Latest / The Dr Louise Newson Podcast / 28 - How synthetic hormones can rewire the female brain
Transcript
- 0:00I hope some of you will be able to join me at my 2 remaining
- 0:03theatre dates for World Menopause Month in October.
- 0:07I'm going to be at Birmingham Town Hall with Liz Earl on the
- 0:1112th of October and on the 19th of October I'm going to be with
- 0:15Emma Barnett at the Rose Theatre in Kingston near London.
- 0:20They're live Q&A's. I'm going to be questioned and
- 0:23then your questions in the audience are going to be
- 0:26answered by me. I'm really looking forward to
- 0:29meeting some of you there. Doctor Sarah Hill is the guest
- 0:34on my podcast today. She is a researcher, she's a
- 0:37psychologist, and she's also an author.
- 0:40We talk a lot about the differences between synthetic
- 0:43and natural hormones and the impact that they can have on our
- 0:47brains, how contraceptives can have negative effects, but also
- 0:53how important progesterone is in our body and brains.
- 0:57Progesterone is still an underrated hormone, and so she
- 1:01talks a lot about it. So it's a great conversation
- 1:04that I just hope opens your mind a little bit more to the very
- 1:08beneficial effects of hormones. So Sarah, I have been stalking
- 1:15you for longer than you realise, actually.
- 1:17And you know, your work is, is wonderful.
- 1:20Obviously, you're a scientist, you're an academic and a
- 1:24researcher. And this book how the pill
- 1:28changes everything and capital P for pill, by the way.
- 1:32So this is the contraceptive pill, which has become so common
- 1:36and even quite soon after it, it was launched, people was called
- 1:39just calling it the pill like, and people know it's the pill,
- 1:43but actually do people know what it is and what it contains?
- 1:46And, and the, the, you know, it's called birth control, but
- 1:51it's not just given to prevent pregnancies.
- 1:54So there's a lot really that really resonated when I read
- 1:58this book with the way that I think.
- 2:00And I'm very interested in the role of hormones on our brains.
- 2:05I'm very interested in neurophysiology,
- 2:07neuropharmacology, neuropathology, the whole
- 2:12function of our brains, because as humans, our brain is the most
- 2:16important organ, without a shadow of a doubt.
- 2:18But it can be altered quite significantly by very small
- 2:23changes. And this is really what your
- 2:27your book really talks about really eloquently, doesn't it?
- 2:31Oh, thank you. Yeah.
- 2:32You know, our brain, it is, I mean, it's like it's what
- 2:37creates the experience of being the person that we are, right.
- 2:40And, and one of the things that it takes in to create that
- 2:43experience is our hormones. And so our hormones are, even
- 2:48though there is this tendency for us to think of them as
- 2:51something that happens to us, like, oh, you know, like
- 2:54hormonal or whatever, they're a key part of what our brain uses
- 2:59to create the experience being the person we are.
- 3:02And so when we change our hormones, that means that we
- 3:05change women. And, and this is something that
- 3:08I don't think that, you know, most people really had any
- 3:12awareness of, you know, because it's like when you take the
- 3:15birth control pill, a lot of times you're taking it for some
- 3:17specific end, whether it is contraception or whether it is
- 3:21to clear up acne. I know that it gets prescribed
- 3:24for that reason. Sometimes it gets prescribed for
- 3:29managing or or trying to, you know, stop the symptoms of
- 3:32things like endometriosis and PCOS.
- 3:37But so it's like you take it for whatever the purposes that it's
- 3:40being prescribed and, but you don't think about the fact that
- 3:43you're shutting down your hormone production, right?
- 3:47So it it shuts us down women's own hormone production and then
- 3:50it replaces it with the synthetic and, and, and of
- 3:55course that causes sweeping changes throughout the body,
- 3:58including the brain. And how did you first get into
- 4:02thinking about this and doing your research and writing about
- 4:05it? Yeah, it's funny because I spent
- 4:08most of my career just studying women and women's motivational
- 4:12state. So I'm, I'm a psychologist and
- 4:16one of the things that I had done research on and had
- 4:18published research on is, you know, the effects of women's
- 4:22naturally cycling hormones on motivational States and
- 4:26attraction and those sorts of things.
- 4:29And so I had an awareness of the fact that our hormones matter,
- 4:33right? And that women's hormones
- 4:35influence how they think and feel and experience the world.
- 4:38But I never thought twice about the birth control pills that I
- 4:42was taking every day and took for more within a decade of my
- 4:46life because I was on hormonal birth control for probably 11 or
- 4:5012 years, give or take. And I didn't really spend any
- 4:55time thinking about them at all until I went off of them.
- 4:59And then within a couple of months of going off of them, all
- 5:02of a sudden, you know, I started to recognize that I was feeling
- 5:07different. Like I was like, you know, I, I,
- 5:10I, I had been downloading new music for the first time in a
- 5:14really long time on my phone. I was going to the gym again.
- 5:18I started growing my hair out again.
- 5:21I had more energy. I was like, more interested in
- 5:24sex again. I just felt like I was
- 5:26everything felt deeper and richer and more thrusting to me.
- 5:30And I thought, oh, my goodness, like the pill.
- 5:35Yeah, you know, and, and, and it was it was my experiences where
- 5:41it was like all of a sudden I had everything click into place
- 5:45where it was like, of course, you know, I feel different when
- 5:48I go off, when I went off the pill because of course I was
- 5:51different when I was on it. And so I finally was able to put
- 5:55two and two together. And I realized that if I had a
- 5:58blind spot with a birth control pill, right?
- 6:00Being somebody who studies women's hormones and how they
- 6:02influence motivational States, and the fact that it never even
- 6:06occurred to me that my birth control would be influencing how
- 6:09I feel and experience the world, I knew that most women probably
- 6:14also didn't know this information.
- 6:16And so I went to the research literature and I dug up
- 6:20everything that had been published on the relationship
- 6:24between birth control use and women's brains and.
- 6:29And yeah, and that was the the birth of the book.
- 6:33It's, it's so interesting and, you know, like you, I took the
- 6:36pill for many years as a medical student and junior doctor.
- 6:40I didn't even think about what it was doing to my own hormones.
- 6:43And I prescribed it for many years.
- 6:45And obviously I knew that it stopped ovulation because it
- 6:48was, you know, to a contraception, but I didn't
- 6:51think that it's suppressing our own hormones.
- 6:54And so many people even now just think about, you know, women and
- 6:59periods, women in the womb, women and the hormones and our
- 7:04ovaries. And, you know, even gynecologist
- 7:07sometimes is so focused on our pelvic organs, they forget that
- 7:12hormones, including progesterone, estradiol,
- 7:15testosterone, go in our bloodstream, go to our brain,
- 7:17but they're also made in our brain as well.
- 7:20You know, they have really important roles in our brains,
- 7:23so blocking them is one thing, but then also giving a synthetic
- 7:28hormone is for some women, give gives others sort of more
- 7:32detrimental effects or side effects that can really affect
- 7:36their mood and their cognition and motivation and everything
- 7:40content. Yeah, for sure.
- 7:41I mean, you know, when you look at the birth control pill and
- 7:44the different types of side effects that are related to it,
- 7:46whether it's, you know, differences that we see in
- 7:49mental health because we see that women on the pill have an
- 7:51increased risk of developing depression and anxiety.
- 7:55We also see that women on the pill have a greater risk of
- 7:59hypoactive sexual desire disorder and some of these other
- 8:02things. When it changes sexual desire
- 8:05and it can change cognition and so on and so forth.
- 8:08In a lot of these changes, you know, it's like when we look at
- 8:12why it is that women experience these side effects, it seems
- 8:14that there's kind of two big answers, right?
- 8:17The first answer is just by shutting down a woman's hormone
- 8:21production, which is what we do when we shut down ovulation,
- 8:24because that's how female bodies make hormones is, is that causes
- 8:29its own set of side effects. Because, you know, when you shut
- 8:32down ovulation and you shut down the production of estrogen and
- 8:36progesterone, this doesn't generally feel very natural to
- 8:41women. Like it's not our bodies are
- 8:44experienced as you know, experiencing these beautiful
- 8:48rise and fall of our two primary sex hormones, estrogen and
- 8:51progesterone. And, and not experiencing that
- 8:54doesn't it's, it's a weird state to be in.
- 8:57And it can be related to things like low libido, for example,
- 9:01which is related to having relatively low levels of
- 9:03estrogen and low levels of testosterone, because
- 9:07testosterone also changes in response to the birth control
- 9:11pill. So that's like 1, you know, so
- 9:14like some of the side effects that you get are related to the
- 9:16fact that you're shutting down your own hormone production.
