In this video Dr. Ashley Frazee explains why men and women often experience very different outcomes when using the same peptide compounds. She begins by critiquing the common online practice of copying peptide protocols without considering individual biology, emphasizing that peptides are cellular messengers whose effects depend on the hormonal environment of the recipient. Frazee outlines the distinct hormonal landscapes of males (testosterone‑driven, relatively stable growth‑hormone pulses) versus females (fluctuating estrogen and progesterone across the menstrual cycle, perimenopause, and menopause) and shows how these differences alter peptide signaling. She then reviews several popular peptide classes: - Growth‑hormone‑related peptides (CJC‑1295, ipamorelin, sermorelin, tesamorelin) and how men’s predictable GH surges favor longer‑acting CJC‑1295, while women’s more frequent GH pulses and estrogen‑driven patterns make shorter‑acting sermorelin a better fit. - Healing peptides (BPC‑157, GHK‑Copper) whose efficacy is modulated by estrogen’s role in collagen production; low estrogen in men on aromatase inhibitors or post‑menopausal women can blunt their effects. - Metabolic/mitochondrial peptide MOTS‑c, which can act as an exercise mimetic for men and as a potential osteoporosis‑supporting agent for women experiencing estrogen loss. Frazee stresses that hormonal changes (e.g., menopause, PCOS, testosterone decline) can shift which peptide is optimal, and she advises viewers to assess their own endocrine status rather than blindly follow internet protocols. The video concludes with a plug for her paid peptide course and a reminder that the content is educational, not medical advice.
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This is Luke on CJC-1295. This is Lisa on CJC-1295. She's angry. Lisa on Sermorelin sleeps like a baby, but Luke, he's wide awake. What the heck? Same peptides, different outcomes? Yeah, I mean, their bodies aren't the same on the outside. What makes you think they match on the inside? I'm Dr. Ashley Frazee. I know a lot about peptides. I even teach a course on them. And today we're doing battle of the sexes. Peptide edition. By the end of this video, you are going to understand 3 things: why men and women can respond to the same peptides in completely different ways, which peptides tend to fit male versus female biology better, and when hormones change the game, and how to stop copying someone else's peptide journey and start thinking about what actually makes sense for you. And just to be clear up front here, this is not medical advice. I am a doctor on YouTube, but I am not your doctor, and in no way am I encouraging you to buy shady research peptides on the internet. All right, here's the problem with how peptides get talked about online. Someone posts their results: BPC-157 healed my tendon in 6 weeks, CJC-1295 put 10 pounds of muscle on me in 3 months, retatrutide— I lost 100 pounds and I'm not stopping. And since peptides aren't mainstream medicine right now, what do people do? They copy the protocol— same peptide, same expectations. But then it doesn't work, or it works differently, and Or it backfires, and then everyone assumes, well, the peptide's overhyped. I didn't get a good batch, or maybe it just doesn't work for me. But maybe this is what actually is happening. See, the peptide is a message, and each body receiving that message is different. A 35-year-old man trying to build muscle and a woman with PCOS or in menopause are not the same receiver, not even close. So what's actually making the difference here? Well, remember, peptides are cellular messengers. Chains of amino acids that fit into receptors in the body like a key into a lock. And when they bind receptors, they're telling the body to do something: heal, grow, recover, burn fat, calm inflammation. BPC-157, for example, is a fragment of a protein made in the stomach. We think it travels throughout the body hitting receptors that signal something like, there's a damaged tissue up here, clean up on aisle 12. Simple enough, right? But the problem is that the environment receiving that signal matters a lot more than we talk about. And men and women have completely different internal environments. Same hormones— testosterone, estrogen, progesterone, cortisol, growth hormone— just in dramatically different amounts, rhythms, and ratios. And the pattern unique to you changes everything downstream. There are a lot of differences between men and women, obviously. But in a nutshell, men are like solar-powered batteries. They charge up hard during puberty with a massive surge in testosterone, it peaks in their 20s, and then it slowly and predictably loses power over the following years, right? Some men can become estrogen dominant, especially if they're overweight and get low testosterone, but that's most of the story for men. It's like this: men are basically skiing down an open powdery hill. Meanwhile, the ladies are backwoods skiing through the moguls. Women are a completely different system. Instead of a solar-powered battery, think of a sophisticated power grid that requires constant recharging and frequency adjustments. And those adjustments happen sometimes every 7 to 10 days. During the first half of the menstrual cycle, estrogen rises, and this is when physical recovery actually feels easier. Insulin sensitivity is often better here, and workouts for women can feel better too. And also fat loss might be easier for women. women when estrogen is rising. But then ovulation happens, progesterone starts rising, things like hunger and water retention happen. You can feel inflamed and more fatigued. And then comes perimenopause, where everything just gets unpredictable. And this is often when women start exploring peptides. In fact, men and women tend to start asking me about peptides in their 30s because this is when they're halfway down the slopes and freaking out. Then