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The Dr Louise Newson Podcast

23 Jul 2026 · 33m · 15 chapters

Episode artwork

86 - How hormone treatments, including testosterone, reduce future diseases

In short

The episode argues that hormone treatments—especially testosterone, but also estrogen, progesterone, and related metabolic hormones—can reduce future disease risk by lowering inflammation and improving brain, muscle, bone, and cardiovascular health. It criticizes the Women’s Health Initiative trial’s relevance to current prescribing and says clinicians often under-treat women (and under-recognize men’s hormone needs). It emphasizes precision medicine, risk-benefit decisions, and proactive care rather than waiting for disease.

Guests

Florence (author of Invincible: Defy Your Genetic Destiny to Live Better and Longer; long-time hormone clinician/researcher). Louise (podcast host; women’s health/hormone-focused physician; discusses hormone education for GPs and clinical experience).

Key claims

WHI used non-physiological synthetic hormones and older, higher-risk women; data supports starting around perimenopause/menopause. Hormones cross the blood-brain barrier and affect neurotransmitters, explaining brain fog/anxiety. Low testosterone contributes to muscle loss and higher inflammation markers (hs-CRP). Not prescribing hormones is portrayed as causing more harm than prescribing.

Notable examples

Identical twins with different osteoporosis outcomes after long-term testosterone use; a 72-year-old with hysterectomy whose anxiety/low mood improved on hormones; family history and genetic risk (APOE4, MTHFR) guiding prevention; testosterone used for decades to avoid bisphosphonates/osteoporosis.

Written by AI. May contain mistakes.

Chapters

0:45

Challenges in Women's Health

Discussion on the misunderstandings women face regarding hormone treatments.

“I'm the only person in my family that's ever been a medical doctor.”
2:36

The Impact of the Women's Health Initiative

Analyzing the Women's Health Initiative trial and its implications for hormone treatment.

“And that's why the data in the end said you have to start it right around perimenopause or menopause.”
4:28

Understanding Hormones and Inflammation

Exploring the role of hormones in inflammation and disease prevention.

“In the States anyway, I can't speak to the UK, back in November, they did remove the black box.”
5:48

Personal Experiences with Hormone Treatment

Sharing personal stories about the benefits of hormone therapy for osteoporosis and overall health.

“You're not going to be able to package the sugar.”
8:02

Hormonal Myths and Misunderstandings

Debunking common myths about women's hormone levels and reproductive health.

“My father had it more severely than my mother.”
12:14

The Ethics of Hormone Prescription

Discussing the ethical implications of not prescribing hormone treatments to women.

“And then I remember, yeah, about 10 years ago, I saw a lady in my clinic and my clinic hadn't been there for very long.”
14:01

Importance of Hormone Treatments for Women's Health

Learn about the significance of hormone therapies in improving women's health and quality of life.

“And if they're going to live long, which we are now, live well instead of being in poor health with chronic disease, at least one, sometimes two and three in America.”
14:50

The Risks of Not Prescribing Hormones

Understand the potential dangers of not prescribing hormone treatments to patients.

“So that whole do no harm, none of us as doctors want to do harm, But not prescribing hormones, estrogel, progesterone, testosterone, not prescribing them is doing more harm to millions of women than prescribing them.”
15:30

Challenges in Medical Training and Hormonal Awareness

Explore the limitations in medical training regarding hormone knowledge and patient care.

“Some of it to me is that I think, first of all, you have to have an inquiring mind.”
17:45

The Importance of Holistic Patient Care

Discover the need for a holistic approach in understanding and treating patients.

“I'm more worried about the, you know, the hormones in my brain and my body, but I can't, you know, neurologist knows nothing about hormones.”
Show all 15 chapters
19:53

The Value of Patient-Doctor Relationships

Learn how long-term relationships with patients can enhance care and understanding.

“And one of the things I came up with is beyond patient centric thinking and care, which has become a thing in America now.”
21:43

Genetics and Personal Health Stories

Understand how genetics influence personal health and the importance of individualized care.

“And I have done the similar things in parallel with you.”
24:16

Testosterone's Role in Women's Health

Explore the critical role of testosterone in women's health beyond just libido.

“I can live on sushi and sashimi, she doesn't touch fish.”
28:00

Understanding Testosterone and Hormone Management

Learn about the importance of testosterone for women and how to manage hormone therapy safely.