- 9:19And the other set, as you noted, is the result of the fact that
- 9:22these synthetic hormones are a little bit funky.
- 9:26And in particular the the progestins that are in hormonal
- 9:32birth control are not biologically identical to
- 9:35progesterone. And progesterone has a number of
- 9:40qualities that are really lovely to the brain and and to the rest
- 9:46of the body. And when progesterone is being
- 9:49metabolized and broken down in the body, it releases this
- 9:52really powerful neuro steroid called allopregnanolone.
- 9:57And it does things like help increase neuroplasticity.
- 10:01It helps to stabilize mood. It's anti it, it's like anti
- 10:06anxiety because it has this really calming effect on the
- 10:09brain. It it's, it's part of how the
- 10:11brain is able to regulate emotional states.
- 10:15And naturally cycling women when they release progesterone are
- 10:20able to get all these really beautiful benefits of
- 10:23allopurignanolone because again, when this is something that's
- 10:27released when progesterones being broken down in the body
- 10:31and when you're taking the birth control pill, which contains
- 10:34these progestins, which are most of which are synthesized from
- 10:39testosterone, right? So they're not synthesized from
- 10:41progesterone. They're made out of
- 10:43testosterone. When they get broken down in the
- 10:45body, they don't release allopurganolone because they,
- 10:48they, you know, they're not, that's, they're not, that's not
- 10:50what they're made of. And in SO research finds that,
- 10:55for example, that women who are on the pill have much lower
- 10:58levels of allopurinolone, which is probably also then, you know,
- 11:02contributing to some of these side effects like mental health
- 11:04problems, anxiety, feeling overwhelmed and unable to
- 11:08regulate stress. And so like you, you get some
- 11:12side effects like those, for example, that are the results of
- 11:14the fact that these progestins are not biologically identical
- 11:19to to progesterone. And you also get some weird
- 11:24things where, you know, these progestins because they're
- 11:27synthesized from testosterone and they're just kind of
- 11:30monkeyed with. So that way they'll also get
- 11:32picked up by progesterone receptors.
- 11:35Sometimes these hormones will still continue to stimulate
- 11:39testosterone receptors. So it can lead women to
- 11:42experience things like hair growth, like facial hair growth
- 11:46and some other types of side of or losing their hair because of
- 11:50their testosterone receptors being stimulated by these
- 11:53progestins. And they've also found that some
- 11:56of these progestins like to stimulate glucocorticoid
- 11:59receptors. And so these are cortisol
- 12:01receptors, which essentially makes your body think that
- 12:04you're going through a stressful event because it's it's
- 12:07activating that cortisol pathway.
- 12:09And, and so this also can contribute to feelings of
- 12:13extreme anxiety and, and overwhelm and ultimately mental
- 12:18health, you know, mental health related issues.
- 12:20Yeah, and it's so important. I did a recorded a podcast
- 12:24recently with my middle daughter and she talks a lot about her
- 12:28friends. And I see it a lot.
- 12:30And I've seen it a lot over the years as AGP as well, that
- 12:33people have started on contraception, whether it's the
- 12:36the pill or whether it's an injection or an implant of a
- 12:41synthetic progestogen. And then they'd go on
- 12:44antidepressants. And, you know, it's this
- 12:47downward spiral and no one sort of really associates the two
- 12:50together, but it can really have such an effect.
- 12:54And, and a lot of people just feel very flat, very joyless,
- 12:57very demotivated. And then, you know, I see so
- 13:01many women who've tried 345 different types of contraception
- 13:06and they all have different side effects and no one's really
- 13:10thinking about what's going on. And, and I certainly didn't
- 13:14either. I mean, I was taught at medical
- 13:15school that the contraceptive pill can reduce libido, but
- 13:18don't worry about that because young girls have high libido
- 13:21anyway, which is like, it's just awful actually.
- 13:24Like why can't they enjoy their high libido?
- 13:27Like, it just seems like really terrible.
- 13:30But then if they're on an SSRI, an antidepressant, they're
- 13:34likely to have even more problems with low libido, which
- 13:38is like a double whammy for these poor people.
- 13:41And so I think there's one thing like not having your hormones,
- 13:46but there's another thing having a synthetic hormone that's
- 13:50altering the way that your brain and body and stress response
- 13:53work because it's hard enough for a lot of people just growing
- 13:58up, but to have these chemicals and then people aren't aren't
- 14:01putting the two and two together.
