The Shocking Truth About Hormones and Weight Loss Over 40
15 Dec 2025 · 25 min
This is an episode of JJ Virgin’s Well Beyond 40 podcast focused on how hormones (insulin, cortisol, thyroid hormones, estrogen, progesterone, testosterone) influence weight, body composition, sleep, mood, and metabolic health in people over 40, with practical diet, lifestyle, supplement, and testing suggestions (eat protein first; resistance training; sleep; HRV monitoring; functional-medicine testing/HRT). The episode also includes multiple sponsor/read ad segments (Earth Breeze, Wayfair, Monarch, Corona) and a brief promo for Anne Bogle’s podcast segment at the end.
Questions this episode answers
February 18, 2024
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I'm JJ Virgin, PhD dropout. Sorry, mom turned four time New York Times bestselling author. Yes, I'm a certified Nutrition specialist, Fitness hall of famer, and I speak at health conferences and trainings around the globe. But I'm driven by my insatiable curiosity and love of science to keep asking questions, digging for answers, and sharing the information I uncover with as many people as I can. And that's why I created the well Beyond 40 podcast to synthesize and simplify the science of health into actionable strategies to help you thrive. In each episode, we'll talk about what's working in the world of wellness, from personalized nutrition and healing your metabolism to healthy aging and prescriptive fitness. Join me on the journey to better health so you can love how you look and feel right now and have the energy to play full out at 100. Hey jj, Virgin here. Okay, real talk. So often the holidays sneak up on me. Travel, gifts, hosting, you know, all the things and suddenly it's like, wait, who spent what and where? And I know I'm not the only one who's looked at a bill in January and thought, wow, that escalated quickly. If you want to keep your finances under control this holiday season, you need to be using Monarch. It's rated the Wall Street Journal's best budgeting app of 2025. Monarch is the all in one personal finance tool that brings your entire financial life together in one clean interface on your laptop or on your phone. Monarch lets you link everything and gives you real time visibility so you're not shocked later. Right now, I've been checking the holiday spending category so I don't accidentally start the new year with that dreaded debt hangover. And honestly, just seeing everything laid out is already helping me stay more aware. This season, Monarch does the heavy lifting. It links your accounts in minutes, gives you smart categorization and super clear visuals. Yes, that end of year reset could be a real goal. This time. Don't let financial opportunities slip through the cracks. Use the code virgin@monarch.com in your browser for half off your first year. That's 50% off your first year@monarch.com with the code Virgin.
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You've probably heard that your metabolism doesn't really slow down until around the age of 60, but your body seems to be telling you otherwise. You've noticed you can't seem to lose weight like you used to. So if it's not metabolism, well, what is it? Look no further than your hormones. Here's how they impact your weight and more importantly, here's what you can do about it. So the first big one of course is insulin. And insulin has a significant impact on your weight because it helps control the storage and utilization of nutrients, particularly carbohydrates and fats. Now when you eat carbohydrates, you're going to have blood sugar, glucose in your blood and then insulin is released in response to that to transport glucose into the cells. Glucose first is going to get stored as glycogen in the livers and muscles. But if there's more, the additional is converted to fat and stored in fat tissue, leading to weight gain over time. Now, chronically high insulin also is going to affect hunger and your fullness cues. You want insulin to come up when you eat and then you want to come back down to ideal fasting levels of like 2 to 5. So how do you make sure that this happens? First off, my mantra, you're going to want to eat protein first. The reason that you want to eat protein first is that way I know that you get in the protein that you need, but also when you eat protein first, it's more satiating and you tend to make better food choices. And by better food choices, I mean by eating by the plate. So my perfect plate is clean protein. Say something like wild salmon, grass fed and finished beef, where you're getting great protein sources with all the essential amino acids in the right balance, plus some healthy fats. And then you're also loading that plate with a lot of non starchy vegetables. Why do I love this so much is because I just got protein, fat and fiber. And that is truly the trifecta for satiety. Super important. And let's face it, if you're hungry, you're not going to be able to stay on your eating plan, right? So super important. So that's the first part of it now, also important here with improving insulin sensitivity is resistance training. And a little bit on insulin sensitivity. The more sensitive your cells are to insulin, the less insulin response. You need to be able to store those nutrients. So you want to be insulin sensitive. We become more insulin resistant as we gain more body fat, as we become more stressed, as we don't sleep well. So we want to improve our insulin sensitivity. And here's how we do that. Number one, resistance training is like the best, fastest way that you can improve your insulin sensitivity. The next one is good sleep. In fact, one poor night of sleep and you're more insulin resistant. Of course, vitamin D is super important for improving insulin sensitivity, as is fish oil. So if you're eating good wild salmon, you got a one, two punch there. Next up, cortisol. And boy, when I think about, like, things really hitting your metabolism and making you store fat like insulin plus, cortisol is a one, two punch. So while insulin, we tend to become more insulin resistant as we age, we also tend to have higher cortisol as we age. And especially this happens in women. Now, chronically elevated cortisol can cause weight gain through a variety of different things. First of all, we've got a bunch of cortisol receptors in the belly. So if your cortisol is higher, you tend to store more visceral adipose tissue. Next up, when cortisol is up, it tends to impair quality sleep. And if you're not sleeping well, you're going to have more insulin resistance like I just talked about, and you're also going to be hungrier. That is a really bad recipe, because if you're more insulin resistant, you're better at storing fat, not burning it. And now you're hungrier and probably eating excess calories. So now you're going to be more likely to store those calories as fat. Next up, when you've got chronic cortisol, it can impair your thyroid function. It can also lower testosterone and lower progesterone. Progesterone can impact that sleep. But now you've got lower thyroid, lower testosterone, and that means that you're going to have more trouble building muscle and you're going to be more catabolic, which means it can break down muscle, it can impair muscle protein synthesis. It also can make your gut more permeable and create gut dysbiosis. When that happens, a couple things happen. Number one, you can start to have more cravings. Number two, that gut permeability can make you start to react to foods. And the most Common foods that you start to react to are dairy and eggs. And these can be really great quality proteins, but not if you're intolerant to them, not if you're creating this immune response to them because of this intestinal permeability, because then you'll get this low grade inflammation. And this low grade inflammation can make it even harder for you to go through muscle protein synthesis. So this is all a problem. All right, so what do we do about this? Well, for stress, one of the ways that you can monitor it, it's kind of like, well, how do I know if this is really an issue? And this is where heart rate variability can be amazing. You want to start to monitor your heart rate variability, find out what's normal for you and look at how you can improve it and then look at the things that impair it. So meditation can be amazing for improving heart rate variability. Great night's sleep, doing the right amount of exercise and especially high intensity interval training. But the right amount, too much exercise, you'll see your heart rate variability goes down. You want a higher heart rate variability. Supplements can help here as well. GABA, B vitamins, glycine, my take 10 stress support, vitamin C, because the number one vitamin used by the adrenal glands is vitamin C. So this can be super big for this DHEA and some of the adaptogens, especially rhodiola and ashwagandha. But again, it's challenging with cortisol because it's sort of like, how do you really tell what's going on with stress? When you go get a lab test, generally they'll do a early morning 8am Cortisol test, but this is just a snapshot. So a way to really be able to tell what's going on is to go do an adrenal salivary index where you spit throughout the day and it tracks it to see if you've got elevated cortisol or maybe now you've got adrenal gland exhaustion, or maybe your curve is backwards to where it should be. But an easier way to monitor this on a daily basis is to get to know that heart rate variability. You can track it through a whoop or an oura ring or an apple watch. And then to really start to work on how you get that to a higher level for you, the next one is thyroid. And one of the things that you'll start to see with everything we're talking about is they all impact each other. Because when I talk about thyroid, if you are under chronic stress, this of course can impair your body's conversion from inactive T4 thyroid to T3 thyroid. If you've got issues with your thyroid, this is going to give you issues with your metabolism, because ultimately, like the big predictor of your metabolic rate, big governor of it is your thyroid. If your thyroid is underactive, you're probably going to be hungrier, but you're also going to have reduced calorie burning, which is going to be problematic for you being able to build muscle. Thyroid hormones, and especially T4 and T3, impact hormones that regulate appetite and metabolism, like leptin and ghrelin. And an underactive thyroid can disrupt the balance of these hormones, which again, can lead to being hungrier and not feeling as full. And again, one of the biggest challenges with all of this is if you're hungry, you will tend to overeat. If you overeat, you're going to tend to gain weight, right? And then we also know hyperthyroidism can have psychological effects. It can give you mood changes like depression and anxiety. And sometimes when you have depression and anxiety, that also can lead to overeating because you're using food to stuff those feelings, right? Or maybe you've got some cravings. Now, another thing about thyroid hormones, T3 and T4, is that you need them for energy production within the body's cells. And if your thyroid hormone levels are low, the cells may not be making enough energy for proper muscle function, which means you got weak muscles, you've got less stamina, so you're not going to be able to work out as hard as you want. And of course, if you're not as active as you can be, then you're going to burn lower