there's menopause for women, a complete infrastructure overhaul of the power grid where estrogen drops dramatically. Menopausal women are more prone to gaining weight in their bellies like men do, but the loss of estrogen for women is also hard on their mental health and clarity, and everything's just fundamentally different. Now here's where I'm going to go through some of the different peptides that are popular these days and just show you some differences between a man and a woman for context. Just get your brain thinking. Let's talk about some muscle and strength peptides, or the growth hormone peptides. The ones people use for muscle strength and recovery, like CJC-1295, ipamorelin, sermorelin, tesamorelin. See, here's something that most people don't actually know. Men and women secrete growth hormone in different amplitudes and patterns. Premenopausal women actually pulse out almost twice as much growth hormone as men do. Men have a more predictable, isolated surge of growth hormone during deep sleep and very low daytime levels. Whereas women pulse it out more intensely and also irregularly throughout both the day and the night, which is driven by estrogen. So when a woman takes a peptide like CJC-1295 and uses the bro protocols, she may feel like it's too intense and she might get side effects like irritability from being overstimulated. The peptide just doesn't match her biology. And this is exactly why I tend to think shorter acting options like sermorelin often fit most women better. Whereas the longer-lived CJC-1295 fit men better. And these are just generalizations, of course, but men in general often have more visceral fat. And so the peptide tesamorelin can tend to work better in men until, that is, a woman could be menopausal and then puts on a bunch of visceral fat due to estrogen loss. Well, now let's talk about healing and recovery peptides. You might just think, well, healing is healing, but hormones matter here too. Estrogen is one of the body's biggest drivers of collagen production and tissue repair, which means peptides like BPC-157 and GHK-Copper are landing in very different environments depending on hormonal status. Think of it like soil. In a healthy estrogen environment, the soil is fertile and healing signals land very well. In men, if you're really low on estrogen, it actually matters. Like if you're on a high-dose aromatase inhibitor, what we call an estrogen blocker, and maybe you can't figure out why Wolverine peptides don't work for you? Well, what if it's because you crushed your estrogen to zero and now your tissues can't receive the signal? It's just a theory I have, but men need some estrogen too. And for ladies, after menopause, it's a similar story. So if a peptide suddenly feels less impressive later in life or at different times, it may not be because the peptide doesn't work. The environment is just not primed for it. Speaking of estrogen's protective effects, there's a peptide that most people use for metabolism and energy, but the FDA is looking to approve it as a tool for osteoporosis. And the reason comes down to what happens to a woman's mitochondria when estrogen dips. Estrogen protects mitochondria by enhancing antioxidant capacity and by stabilizing the electron transport chain, which is the assembly line inside all mitochondria that produces all of your energy. And this is why that peptide, MOTS-c, could be powerful for anyone, but it can also be answering 2 different 911 calls inside the body. So for men, aging feels mostly like a slow mechanical breakdown— loss of muscle, slower metabolism, and drained batteries. And according to Research and Biology, MOTS-c can act like an exercise mimetic, stepping in to clean out metabolic sludge, make more mitochondria, and influence muscles to be more efficient and endurance-capable. And that's why most people are interested in MOTS-c. This applies for women too, but the changes due to estrogen loss in menopause are much more detrimental to our mitochondria. Mitochondria are packed with estrogen receptors, and when estrogen drops, the structural and functional integrity of mitochondria take a massive hit. And when this happens, you can trigger sudden systemic inflammation and rapid bone loss, which is why we're studying MOTS-c for osteoporosis. I know nobody uses it for this right now, but I hope you understand why MOTS-c can act as a force to trigger mitochondrial biogenesis, or the making of fresh mitochondria that don't need to be repaired. And it actually does a lot more than that, but I hope you get the picture. Same peptide, different rescue missions. Cool, right? I think this is part of the reason why so many people get genuinely frustrated with peptides. They listen to all the hype about them online and from their friends who aren't super well studied in biology. And so they spend hundreds or thousands of dollars on peptides following protocols that they find online, and then they feel nothing or too much, or they don't even really know what they're trying to do. And so the conclusion a lot of people land on is, is that peptides are all hype. But I just think that there's always more to it. Maybe it's in my nature. I just don't like giving up. Sometimes the best question isn't, you know, what's the best peptide? It can be a lot more nuanced depending on the system you're putting it into. Unfortunately, it's just not as simple as we'd like, but I hope I've enlightened you a bit today. If you're somebody who's looking to get into the science of peptides, maybe you're a doctor or a practitioner like me, and you want to be ready for patients who come your way asking for them, I've built a full course on peptides. It's got everything you need to get started, and the link for that is in the description. I'm Dr. Ashley Frazee. If you like this video, please hit like for me, subscribe to my channel, and I'll keep working to keep you curious. I hope you have the best day.