- 14:03Yeah, no, totally. And increasingly, you know,
- 14:05they're being used like you say, for for acne.
- 14:09Now, there are lots of other reasons why people get acne.
- 14:12It's not just their hormones. And if it is a hormonal
- 14:14imbalance, then we should be thinking about the natural
- 14:17hormone imbalance, not giving some something synthetic as
- 14:20well. So I just think it's really
- 14:24important that we know this difference and and look at the
- 14:27science because there is a lot of science and evidence.
- 14:30It's just been ignored actually for for many years.
- 14:33But also thinking about humans being ignored like you talked
- 14:37about progesterone and how important progesterone is.
- 14:42And I think this is a really, really under recognised under
- 14:46spoken about hormone because people always think that
- 14:50estrogen is the female hormone, testosterone is the male
- 14:53hormone, which absolutely is wrong.
- 14:55But progesterone is just something to protect the lining
- 14:58of the womb if you're on estrogen.
- 15:00And I didn't really know too much about progesterone and when
- 15:04I was like growing up as a junior doctor, But it's so
- 15:08important because it's actually progesterone is the precursor,
- 15:13if you like, for testosterone and estradiol, but also for our
- 15:18cortisone and cortisol. So you know, that help with
- 15:21inflammation, but like you said before, stress.
- 15:24So I know you've written a lot. I've got a copy.
- 15:27I haven't got the beautiful copy, but I've I've because
- 15:29it's, it hasn't come out yet. It will when we do the put the
- 15:33podcast out the period brain, which is your your other book.
- 15:37And you talk a lot about the power of progesterone in this
- 15:42book and it, you know, just to explain a bit about why
- 15:46progesterone is so important. As you noted, culturally we tend
- 15:52to think about women and, and that their sex hormone is
- 15:55estrogen, right? It's like men have testosterone,
- 15:58women have estrogen, and then that's the only hormones that
- 16:02matter. But that's just not true.
- 16:05As noted, you know, it's women have two primary sex hormones,
- 16:09right? We have estrogen and
- 16:10progesterone. And the reason that we have two
- 16:13primary sex hormones is because our bodies have to do 2
- 16:16different jobs to reproduce, right?
- 16:18So men's men only need to do one job for reproduction and that's
- 16:21have sex, right? And so they've got one sex
- 16:24hormone. Women have to have sex, right?
- 16:26And we have a hormone for that and that's estrogen.
- 16:29And when we are at a point in the cycle when sex can lead to
- 16:33conception and estrogen is being released, it orients our brain
- 16:37and our body to do all the things that are necessary in
- 16:40order to attract mates and have sex, right?
- 16:43It increases libido. It makes us smell better, sound
- 16:48better, look better to men. It makes us more sexually
- 16:52interested. And it it sort of gets all of
- 16:54our body marching, you know, in the direction of wanting to do
- 16:58things that are going to lead to conception, right?
- 17:01And so that's what estrogen does.
- 17:03But women's bodies also have to do a second thing to reproduce,
- 17:06and that is get pregnant, right? And so allow for an embryo to
- 17:09implant and then get pregnant. And so we need a second sex
- 17:13hormone that whose job it is to coordinate the body and get
- 17:17everything marching together in that direction.
- 17:20And that's what progesterone does.
- 17:21It shifts our body and our brain from being in, you know, in a,
- 17:26in a state that's optimized for sex and attraction.
- 17:32And it shifts us into a state that is optimized for
- 17:35implantation and pregnancy. And this, you know, creates a
- 17:39whole cascade of changes within the body and within the brain.
- 17:42And so it does things like, for example, because we're having to
- 17:47build and differentiate the cells in the endometrial layer,
- 17:51this raises our metabolism, right?
- 17:53So women's metabolism increases by like 8 to 11%, which means
- 17:57that we need more calories during this part of our cycle
- 18:01than we do during other parts of the cycle.
- 18:03It shifts our immune system away from a pro inflammatory to an
- 18:08anti-inflammatory state to help allow implantation of
- 18:13implantation of an embryo without having the immune system
- 18:16go crazy and try to attack it, right?
- 18:18It changes the threshold by which our brain sort of detects
- 18:23danger and makes us more cautious.