calories, which can also contribute to weight gain. Now, another thing with thyroid is that thyroid can influence muscle protein synthesis, which is mission critical, right? For building muscle. In hypothyroidism, you have reduced availability of thyroid hormones, which then impairs the body's ability to build and repair muscle tissue. Plus, people with hyperthyroidism may also take longer to recover after exercise, so they're not able to repair that tissue after they do that damage. So thyroid's super duper important here. And here's the deal. The labs are what are the average out there? They're not what's optimal. Like every functional medicine doctor I've talked to has said, gosh, those thyroid labs is not where you want to be, where you'll see the range from, I think it's 0.1 all the way up to 4.5, where we really want to see someone in a TSH is somewhere in the 0.5 to 1.5 range. So you want to have a complete thyroid panel where you're looking at your TSH, your free T3 and T4, and your thyroid antibodies, and possibly even your reverse T3 to really get that full picture of what's going on with your thyroid. And then depending on that plus symptoms. And there's some classic symptoms, by the way, I did a YouTube video on simple tips to boost your thyroid health and also talked about some of the different symptoms, like constipation, losing the outer third of your eyebrow, having a little yellowing of the skin, not being able to build muscle, being depressed, elevated ldl. That plus lab tests. You really want to work with the doctor on how to improve those numbers and potentially need to take some thyroid hormone. All right, estrogen. So estrogen is super interesting because estrogen is going to influence where your body fat is. When you have higher estrogen, that's where you tend to have that more favorable female body fat distribution, which means that you're going to have more subcutaneous fat rather than visceral adipose tissue, which is what we want. You'll tend to have more fat in your hips and thighs and you won't have that big belly fat. But things change as you start to go into perimenopause and estrogen starts to drop significantly. In fact, my mom called this shifting sands, where basically you lost your butt and it went into your gut. And I remember thinking, I am not letting that one happen to me. But that is a sign of low estrogen, is all of a sudden you're losing the thigh and the butt fat, which at first you might be going great, except that all of a sudden now it's going into your belly fat and that's that visceral adipose tissue, which is really, really problematic. Now, I'll tell you, when I was seeing a lot of people, one on one, I could tell before I even talked to them when I would look at their labs if their estrogen was low and they weren't on hormone replacement therapy, because I'd see it in their cardiovascular markers. I would see it in something called highly sensitive crp. Their inflammation went up. Their cardiovascular markers that could signal a problem like apob, LDL would go up. So this is where you want to really look at estrogen and go, if your estrogen is low, you're going to want to talk to your functional medicine doctor about replacing it. Because estrogen is mission critical, not just for body fat and making sure that you are not gaining that visceral adipose tissue and making sure that you can build muscle. But estrogen is important for heart health, bone health, and brain health. And I have done multiple podcasts now with doctors talking through the Women's Health Initiative and how wrong it was and how important HRT can be. Because estrogen has big heart protective effects, right? Including improving cholesterol profiles and maintaining healthy blood vessels. It also helps maintain bone density and strength and prevents excessive bone loss and reduces the risk of osteoporosis. Plus, it's neuroprotective and may support cognitive function. It can affect memory, it can affect mood, and it can affect overall brain health. So if your estrogen is going down, what can you do? Couple different things. Number one, look at the supplement dim, because dim helps detoxify. We've got multiple different types of estrogen, estrione, estriol, estrone, and estradiol. And the estrone is the one that we really need to detoxify. Well, dim helps you do that. Some isoflavones, things from garbanzo beans, sesame seeds, can help you boost a little bit of your own body's estrogen by being a phytoestrogen. And you can also support your adrenal health, because as you start to go through menopause, you're going to produce more of your hormones through your adrenals, more of your estrogen through your adrenals. So supporting good adrenal health, like we talked about, cortisol can be important here as well. And then, of course, talking to your functional medicine doctor about looking at hormone replacement therapy and if it is the right thing for you, I will tell you, I was just at an event speaking and was going through, like, my three pillars of eating protein first and doing hard things and sleeping through the night. And this woman came up, she goes, I've been doing all of these things for five years and nothing seems to be working. And she'd gone through menopause, and it was like she was doing everything, but she didn't have the hormones on board. I'm like, go get yourself a function medicine doctor and get your hormones on board. Because if you can't get to where you need to be with diet and lifestyle alone and your hormones have tanked, you need the help. Now, one of the other things that you want to look at replacing, beyond just optimizing thyroid function and then estrogen is the next one's testosterone, which, by the way, for women, we have more testosterone than estrogen you