“and fractures and things that either cause us to die or live in poor health, dependent on family or assisted nursing.”
29:24

Three Key Takeaways for Women's Health

Discover three essential tips for women and healthcare professionals regarding hormone health.

“Does it have to be effectively those three or can I enlarge it a little bit?”
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Transcript

Automatic transcript. May contain errors.

0:02So, Florence, I'm holding up your book here for everyone to see. I was sent this book actually called Invincible, Defy Your Genetic Destiny to Live Better and Longer. and just the cover is enough for me to read it and I have read it but I've been itching to talk to you because everything you've written is so obvious for me really obvious for you but sadly not obvious to millions of people including healthcare professionals yes I couldn't agree more and it's impressive how long you've been in the game of hormones and had to stand your own ground because I have had the same experience in starting women's health.

0:48It's quite phenomenal. I'm the only person in my family that's ever been a medical doctor. And I said to my children recently, I'm actually really embarrassed often to be a medical doctor. I'm very proud of being a doctor and I love my clinical work. I really enjoy my patients, but I feel so sad because I'm sure you're the same every day in my clinical practice. I hear stories, women come and see me because they've been let down by the medical system. They've been told it's in their heads. It can't be your hormones. You're too young. You don't need testosterone. It's a terrible hormone, blah, blah, blah.

1:23Yet these women are offered antidepressants, antipsychotics. They've all been on contraceptive pill, which, as you know, isn't a proper hormone. Yet somehow when you just talk about hormones, as in natural hormones, I don't know, everyone just thinks I'm talking a different language. and people are really scared and it seems like we're going back in time almost. Yes, I agree. I think there was, well, there was the frightening Women's Health Initiative trial in America that was poorly designed. They only used Premarin and Provera, hormones that are not healthy. So Premarin is from pregnant mares urine and has a lot of stuff in it from horses that we don't need as women.

2:06And the medroxyprogesterone acetate was also not the best type of progesterone. It wasn't a physiological progesterone like a micronized progesterone. And the outcomes were actually interesting. It wasn't all negative. The estrogen plus aspirin reduced the risk of colon cancer. But they were also taking care of women, besides the poor choices of the medication, they were taking care of women who were 65 and older who already had underlying metabolic disease and heart disease. And so there was no clarification of where these women started. And that's why the data in the end said you have to start it right around perimenopause or menopause.

2:45But I think people are scared. And frankly, while we underserve women, I think we don't even begin to get to hormones for men. The only thing we talk about is testosterone. And yet men are affected and don't live as long as women. So there's a catch-22 in here somewhere. It's really interesting, isn't it? I used to write a weekly article for all GPs. It went into a magazine called GP and I just wrote every week. And it was on different evidence, guidelines, just to really help GPs learn very quickly. And my mother's still got these articles. So she was showing me recently and there was one in 2001.

3:20And I'd written about hormones and really, I think a lot about my bones. So I wrote a lot about osteoporosis and hormone HRT, really beneficial for osteoporosis prevention. And then I wrote again in 2002, just after WHI study came out. And I just had read the article. I'd just taken it all apart. And like you, I just wrote to say, well, these are synthetic hormones. There are still benefits from them. If there is a risk of breast cancer, it's so small, it's similar to drinking a couple of glasses of wine most nights. But the bigger picture is these hormones are safe. So I carried on prescribing, then learnt more about the natural body identical hormones.

4:02And it was only when I sort of came out into this space that I realized that the whole world have stopped prescribing something that was less risky than most other medications that are prescribed anyway. And now, like you say, we don't even prescribe them. They're completely different. So it feels like 20 plus years on, people are still hopping back to a study that's irrelevant because it's not even what we prescribe. Yeah. In the States anyway, I can't speak to the UK, back in November, they did remove the black box. I know, which is brilliant. But speaking of the kind of medication that you were seeing women taking years ago, I remember the fact that the women, when I met with them and they would say, well, I don't know if it's in my head.