- 18:26So it's like our brain is quicker to alert danger signals
- 18:29because, again, this is a hormone that's getting our body
- 18:33and our brain oriented toward, you know, things that will help
- 18:38promote a successful pregnancy. And because pregnant pregnancy
- 18:42is a time that's very vulnerable for women, they're more
- 18:44vulnerable to their environments.
- 18:47It does make us more alert to the possibility of social
- 18:50dangers and also physical dangers.
- 18:52And so women tend to notice more things that can potentially be
- 18:57threatening even within the context of their relationships
- 19:00and sometimes even especially in the context of their
- 19:03relationships. Because, of course,
- 19:04historically, women have been very dependent on men in their
- 19:08provisioning ability to promote a successful pregnancy.
- 19:11And so women are attuned to threats so that way they can be
- 19:14able to better address them. Right?
- 19:16We experience changes in libido where libido actually decreases
- 19:20in that phase in the cycle because we, you know, pregnancy
- 19:24is not possible from sex or conception is not possible from
- 19:28sex. And sex is, you know, it creates
- 19:31A physiological inflammatory response in the, you know,
- 19:35cervix and, and vaginal area in response to foreign material.
- 19:39And that can be suboptimal for implantation.
- 19:42And so, you know, women experience this whole shift that
- 19:46that occurs as we as our bodies are transitioning from the state
- 19:50optimized for attraction and sex and then moving into the state
- 19:53that's optimized for implantation and pregnancy.
- 19:56And not really having any discussion of this, right?
- 20:01And not understanding what progesterone does.
- 20:05And you know, and it does have these like really beautiful
- 20:08anti-inflammatory effects within the body.
- 20:11It's got anti-inflammatory effects within the brain.
- 20:13It increases neuroplasticity. It does all kinds of really
- 20:17wonderful things. Not, but not having, you know,
- 20:21any awareness of the fact that our body is shifting gears.
- 20:27In that sometimes the things that we need to do, like we need
- 20:30to change the way that we treat ourselves.
- 20:31Like for example, we do need more calories in the second-half
- 20:35of the cycle than the first because our metabolism increases
- 20:40that can make us feel awful. And so a lot of, you know, what
- 20:43women tend to think of as like, you know, PMS and, and feeling
- 20:47bad in the second-half of the cycle.
- 20:49A lot of that is the result of, you know, just not acknowledging
- 20:55that like our bodies needs change, right?
- 20:57So, for example, if you're not eating enough because because
- 21:00you've been told you should have X number of calories in a given
- 21:03day, and then you're in the second-half of the cycle when
- 21:06your calorie needs are higher, you're going to feel like you
- 21:09have food cravings and that you're hungry and in that you're
- 21:12grumpy and that you're tired because you're not eating
- 21:15enough, right? And that if we understand that
- 21:18the rules for our bodies change and then we treat ourselves, you
- 21:22know, we do the things that we need to do to best take care of
- 21:24ourselves during this time, I think that a lot of women can
- 21:26feel a lot better. And then the other answer is,
- 21:29you know, kind of getting at something that you had touched
- 21:31on, and that is that in our current environment where people
- 21:36do have more sedentary lifestyles and they're eating
- 21:39more processed foods and they don't have the large social
- 21:42support networks that humans really thrive under.
- 21:46All of these things can erode our, our, like our cellular
- 21:53plasticity and our resilience to hormonal changes because, you
- 21:58know, as we experienced big hormonal changes, it can, some
- 22:03women, women are very sensitive to those hormonal changes and it
- 22:06makes them feel terrible. And these are the women who have
- 22:10really severe PMS and PMDB often times because the luteal phase,
- 22:15which is the, you know, the second two weeks of the cycle,
- 22:17it's characterized by larger hormonal swings than what we see
- 22:21in the first half of the cycle. And so women who are sensitive
- 22:25to hormonal changes, it can make them feel out of sorts.
- 22:30And in, in one of the reasons that we see so many women with
- 22:34hormonal sensitivity is because there are a lot of things in our
- 22:38environment that really do erode our, our resilience to those
- 22:43hormonal changes. Because it shouldn't feel like
- 22:46falling off a Cliff, you know, as your hormones are changing.
- 22:50Instead, it should feel more like riding a wave.
- 22:52Yeah. And some people are just a lot
- 22:55more sensitive to these changing hormone levels.
- 22:58Like you say, in the luteal phase, the second-half of the
- 23:00cycle, we get a really big peak in progesterone, far higher than
- 23:04estadiol. And then it does drop quite
- 23:06quickly before people have their periods and some people really
- 23:11very sensitive to the changing levels.
