back to indexNutrition & Supplementation for Female Fertility | Dr. Natalie Crawford & Dr. Andrew Huberman
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- I mean, are there things that people should eat 00:00:03.920 |
and not eat, things that people should supplement 00:00:06.280 |
and not supplement in order to optimize their fertility? 00:00:11.280 |
- I mean, this is definitely an interest of mine, right? 00:00:13.080 |
All my fellowship research cycles around fecundability 00:00:19.140 |
by how medicine really is categorized by organ systems 00:00:29.560 |
and your body and especially your hormones change 00:00:47.020 |
and also when it comes to egg and sperm quality. 00:01:13.540 |
and therefore can impact egg and sperm quality 00:01:16.500 |
because sleep is when you have cellular repair 00:01:18.740 |
and when you can drop your inflammation levels. 00:01:21.100 |
We know that inflammation is just toxic to eggs and sperm. 00:01:27.060 |
The inflammatory environment is not ideal for conception. 00:01:39.160 |
or what you're exposed to impacts your uterine environment. 00:01:55.040 |
that we put in our body is consistently shown 00:02:10.520 |
Now, the big caveat is that nutrition studies are super hard 00:02:15.000 |
because people who consume flax, for example, 00:02:22.000 |
that sometimes make it hard to identify what flax did 00:02:26.960 |
versus somebody who eats fast food every day. 00:02:30.960 |
So nutrition studies tend to be observational, 00:02:46.000 |
that makes both of these a little bit difficult. 00:02:48.680 |
And so they're all cohort-based or population-based studies 00:03:01.040 |
Diets high in fruits and vegetables are good for you, 00:03:21.600 |
especially when it comes to vitamins and antioxidants 00:03:24.160 |
that can be extremely beneficial in decreasing inflammation. 00:03:35.000 |
or you're gluten intolerant, you're a different category. 00:03:39.600 |
and people eliminating grains as a food group overall. 00:03:49.940 |
likely because of inflammation being the primary driver. 00:03:58.520 |
and I transfer that embryo into somebody who's overweight, 00:04:21.760 |
So fruits, veggies, whole grains are all good. 00:04:31.160 |
but what we do see is that if you're gonna have dairy, 00:04:34.680 |
have the real thing, the processed dairy, the skim milk, 00:04:44.560 |
to make it still look like milk when you take out the fat 00:04:53.200 |
but when I was a teenager, I drank half and half. 00:05:00.360 |
I wasn't trying, at that age, I wasn't trying to at all, 00:05:11.960 |
- Yogurt, yeah. - Half and half yogurt, okay. 00:05:15.320 |
Choose the actual one that comes with some of the milk fat. 00:05:37.000 |
Fat and cholesterol are the backbone for all hormones, 00:05:40.360 |
right, so you need that in order for your body 00:05:45.680 |
that it needs to allow this whole process to happen. 00:05:49.040 |
And so there's this idea that those are bad for you. 00:05:52.840 |
So healthy fats, whole grains, fruits, veggies. 00:05:58.680 |
I'm a big fan of sustainably raised meats, if possible. 00:06:03.680 |
Some people choose not to eat meat, but fish, eggs. 00:06:19.920 |
Tofu does not negatively impact fertility, even in men. 00:06:24.640 |
because it does have some antioxidant-like properties, 00:06:28.480 |
When it comes to fish, fish are fantastic sources 00:06:35.040 |
which are very crucial in the reproductive process. 00:06:41.080 |
having too much fish and overexposure to mercury 00:06:44.160 |
and how that can impact fetal brain development. 00:06:46.780 |
So the general recommendation is three servings per week. 00:06:51.160 |
- Let me guess, a serving is like four to six ounces, 00:06:52.760 |
as opposed to like a real human that eats, you know. 00:06:55.840 |
- