners listening to this podcast just went, okay, intramuscular next time the marathon's coming up. That's right. I'd never even thought about that. So would that improve performance? Well, it would. I mean, I imagine that's why all the, remember the Tour de France cyclists were taking testosterone? that big scandal you know some years back so I wonder yeah I didn't I didn't know but they must I wonder if they were doing it like around the race so I'm not saying to do that Nick is not saying that so for a normal level typically a hematocrit is again 41 to 50 for men and then females are 36 to 44 percentage again these are non-altitude individuals because if someone lives and altitude, those are higher.
39:01And I think that this is a bit where the controversy comes in, because if we know that people live at high altitude and they have higher hematocrit, should they be not able to be put on testosterone? And so I think there's a lot of conversation that goes in and around this, and I'm hoping that we will see more about this. Now, the high hematocrit level is erythrocytosis. It's red blood cells versus a pathology condition, which is polycythemia vera, which is an increase in red blood cells and other cells. It's kind of across the board. The two are different. And that would be the one thing for testosterone replacement therapy is that people will look, say, okay, well, you have an elevated hematocrit.
39:47We're going to cut back your testosterone or we're going to have you do a blood donation split 50 50. Is that in just to make sure I'm understanding is that because you know one like risk of stroke is that the main concern and then is does that correlate with higher blood pressure naturally with it with that? Possibly so those two things yes. Thank you to our place for sponsoring today's episode. Most people focus on the ingredients they cook with but the cookware matters just as much. Most nonstick pans still contain harmful chemicals like Teflon and other PFAS. One study found that 80 % of nonstick pans contain these forever chemicals.
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41:04We have been using these pans in our family for a very long time. They're ultra nonstick, they clean easy, and buying the set saves you$150 compared to purchasing each piece separately. Stop cooking with toxic cookware. It is very important. Upgrade to Our Place today. Visit FromOurPlace, that's F-R-O-M-O-U-R-Place.com slash Dr. Lion, and you will get 10 % off site-wide. And it comes with a 100-day risk-free trial. I promise you, once you switch to these pans, you will never go back. What else should people be looking at? Well, we also talked about changes in lipid profiles. Yes. So there's an intermuscular testosterone formula that those are associated with a greater increase in hematocrit compared to the gel.
41:59I will say the gel or the patch. So there are other routes of testosterone. There's also an oral lymphatic, so chysetrex. is an oral testosterone, but it's not through the liver. It goes through the lymphatic system. The difference is these fluctuating serum testosterone concentrations. It's the fluctuation that seems to really affect hematocrit levels. But you can account for that by changing the delivery and the delivery schedule, which I think can be really valuable. And I will tell you one other thing. What is another perhaps subclinical risk of testosterone? and this is a pearl for any physician listening or anyone who is reading blood work any health care provider is that we had a patient and we actually saved his life he had pernicious anemia and he was masking it was masking his pernicious anemia and actually it's a very good friend he's a famous navy seal um i could probably talk about him um and he wouldn't care to talk about him all time but yeah he i was like you've got sleep apnea and that's why your hematocrit is going up right So there was this, you don't want to layer on testosterone with someone with sleep apnea.
43:06It could potentially make it worse. But this is a clinical pearl. If someone has underlying anemia, pernicious anemia is a destruction of intrinsic factor in the gut. So it's an autoimmune condition that these people cannot absorb internally. They cannot get B12. It's deadly. It can kill you. And typically, you have to identify it. When you are on testosterone, because testosterone increases erythropoiesis and the generation of red blood cells and is also will mask anemia, can help, quote, treat anemia, it was masking his pernicious anemia. He was having these terrible symptoms of shortness of breath.
43:46So he's having, he's totally symptomatic. I mean, he had been to the ER multiple times. and so this is a pearl that if someone goes on testosterone it can mask underlying causes of anemia what was it was underlying for the i'm curious for the pernicious anemia he had gut issues shot in the gut or anything he did so he has been shot multiple times but because of his deployments he also had psoriasis he had a lot of conditions i mean he had uh some kind of roundworm as well but forever he will always have to take a b12 shot but the testosterone actually had masked that and i think that what made what triggered you to be like oh i did a peripheral blood smear and i'm extreme if it's one thing that you know people say okay what's one word that defines you or that would represent you and i would say relentless is in that category love it it's just extremely relentless and i care very much for him he was in the same troop as my husband so he's one troop team 10 one troop just like shane and there was no way i was going to let something there was something that i could do about it there was no way that i wasn't going to do it.
44:48And so I was just obsessively going to be like, there's something wrong. Cause you're going to the cardiologist, cardiologist saying you're fine. You're going to the neurologist, the neurologist is saying that you're fine, but you and I both know that it's not psychosomatic. Right. These, these guys, they don't complain unless something's wrong. And usually by then something's like hanging off their body, right? Like, I'm pretty sure that that limb is supposed to be a dach. Yeah. I would say extremely relentless. It's fascinating. And it saved his life. No, that's a great case study. Wow. It absolutely saved his life.
45:20So that kind of goes about, well, how do we think about taking testosterone and what potentially could it mask? So an IM injection, which would be in the shoulder or the butt, or I've got one patient that puts it in her thigh. She's bananas. I'm pretty sure that that hurts a lot. Nick, you and I were chatting. We talked all about testosterone use, a little bit about the history of testosterone use, what it can do for women. However, there are various ways an individual can take and test for testosterone, both men and women. For women, we talked about the cream. We talked about intramuscular injection.
45:53We talked about a sub-Q injection. I think eventually for women, they'll also be able to take an oral lymphatic absorption. Men are also already there in terms of Kysetrex. We talked about the best blood test, and that is a liquid chromatography mass spec. And that's just a technique. We also spoke about the side effects, meaning potential for increase in virulization at supra physiologic doses, supra physiologic doses, meaning it's outside of the normal range for both men or women. And we talked about one of the things that we see in terms of side effects. So there's a virulization that will happen in much higher doses.
46:34We also talked about you wanted to bring up the change in lipid profile, specifically specifically for testosterone versus other anabolic agents. What do you got? Yes. So this is what I found fascinating. So oral testosterone therapy is associated with a significant reduction in HDL cholesterol for women, right? Non-oral testosterone therapy, so the transdermal, injectable, at physiological doses, so we should say that, has been shown to not significantly affect HDL cholesterol in women over the short term and even observational data on exogenous testosterone levels and older women suggest that higher physiological testosterone is associated with higher HDL and lower triglycerides.
47:16So kind of a interesting, you know, stuff to unpack that it's not just testosterone, but it is all about the mechanism of delivery. And I think it's really important because there's a lot of conversation about cholesterol and HDL is the high density lipoprotein and its role is really for transporting cholesterol. You can have a high HDL. People typically think of this as quote good cholesterol, but really it's not good or bad and it's not just the amount of HDL. So if we were to look at the numbers of where we want HDL, which we'll go through, but it's how is the quality and the functioning of that HDL, which I think is really important to look at the functionality and the particle quality.
48:03Someone could do that if they do a Boston heart. And this is looking at some of the databases. This is the American Association of Clinical Endocrinology, and their guidelines are the following, that HDL C less than 40 is an independent risk factor of atherosclerotic cardiovascular disease. And this is ASCVD. And again, this is thinking about plaque, meaning that the HDL is not able to transport the other particles. And so you get this plaque buildup. And that's in both in men and women. And less than 50 milligrams per deciliter is a marginal risk factor in women. So HDL, when we think about a high density lipoprotein, refers to the class of lipoprotein in the blood that's responsible for transporting cholesterol from peripheral tissues back to the liver.
48:59And this needs to be functioning, which is why it got the name of good cholesterol. However, there are certain guidelines. And basically, if someone is taking testosterone, it doesn't seem to negatively impact if they are taking it by injection or topically. Is that what you found? Yes, that is what I found. So oral testosterone therapy reduction, right? Oral if it goes through the liver. Yes, if it goes through the liver, but the transdermal and injectable seems not to affect it. And that's important because you want good functioning HDLs. Now I will say something else, and we've had Dr. Mike Twyman on the podcast many times levels above 80 to 90 milligrams per deciliter is linked to increase in all-cause mortality and increase in cardiovascular disease and that's wait the reverse of what people would think that is the reverse of what well oh you just you just shattered my world i'm so sorry well because because also right in practice you look at cholesterol divided by hdl right for that ratio.
50:07So those higher numbers like 90, 95 is always going to keep it within, you know, under that five or you might be a three, 2.4. So they'd be classified as low risk. But you're telling me that no, that doesn't necessarily put you at low risk. That is correct. And that's why a Boston Heart or additional testing, looking at the particle quality, looking at ApoB, looking at all these other markers rather than these isolated ratios and independent markers, I think it's just really important because people typically think that 60 or higher is considered to be protective. And yes, it is 60 to 70 and potentially even higher than that.
50:47But one just has to make sure that the functionality of the HDL is good. And that becomes important. And listen, during perimenopause and menopause, we see a lot of shifts of cholesterol, LDL cholesterol, HDL cholesterol increase in ApoB has to do with these, you know, this relationship between estrogen and these transporters. But the reality is we have the ability to test for it. And testosterone within physiological ranges don't seem to have a negative impact. Other anabolic agents can, depending on the agent, meaning if we're talking about anabolic steroids. And one of my goals is to really help dissolve this stigma that anabolic steroids, even the word anabolic steroids, seems to have with people because anabolic agents can be very helpful when clinically indicated.
51:38And again, not all of them affect LDL cholesterol or HDL cholesterol. There's a normal physiologic process, but I'm really glad that you brought that up. And if people are going to go on testosterone, you want an entire panel. Someone gets a baseline panel of free and total testosterone, sex hormone binding globulin, estradiol, progesterone. They should also include a thyroid panel. They should also include an iron and a ferritin, really looking at all of these things, luteinizing hormone, follicle stimulating hormone, everything. And also, so for the women, but also men should have comprehensive panels as well.
52:19How often, so you put somebody on testosterone, then how often are you following up with panels? You get a baseline, make sure that everything is where it should be, see what we're looking at. And then four weeks after, we also get a baseline as to where they are so that we know if we move it up or down. You know, because you don't just start testosterone, men and women just all of a sudden feel great. It takes time. And typically we want to give people at least four weeks. But you still, even if they haven't gotten their full effect, you do want to start monitoring. And then of course, a CBC.
52:51You know, some people just get a hemoglobin hematocrit, which again, we talked about hematocrit as the oxygen carrying capacity, the red blood cells, but you really want to get a full spectrum. So it's baseline, four weeks after, you allow them to go for a period of time. And then we check in another three months to make sure that they are where they should be. And once someone is stable, every six months, anywhere from four to six months, you know, you want to keep your finger on the pulse. What can a woman expect, right? Who's, you know, you determine she's, she's low testosterone or maybe other hormones.
53:28You put her on this, this hormone profile, like, you know, what and when can she expect kind of the changes you see? And I would love to hear your like most dramatic change or patient you've had over the years. The most dramatic change. And there's one patient in particular I'm thinking about. It wasn't just testosterone. So we use low dose terzepatide. And this was really about, you know, she had very low sex drive, low libido, felt like she had lost a ton of muscle. And again, testosterone is not FDA approved for muscle mass. It's not, quote, recommended for body recomp, which is fascinating because we know sarcopenia is really dangerous for people, which is sarcopenia is defined as loss of muscle mass and function.
54:09We think about it as something for aging, but it's not a disease of aging. and one of the most dramatic transformations that I've seen was this woman she had always been training she's 60 this woman is a beast she's incredible and what we did is she had low libido low recovery a ton of joint pain and we optimized her hormones and her testosterone dose you know we're not talking about 20 to 30 milligrams a week so typically the testosterone dose is you know one-tenth of a male dose. It was dramatic for her, and we used a low-dose trisopatide. This was able to help curb her appetite. She's training a ton, just extremely hungry.
54:55Very low dose, starting dose, and then optimize her testosterone, progesterone, and estrogen. I mean, her body transformation was unbelievable. This was a woman who never wanted to get on the scale ever. And you know, she's like running ultras. Wow. Her body fat percentage is 16 % now. And it's not effort. It just seemed that we were able to put everything into place. And this took six months. And again, everything is within range. We're not talking about pushing super physiological numbers. She's able to recover. She's sleeping. So one of the things that we see is that women that are going through perimenopause, menopause aren't sleeping.
55:36They're not recovering. you add progesterone oral progesterone not cream but oral progesterone it seems to affect as a GABA agonist in the brain allows women to sleep estrogen we know estrogen is great for bone and brain function there are estrogen receptors on muscle again i don't think it's the primary driver but just the combination and then sub-q testosterone injection with a tiny little bit of terzapatide and this woman it dramatically has changed her life that's awesome you talk about the physical but then also like what about the cognitive what did she report two things mental freedom from thinking about food and her body weight this is a woman who had been obsessing about how she looked and performed for 30 years and we took that off the table and it just completely transformed her life it was probably one of the most fulfilling moments i mean and again we see this there is so there's the cognitive process a cognitive thought process I've got brain fog and I'm tired.
56:37And then there are people that are super tough. And regardless if they're tired or not, they're still executing. And that was her. But did her cognition improve? I would say yes, but she never complained about that. What she complained about was just constantly feeling uncomfortable in her skin and just really obsessive about how she looked and performed. And this is something that consumed her for 30 years. wow and what's so you know fascinating about listening to that is the descriptors you told me at the age of 60 i'm willing to bet 99.9 percent of physicians would be like you're 60 it's just part of getting older right it's just the expectation 100 miles you know this woman this woman outlifts me she puts four plates and we should all train here she puts four plates on that sled plus so she wraps the sled around her weight plus kettlebells 90 pounds of kettlebells I mean, this is extraordinary.
57:30And so we don't, you know, we think about testosterone replacement therapy for men. Nobody blinks an eye. Yeah. Men will come in. I have low libido. I have low muscle mass. I have brain fog. The hair is falling off my legs. Oh, you need to refer testosterone here. Let me just put it in the water. But a woman comes in and is like, oh, I'm not feeling well, blah, blah, blah. And it's, oh, well, you know, it's in your head. Maybe you need an SSRI. But we don't think, and again, I, you know, believe muscle is so important, but we don't. not even clinically indicated to say, you know what, you need testosterone.
58:01Women aren't even thinking about that. Similarly, just how men aren't even thinking about estrogen, which is equally important for men and women. And we have a lot of work to do, but the goal of this episode is what is testosterone? How is it being prescribed? What are the benefits? Where's the safety? What do we begin to think about it? And from a clinician standpoint, who is perhaps listening to this, I think in the next five years, we're going to begin to see FDA approved usage. And just because something isn't FDA approved, it can still be used quote off label, which means you review the benefits and the side effects and what it's clinically indicated for and what it's not.
58:41There's one more aspect about testosterone that I think is important is there is a use of testosterone vaginally, estrogen, progesterone vaginal. And why is this? Because this tissue atrophies and nobody wants that, right? Because that's just not ideal, increases risks of urinary tract infections. Before we wrap up this episode, I did want to talk about DHEA because you brought it up and I think that it's something that's important. And I'm just going to pass that over to you. So DHEA you can get as a dietary supplement, right? That's in that category. You don't require a prescription. And so I was wondering about if an individual is a little wary, maybe they're, you know, worried about needles or the stigma of testosterone.
59:32Could they consider or would you consider like higher dose DHEA to increase things like the estradiol and testosterone because it can go either way right in their body and and what i found was this you know review is 21 studies and it does seem to to move the needle so testosterone by 24 points uh estradiol by nearly eight but it took higher doses of 50 milligrams or more to produce those results especially adults over 60 so so my question to you would be do you guys use dha in practice? Are you, you know, seeing people take it or? I think it's a great question. And I typically test DHEA sulfate in all my blood markers.
1:00:18And I will say that when women are on androgens, testosterone, et cetera, that we see a decrease in DHEA. So whatever the pathway is, it seems to pull it forward. And in clinical practice, we might use five to 10, maybe 20. Typically, I haven't gone up to 50, I would just move them to use testosterone, or I would, again, as a practicing physician, there's obviously a discussion, maybe they want to use it, maybe they want to use DHEA versus testosterone, but I would certainly be open to it. And I do think that where the real magic of DHEA, which DHEA may have some anti-inflammatory effects, where I think that there is benefit is if someone is on testosterone therapy, also adding in DHEA again, because I see that the DHEA levels seem to decrease when people are on testosterone, maybe, you know, it's shutting something off or something of that nature.
1:01:14But what else did they find in the study? Anything else of relevance? Because it's interesting. So there's 21, this was a review of 21 studies and it did move the needle. It did increase estradiol and it seemed to increase testosterone. Again, one would argue is 24 points enough. That's a lot for a dietary supplement. right but what would it be um compared to uh testosterone but again it seems like all of these things are dose dependent there is use for dhea they do use intervaginal dhea by the way well dr nick berenger we have covered how women can utilize testosterone without getting quote too jacked too hairy no beards no beard free and we are at a new frontier in medicine where people are really advocating.
1:02:02Both clinicians and patients are starting to advocate for themselves. And we appreciate you guys and hope you enjoy this episode. And if you want to hear more, hopefully you are involved with the behind the scenes super cast. And that is our private community where you can listen to these episodes ad free and ask questions and find out how many pushups does Nick really do? Not a lot.
1:02:30Thank you.
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Timestamps:
0:00 - FDA Lifts Blackbox Warning on HRT
1:08 - Definitions: Viralization & Androgens
3:08 - The New Landscape of Women's Health
4:46 - Gold Standard Testing: Mass-Spec
5:52 - Finding the Estrogen Sweet Spot for Men
8:07 - Testosterone Lab Ranges for Women
10:16 - Is Testosterone Safe for Women?
13:30 - Anabolic vs. Androgenic Steroids
16:56 - HRT Red Flags: Who Should Not Start
18:19 - Longevity Benefits of HRT
21:23 - Estrogen's Role in Brain Health
24:32 - Performance Impact in Young Women
33:03 - Type 2 Muscle...