- 23:14And we see that a lot obviously in perimenopause as well, when
- 23:17hormones can shift a lot. And a lot of people think it's
- 23:21all Easter dial that's shifting and changing, but aren't
- 23:25thinking about the progesterone as well.
- 23:27Yeah, No, it will. It's what's kind of interesting
- 23:30is that when you look at the research literature, it seems to
- 23:33show that, you know, people who are sensitive to hormonal
- 23:36changes in within their cycle are also the ones that are at a
- 23:41greater risk of developing depression.
- 23:44And they're also the ones who are at, at, at the greatest risk
- 23:47of experiencing depression during perimenopause.
- 23:51And so, you know, there are people, right?
- 23:54If you're one of those people who has that sensitivity to
- 23:58hormonal changes, that's like really important to know because
- 24:01you do need to build an extra support for those big transition
- 24:05times like postpartum and and paramenopausally.
- 24:11Yeah. And we we see this a lot.
- 24:12Obviously I I see a lot of perimenopause that are
- 24:15menopausal women, but I'm increasingly see lots of younger
- 24:18women in my clinic. But what really saddens me is
- 24:21that I see a lot of women with quite severe, often very severe
- 24:25mental health history who've been under psychiatrists for
- 24:28many years. And when I take a really
- 24:30detailed history from them, and these are now menopausal women.
- 24:34When I say to them, how did you feel when you were having your
- 24:37periods? Did you feel any difference
- 24:40throughout your, your menstrual cycle?
- 24:41They'll say, Oh yeah, just before my period.
- 24:44It was just awful. And then my period came and I
- 24:46would just get a bit of break and it would be like night and
- 24:49day the difference. And then I, if they've had
- 24:53babies, I always say to them, how did you feel when you were
- 24:56pregnant? And they would grin from ear to
- 24:58ear and say, do you know what? It would be the best time.
- 25:01I would wish I could have that time again.
- 25:04But then they've often had post Natal depression or psychosis
- 25:09and often didn't want to talk about it to anyone because they
- 25:12were scared their babies would be taken away from them, so
- 25:15they'd often not gone for treatment at all.
- 25:18And then when you realise these big hormonal shifts that occur,
- 25:21especially postpartum, it's so obvious that it's related to
- 25:25hormones, especially progesterone.
- 25:27But I can't find any guidelines that say that we should be
- 25:30giving progesterone to women who have post Natal depression.
- 25:34It's always the antidepressants and it just doesn't feel right.
- 25:38Right. No, I mean, and, and there is
- 25:40some research now because of course they've found a
- 25:44patentable product that is, that is, it's, it's essentially
- 25:50alopregnanolone. It's, it's like A and, and, and
- 25:53so they're, they're using that for, for post Natal depression
- 25:57and, and it seems to be working pretty well.
- 26:00And but, you know, that's like the end product of progesterone.
- 26:04And it's a lot more expensive, right?
- 26:06And like, why not just give the hormone?
- 26:08Right, Exactly. Yeah, Like yes, yeah, no
- 26:11progesterone is it is. It's so funny because it's so
- 26:15underappreciated. And I just learned for the very
- 26:18first time that most women or most doctors who treat women and
- 26:23are giving them hormones for, for perimenopause and menopause,
- 26:30that they only give them like progesterone if they have a
- 26:34uterus. And then and that they're doing
- 26:36it because, you know, they they want them not to get over
- 26:40proliferation within the uterus. But and and and it floored me to
- 26:46learn that and and so. Did you not realize that?
- 26:48That's really interesting. No, I didn't.
- 26:51No, I had no idea. I'm like, how in the world?
- 26:53Like why in the world would a doctor think that this only
- 26:57matters for the uterus? What?
- 26:58Isn't it interesting? Yeah.
- 27:00Somehow estrogen effects everything but that.
- 27:03Progesterone only affects the uterus.
- 27:06I mean, it's like. Yeah.
- 27:08Well, you see, this is where like as doctors, we're blinded
- 27:11because because I was always taught that.
- 27:13I was taught you only give progesterone if a woman has a
- 27:15womb. And so if you, if you're taught
- 27:17it, that's it. You don't question it, you just
- 27:19do it. And that's what a lot of the
- 27:21pathways and guidelines say. But then recently, obviously,
- 27:24I've read a lot more about progesterone.