don't think of it as this female hormone, but it is definitely mission critical for us for muscle mass, for libido. It helps us maintain our lean body mass and it supports, of course, muscle strength. It's this anabolic hormone. So super important. And of course, when we have good lean body mass, it's going to help us with having a better metabolic rate. It also is important for helping with maintaining bone density. So it may be that you can get some boost of testosterone by taking dhea. Sometimes that can be enough, but quite often we need the supplement it with it as well. A couple things that can help you with elevating testosterone are lifting weights, getting in healthy fats in your diet, having a little some carbohydrates in your evening meal before sleep, and competition. Now, I don't know if it does it for women. I know with men that competition being involved in competition can raise their testosterone. Even watching competitions can raise their testosterone. Don't know about that for women. But this again is one that you want to monitor and talk to your functional medicine doctor about. Now, when you think of estrogen, what opposes estrogen is progesterone. So these work together. And when you're a cycling female, this is produced in the second half of your cycle after ovulation, right. This is the first one that tends to go down as you go into perimenopause, which then all of a sudden you're having crappy sleep, your mood starts to go sideways. Right. However, if you just arbitrarily start taking lots of progesterone, this can actually encourage more fat stores and some insulin resistance. The only time we really tend to get insulin resistant easily is during pregnancy when we've got steady, higher levels of progesterone that promote insulin resistance and fat storage, specifically in the hips and thighs. Both estrogen and progesterone will put that fat around the hips and thighs, but estrogen does it probably a little bit more than progesterone does. Now, in the right amount, it can have a little bit of a thermogenic effect. But remember, with these hormones, it's all about the balance. That's why you want to do what you can through diet and lifestyle. First, really make sure that you've got cortisol working well, that you're supporting your adrenal glands during perimenopause and menopause. Super important to focus on your adrenal glands and making sure your thyroid is working well because you cannot balance your hormones without that. Quite often when you get those things really dialed and get in your sleep and your exercise and your diet. Then you can look and go, what's the minimal dose I need of these hormones? Working with functional medicine doctor to feel good and have the benefits from them. Now when you look at bone health, you've got estrogen and progesterone that are important here because you've got estrogen helping maintain bone density by inhibiting bone resorption, inhibiting the breakdown of bone. And then progesterone helps stimulate bone formation. Plus, progesterone is really helpful for sleep. When I take progesterone, I'll cycle it in. I do it in the evening because it acts like kind of a sedative for the central nervous system and it helps interact with GABA receptors in the brain. So again, it's good for relaxation. Now again, the goal with hormones is do as much as you possibly can through diet and lifestyle. And as you start to get into your 40s, you lose that margin for error of the way you used to be able to live. So sleep and stress and exercise super mission critical. And then of course, eating correctly. Remember, eat protein first. Your hormones are made from protein. You need to have quality protein on board. Then you're going to make it so easy when you go into work with the functional medicine doctor because you have done all of the heavy lifting now you can look at labs and symptoms with them and then get the right amount for you right then and not overload or not have enough. Now best place to start here, of course, is to fix what's at the end of your fork. So I have got a video on hormone balance, how to fix your hormones with these specific foods up next.
Be sure to join me next time for more tools, tips and techniques you can incorporate into everyday life to ensure you look and feel great and more importantly, that you're built to last. And check me out on Instagram, Facebook, YouTube and my website, jjvirgin.com and make.
Sure to follow my podcast so you.
Don'T miss a single episode@subscribetoj.com See you next time.
Hello listeners, this is Anne Bogle, author, blogger and creator of the podcast what Should I Read next? Since 2016, I've been helping readers bring more joy and delight into their reading lives. Every week I take all things books and reading with a guest and guide them in discovering their next reading. They share three books they love, one book they don't and what they've been reading lately. And I recommend three titles they may enjoy reading. Next. Guests have said our conversations are like therapy, troubleshooting issues that have plagued their reading lives for years and possibly the rest of their lives as well. And, of course, recommending books that meet the moment, whether they are looking for deep introspection to spur or encourage a life change or a frothy page turner to help them escape the stresses of work, school, everything. You'll learn something about yourself as a reader, and you'll definitely walk away confident to choose your next read, with a whole list of new books and authors to try. So join us each Tuesday for what Should I Read Next? Subscribe now wherever you're listening to this podcast, and Visit our website, whatshouldireadnextpodcast.com to find out more.
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