4:49I do have some brain fog and I've been told it's all just my feelings and kind of get over it like get used to it. And I would explain to them that it actually is in their head because all these hormones, estrogen, progesterone, testosterone, cross the blood-brain barrier and they affect neurotransmitters. And so, yes, of course we're affected. We know that as women instinctively because every week of our cycle we can feel different. So we've adjusted to that until we get to perimenopause meets PMS. And then at that point, it's very confusing for most women around their 40s, right? but we have adjusted to the fact that our system changes quite dramatically and then we get pregnant and we know that that's a difference so hormones play a tremendous role and it's not just estrogen progesterone and testosterone it's also glucose it's also cortisol it's also a whole all the different kinds of messages in our body that affect the mind and the body yeah and that's so important when you take things i'm quite simplistic but i like to go back to basics and if you think about how all our hormones work together but also I'm thinking about inflammation which is the core problem with so many diseases that we have as we age but also we have more of them if we don't have hormones so reducing inflammation in our body with having those hormones is just key to preventing disease yet as doctors we're just always told wait for the disease and then you give the treatment but wouldn't it be nice if we took a step back yeah well i completely agree and we see end-stage inflammation one of the biomarkers that i do measure as we continue to evaluate a person is called um c ccrp or c reactive protein or high sensitivity because it specifically looks at the end organ inflammatory effects and they include you know the lining of the arteries And when that number gets up a little and not even very high, but from like one to three, one to five, because technically you want it below one, it's an end stage design of not having enough hormones, having your sugar go out of control because we don't have enough muscle because if you don't have enough testosterone, you're not going to put on muscle.

7:10You're not going to be able to package the sugar. The sugar will affect different organs in your body depending on your genetic makeup. And that was kind of the point of my book in that in defying our makeup, because all of us are programmed to get disease as we age. Father time is not very nice to us. Mother nature takes care of us. And then all of a sudden we hit father time and we begin to decline. But I think by balancing hormones, as you eloquently referred to, and looking at a human being's risk factors, not just reactively, but proactively. How do you define? I feel like we have a crystal ball into each person's future health trajectory.

7:51And by stopping it and using medications and looking at it through the lens, which we chatted about before, through risk benefit, as you pointed out with osteoporosis. I myself was a very high risk on both sides of my family. My father had it more severely than my mother. Men actually get it 10 years later than women. They start getting all these fractures of the wrist, spine and hip because they have more testosterone. We have more protected heart disease. Men get heart attacks in their late 30s because they don't have a lot of estrogen. And estrogen actually protects the heart. So does testosterone.

8:23It's a muscle. And I started taking testosterone 30 years ago because I did not want to go down the path that my two aunts and my father, who I manage, using bisphosphonates to protect his bones at the time. But both my aunts, one on my mother's side, one on my father, my mother's maternal aunt had scoliosis, which actually also worsens osteoporosis. My father's aunt, my father's sister, my aunt, they were all immigrants, my parents. And I was born in America. But as immigrants, they were afraid of me talking to their doctors. So they didn't want me to interfere and talk about estrogen and testosterone at the time.

9:05So unfortunately, osteoporosis really, you know, really ended their life in a way. Because as you get more and more osteoporotic, you know, you can't breathe, your lungs collapse. I know. Can't digest food. It led to their ultimate demise. And I didn't want that. So here's the end of this, beginning the end of this story. So I'm an identical twin. And my identical twin is a dermatologist. So she's a fabulous doctor and smarter than me. and um but she didn't start taking testosterone till about 15 years ago so i took it twice as long she has early osteoporosis i don't and so now we're going to her and so we had a natural experiment of identical twins who can be different but in this case we both started out the same but she ended up with more osteoporosis and i have been on testosterone longer and i think it protected me because my bones look the same as it did 30 years ago.

10:04That's amazing because, you know, I'm quite jealous of you. I'm not a jealous person, but I'm jealous of you in the respect that I only knew that women had testosterone in their bodies about 15 years ago. Before that, I had no idea. I didn't know at all because no one had ever taught me. And then I read something and I was like, what? No. And I'm quite inquisitive. So I went and read all the literature and I was blown away by how it works obviously in the body and the brain the bones everything else and but I get frustrated that testosterone is thought of as a menopause hormone whereas we know testosterone starts declining sometimes in the 20s and 30s.

10:47No it does in the 30s by one to three percent a year yeah and it's not it actually contributes to brain fog which you told me a little earlier is one of the most common complaints of women in the perimenopause it declines way before we go through perimenopause in our very city and that's what we're not looking at we do in the clinic and someone i'm not going to mention any names but someone who's quite well known in menopause space a few weeks ago wrote something in the papers and said if women have normal regular periods they do not have a hormonal issue this is the end of the conversation. And I'm like, that's so wrong.

11:26Completely wrong because you can have regular periods. Get this. So one of my relatives had regular periods when she was pregnant with her third child. And I've had other patients with that. We've all seen it. You can have absolutely regular periods, but not be ovulating. And then you can have irregular periods and still ovulate. So one thing I do know for sure is that each woman is unique. Now, men are unique too, but men tend to change hormonally in a linear fashion where we women could be anything at any time. Even a regularly ovulating woman in her 20s can skip a month, can not ovulate for a month.

12:07There's a lot of reasons for that. So that comment is so general. It's so awful. It has no bearing on anything in women. I know. And then I remember, yeah, about 10 years ago, I saw a lady in my clinic and my clinic hadn't been there for very long. And she came to see me when she was 72. And she did take hormones, then was told to stop taking them. And then she wanted to explore the conversation. But she said the beginning of every calendar month, pretty much, she gets anxiety, low mood and some sweats as well. And she'd had a hysterectomy many years ago. and clearly she wasn't having periods and I thought this is weird and then I have always been taught to listen to my patients and believe them and reflect so I said well you need hormones anyway to protect your but if you want them you know to protect your bones and to everything else and anyway her symptoms melted away she felt wonderful but then I felt really embarrassed because then I went back to basics and realized how much our brain makes our hormones it's nothing to do with our ovaries the whole time and I felt really again annoyed as a doctor like why didn't anyone tell me the obvious things because so many people are told well have a hysterectomy we'll remove your ovaries and that will sort out your hormone problem and that feels like that's not all our hormones are not made in our ovaries so it's not going to cure our problems.

13:31Yeah I think this brings up a very good point that I think about a lot because as physicians, one of the reasons or rationales I think many physicians give themselves is do no harm. And it means to them, don't venture where you don't know or you're not sure and basically say, you know, that's impossible or I won't go there. But I wonder when do no harm does harm. And I think in this case, when we're looking at each individual woman and we know we want them to have vitality and a quality of life. And if they're going to live long, which we are now, live well instead of being in poor health with chronic disease, at least one, sometimes two and three in America.

14:14And I think the UK is not dissimilar. Take care of them because we're not when we worry about do no harm without looking at the data. To me, the data and using it through the lens of precision medicine is absolutely paramount. Yeah. So there's a data and there's basic science. And if the two match, then you've got to, you can't ignore it. And, you know, people don't like it when I say this, but I will say it, and I'm sure you'll agree, is that there are more risks of not taking hormones than taking them. And we've got to change that. So that whole do no harm, none of us as doctors want to do harm, But not prescribing hormones, estrogel, progesterone, testosterone, not prescribing them is doing more harm to millions of women than prescribing them.

15:07And it's a real mind shift, but we have to think about that. And especially, yeah, my work a lot is about giving knowledge, which will give power to women and then choice. So I'm talking here about refusing hormones to those women that want them. Because as doctors, we have to really encompass our patients and share decision making. How much do you think? Some of it to me is that I think, first of all, you have to have an inquiring mind. When I was at Yale, one of the things we looked for in medical students, because I was on the admissions committee for about a decade, and it was a tremendous amount of work, but it was also very rewarding.

15:48And I think curiosity and the ability to question and then look at risk benefit in a way that is not possible. A lot of doctors don't have time. New papers are being manufactured, what, a thousand a day, even in your own field. How do you keep up? If you're not insatiably curious and you're not a lifelong learner, you're going to be stuck. As you said, nobody taught you about testosterone until all of a sudden your eyes. I put women, my own mother was on testosterone and estrogen until the end of her life. at 102, it prevented urinary tract infections. She had one or two of them. And in women who are reaching their 70s, 80s, 90s, urinary tract infections are quite dangerous and can cause sepsis and they end up confused.

16:32And so to your point, we affect hormones or messengers. They affect every cell in the body. Thyroid itself, for example, it not only affects the way you metabolize, it affects your hair, your memory, your cognition, your muscle, your bone. It works in sync, your heart, because of arrhythmias and atrial fibrillation. So looking at a whole system proactively and understanding that do no harm when you don't know about enough or you haven't gone out of your way to really maybe learn as medical school is over in four years in the States. And then you train for one, two, three or four years, depending on your specialty.

17:12You must continue that. But it's still very hard. So in some ways, I don't hold my colleagues responsible because many of them have panels of 2 ,000, 3 ,000, 4 ,000 patients a year. They're seeing 30, 40, 50 patients a day. And so the system itself does not support doctors. And that is one of the issues I have. I totally agree. And it doesn't. And someone was talking to me the other day and saying, well, it's really hard for doctors to keep up to date. And it's really hard for everyone to know something about everything. and I said to her as a family physician if I told you that I knew nothing about raised blood pressure treatment would you come and see me as a doctor she went well no probably wouldn't because that doesn't seem very good I said if I told you I knew nothing about diabetes and she said well I said okay but it's acceptable for doctors to say I know nothing about women's hormones because in my mind it's unacceptable because there's all this talk over here people say well we should just have one person trained in each practice or we should go to the gynecologist or your OBGYN and I'm like hang on like also I'm 55 I've had a hysterectomy I don't need to see a gynecologist but I want my hormones balanced in the UK if my GP didn't know what to do I would be referred to a menopause clinic run by a gynecologist I don't need to see a gynecologist What a waste of their time.

18:38I'm more worried about the, you know, the hormones in my brain and my body, but I can't, you know, neurologist knows nothing about hormones. Well, that's the other issue. You're bringing up the issue of siloed care. Totally. And the problem is that hormones affect the heart. Hormones affect the brain. And so doctors should be aware of what the interactions are in the body. So that may be another issue, the siloed care, whereas I believe in a system approach to people. You have to look at a system. And not only that, I stopped using chief complaint because remember, you go to a doctor when you're sick, not when you're well.

19:14Right. And to me, it's about knowing that whole human being. So I used to find myself when I started women's health at Yale, I had been more in the research end of things and people treating women with endometriosis, infertility, fibroids, ovarian cysts, children with early and late puberty and growth issues because I was kind of a highly specialized trained in both investigational medicine as well as all fields of endocrine. In fact, at Yale, I had a triple appointment. I was in the Department of Pediatrics, Endocrine, Department of Internal Medicine, Endocrine and OBGYN. So it's very unusual.

19:50Yes. And I trained at NIH with people who were brilliant and my mentors. And one of the things I came up with is beyond patient centric thinking and care, which has become a thing in America now. I believe in getting a health story because how can I help somebody who doesn't sleep enough or doesn't eat in a way that would be helpful instead is doing too much processed or ultra processed food or doesn't exercise at all? When we know that resistance training as we get older is even more important to put muscle on with testosterone and eating enough protein. So to me, the whole story had to be unfolded almost like a book.

20:29I think I'm very curious as you are. Obviously, we chatted about that. And I'm curious about a human being and how they lived. And I think it harks back to the old-fashioned family physician who not only knew you, but knew your family. They could extrapolate if somebody showed up in their office with depression. They could say to Joan, oh, you know, your mother experienced some of this around the time she had you as a baby. So let's talk about postpartum and what you go through. It's not available, I think, any longer in our world. And that is also a huge deficit. It totally is because it's also about confidence and trust with patients as well.

21:11And, you know, I was talking to my husband recently and saying I was very lucky because I was in the same general practice for 20 years. And it was quite a deprived area, but I'd pick up where I left before. So even 10 minute consultation, I could get a lot done in 10 minutes because I knew the person. The way they walked into the room, the way they did or didn't do eye contact with me, I knew exactly what was going on. And I knew, and it's such a privilege. And also, you know what to prioritize because you know what their concerns are. Whereas it's very formulaic, guideline-driven medicine now, which doesn't prioritize the person's health in the same way.

21:51Yes, I completely agree. And I have done the similar things in parallel with you. So it's kind of fun to talk to you because I haven't met anyone who's been as so immersed in hormones for the same years that I have. And I will tell you when I screen people because they had no understanding of the work I did. So before somebody became a patient, I would talk to them. And in a way, I've reversed my path in that now we treat families. We have parents and children because of the genetic and epigenetic work I do. Once I see that somebody has genes that are at risk, for example, APOE4 or MTHFR, I can extrapolate and tell them if they see that both parents what the odds are their children would have inherited it.

22:37So I believe in inquiring and asking, for example, about relationships. One of the things I'm always curious about is family history, because to me, they're more important than genetic tests still in this day and age, because there are emergence of genetic conditions that I believe we can reverse with good choices and include medication and supplements, but the choices we make in how we live life. And one of the things I remember from years ago, it was studies out of the University of Pennsylvania. And it talked about the fact that if somebody came in with a heart attack and then went home afterwards to recuperate, if they went home to a home with a partner, a spouse or a partner, they did better than if they went home to a house that they were alone.

23:26And get this, if they went home to an animal, like a dog or a cat, it was unconditional love. they did the best. So part of the screening that you learned naturally through being a family physician, I had to back into again, as I grew the center in New York, I became a sort of new age family doctor because the whole systems, you know, your whole systems involved as well as the life you live. So the health story to me is so paramount to making decisions about how to take care of yourself as you head forward. And that's why I wrote the book, because I felt by extrapolating the data I had learned, because I did it as a protocol, the N of one, I wanted to look at what made us each unique.

24:10Why was my twin and I, even though we're identical twins, we live different lives. She's a dermatologist, as I mentioned, she loves gardening, I murder anything with roots and leaves. I can live on sushi and sashimi, she doesn't touch fish. So I have that. My mercury was sky high when I first started testing. I was actually kind of proud of it because nobody had as high a level of mercury. And now I brought it down to less right away to less than four. I have MTHFR, which is a gene that makes it impossible for me to absorb B vitamins that aren't methylated. And as a result, over 20 years ago, I had sudden sensory neuro hearing loss in one of my ears.

24:50And now I stopped that in people by diagnosing it and making sure my children don't take the they take the right kind of b vitamins so they will never face that because it also increases your risk of deep vein thrombosis early heart attack clots pulmonary embolus so um there's so much you learn as being a family doctor where you really get to know the human being and it is an honor i actually think it's the deepest trust i get i sometimes have learned about patients more than they've shared with their partner oh for sure it's such a privilege they they tell you and it was interesting I was with my daughter my oldest daughter has chronic migraine and she was having some Botox injections at Queen Square at Neurology Hospital in London yesterday and I was with her and I saw a neurology consultant come in and out and then there was a junior doctor going calling a patient in and I said to Jessica I hated hospital medicine and she said what do you mean I said this junior doctor here will never see that patient again she said what do you mean I said because her job will be six months a year she'll probably never see that patient again she'll never know whether she's got better or worse she's just doing what she thinks is best but the patient she'll never learn from but whereas when you've always got your patients coming back you individualize care and if this didn't work you try something else but you also build up this picture of who they are and what else they do and then you start to introduce lifestyle and nutrition and say supplements or whatever but you can do it in phases as well and that makes such a difference so you're building up this story and treatment pathway that it works for them I completely agree I think we've really lost something in the new age kind of world where it you in America most people change doctors every year in fact most people use urgent care so it's Exactly as you described, they have no knowledge of where that human being, what their ethnicity might tell you in terms of their diet and food and how they live life, how they experience anything in their life, because you don't get to know them.

26:57And that is an important aspect. It's not just about operating on a broken arm or leg and that's it. You're settled. It's about taking care of that human being. And to me, that's vital. so important so before we end i've got one question quick question that i'm going to ask you and i know the answer but i just want my listeners to hear from someone that's not me testosterone over here in the uk we're only supposed to give it for reduced sexual desire and some menopause societies say we can only give it if women have hypoactive sexual desire disorder and one of the one of the criteria for that is women have to be severely psychologically distressed for at least six months with their reduced libido.

27:42Would you agree or disagree that that's the only indication for prescribing testosterone for our patients? I absolutely know that testosterone is critical for memory from my own data and research, critical for the heart, the heart's a muscle, critical for bones to grow and prevent osteoporosis and fractures and things that either cause us to die or live in poor health, dependent on family or assisted nursing. I think even more important than that, and I've been asked this question and told that you need the only way you get testosterone, is I basically think every woman should just tell their doctor, if they're not lucky enough to have access to you or to me, they need to just say to their doctor, I have poor libido and this is why I'm suffering the last six months and get that prescription for testosterone.

28:35I have not seen testosterone hurt a single patient that I've treated. Now you have to manage the doses. I happen to use it as a cream, but there are pellets. I have some issues with pellets because sometimes it's too high a dose and you can't manage it so carefully. But over time, it is the most important hormone in effect or sex steward hormone because we have more testosterone circulating even as young women than we have estrogen. The estrogen goes up and down and is only elevated around ovulation. And so I look to optimize hormones. I actually don't even call it hormone replacement therapy because I'm not mother nature.