- 27:26I've read Physiology, you know, basic things I should have known
- 27:29for many years. And so now we do give
- 27:31progesterone to women who've had a hysterectomy or if women have
- 27:34a Marina coil in, you know, and an IUS that's a coil that
- 27:39contains synthetic progesterone. I'll often give progesterone as
- 27:42well because it will get into the blood and go to the brain.
- 27:45Everything else. And most weeks I get letters
- 27:47from doctors to my clinic to say, how dare you prescribe
- 27:50progesterone. This isn't in the guidelines.
- 27:53We don't have evidence. And it's like, well, hang on,
- 27:55It's a basic hormone. It's it's really interesting
- 27:58that common sense often than is forgotten in medicine.
- 28:02Yeah, no, that's, that's crazy. And and I think that you're
- 28:05ahead of your time on that. And I think, but I think it's,
- 28:07it's smart. So we're actually doing this
- 28:09study right now where we're going to be looking at
- 28:11supplementing micronized progesterone to women on
- 28:15hormonal birth control to see whether or not we can minimize
- 28:19some of these unpleasant effects that women get from it.
- 28:22Because I there. Is yes.
- 28:24It's very interesting. I bet I.
- 28:26Bet that that's true. Yeah, no, you're, you're ahead
- 28:29of your time. I'm I'm, I'm impressed.
- 28:31I think that's, I think that's great.
- 28:32I love that you're doing that. Yeah, well, I just, you know, I
- 28:35suppose in medicine I'm quite inquisitive, but you always just
- 28:38look at the reason. And, you know, I don't want to
- 28:40put sticking plaster on things for patients.
- 28:42I don't want to be giving them antidepressants if they don't
- 28:45need to. So I think, you know, working
- 28:48with people who a scientist and thinking beyond the box is
- 28:52really, really important. And you know, the birth control
- 28:55has been out for decades, progesterone we've known about
- 29:00for nearly 100 years. And I feel like the conversation
- 29:04is only just beginning, really. So, so I'm really grateful just
- 29:08have the opportunity to talk to you.
- 29:09So and, and I really wish you a lot of luck with the book
- 29:12because I think it's going to help people to understand a bit
- 29:14more about our natural hormones and why we are who we are and
- 29:19what shape us, but also what we can do if we're struggling.
- 29:22The big message is really talk to someone who understands
- 29:24hormones as well. But and so before I end, there's
- 29:28always three take home tips, but I would just like to ask you
- 29:32three things about progesterone that you think everybody and men
- 29:37as well, because men produce progesterone.
- 29:39So three things that we should all know about progesterone as a
- 29:42hormone in our bodies. OK, so #1 is that it doesn't
- 29:46make you feel bad. I think that a lot of people,
- 29:49because progesters, those horrible, you know, those
- 29:53synthetics and birth control make people feel so awful that
- 29:57they assume that progesterone and, and, and because, you know,
- 30:00women do sometimes experience PMS and PMDD, they think that
- 30:04that progesterone is this like feel bad hormone and, and it's
- 30:07just not. And so that's one.
- 30:10Number 2 is that progesterone matters for cells in the body
- 30:14that are outside the uterus, including the brain #3 is that
- 30:20progesterone is beautifully, wonderfully anti-inflammatory
- 30:25and neuroprotective. And so it has all of these
- 30:28really wonderful, these wonderful characteristics in the
- 30:32body in terms of being anti-inflammatory and sort of
- 30:35orienting you more toward an anti-inflammatory response.
- 30:38In fact, it's even been argued that one of the reason that
- 30:41contemporary women have so much autoimmune disease is because
- 30:45our ancestors spent so much time pregnant that they were
- 30:49constantly having this really powerful break on the very
- 30:53inflammatory female immune response.
- 30:55And that lacking that break is the reason that we're seeing
- 30:58this, these, these types of inflammatory diseases in women.
- 31:02So it's beautifully power, beautifully anti-inflammatory
- 31:05and it is neuroprotective. It's it's used in traumatic
- 31:09brain injury to actually prevent people from getting brain damage
- 31:12from excitotoxicity. And so it's like got these
- 31:15really beautiful effects within the brain and the body.
- 31:18Amazing. Thank you so much for sharing
- 31:21some of your knowledge and it's been great connecting with you,
- 31:23so thank you so much. Yeah, thank you for having me.