29:15So I want to look at the risk benefit. So I want to give people the benefit of it at the lowest possible dose. And that's different for every woman because of the way you eat exercise workout metabolize varies between you and me yeah totally so that was a right answer thank you very much um well thank you you would say that great work so the other thing when i'm in england are you in london it would be fabulous yeah so so the other thing before we end is i always ask my guests for three take-home tips so what i'm going to ask you is three reasons why women and healthcare professionals should think very differently about those three hormones, testosterone, Estradone and progesterone?

30:02Does it have to be effectively those three or can I enlarge it a little bit? You can, I'll let you enlarge it. Okay, and it's relevant in women because of when they're pregnant and they have oral glucose tolerance tests or minimal ones. So here's what I think. I think you can change the nature of your future health if you use a continual glucose monitor, continuous glucose monitor. You can now get it over the counter. Hormones like estrogen, testosterone, and progesterone are affected by the way sugar changes in our body. And in each one of us, genes will dictate. And there are thousands of genes that control the way sugar is interpreted in the body.

30:42So insulin is a hormone. It's very important. It affects us in terms of risk of diabetes, heart disease, stroke, skin disease, neurological disease. So that's a role that we have to think about. And continuous glucose monitors and other wearables to monitor sleep will make a huge difference. And I speak about that a great deal in my book, Invincible, Defy Your Genetic Destiny to Live Better Longer. Testosterone is critical not just for bone and maintaining bone, but for muscle and for the heart and the brain. And along with testosterone as a second tip, you need to do resistance training two to three times a week, which is weight training.

31:22You don't need to lift 100 pounds. You can lift five pounds. You can even use your own body if you do Pilates. And if you do resistance training and as a third part of that second tip, you want to eat enough protein. And in order to keep your body as healthy as it can be and manage the hormones in your body, always start a meal or a snack with protein. Protein, fat, and fiber modify the release of other hormones like insulin. And finally, get enough sleep and probably make that number one. Not just enough hours like six to eight, but the quality of sleep. And sometimes if you need to sleep greater number of hours, like 12, 13, 14, it's because you're not getting deep sleep.

32:07So there's the Apple Watch, there's Garmin, there's Whoop, there's Aura. And I think that's available to people around the globe. And that would make a huge difference. Those three areas to me are the most important approaches we can use to change the future of our health and keep ourselves vital till 120. That is so good. And it's totally, it's not so much that age at the end, it's just that whole journey and keeping as healthy as possible for as long as possible. Health span. Yeah, the whole health span. And I totally recommend people to buy and read this book and buy it for others, including your doctor too.

32:44So it's great to have you on the podcast. Thank you so much. I've really enjoyed it. You're welcome. It was great, Louise. And I did that on purpose. When you look at the book, you'll see, because I wrote a book called Keep It Up for Men in 2013, way before anybody thought of the field. obviously a play on words keep it up and but in the back of each book that i wrote in each chapter i have references to show the scientific evidence behind why i do what i do and what we should all be thinking about and learning so if only that the book should be gifted to your healthcare professional absolutely thank you so much it's a pleasure

From the publisher

Hormone treatments are often seen as a treatment to help with symptoms, but many clinicians still do not understand how they can improve our future health too.

This week, Dr Louise Newson is joined by physician, endocrinologist and longevity expert Dr Florence Comite to explore why balancing hormones is about far more than managing symptoms. Together they discuss how hormones influence every organ in the body, why healthcare should focus more on preventing diseases than treating them and why personalised medicine is key to helping people live healthier for longer.

Florence explains why the hormones estradiol, progesterone and testosterone are so important for brain, heart, bone and muscle health, why testosterone starts declining long before menopause, and how understanding an individual’s unique biology can transform the way we approach ageing.


Together, Louise and Florence discuss:

  • Why balancing hormones can reduce the risk of future disease
  • The differences between bioidentical and synthetic hormone treatments
  • Why testosterone is important throughout a woman’s life, not just after menopause
  • The lasting negative impacts of the Women’s Health Initiative (WHI) study
  • Why prevention and precision medicine should be the future of healthcare.


This conversation challenges the traditional approach to medicine and offers a powerful reminder that optimising hormones isn’t just about feeling better today, it’s about investing in your long-term health.

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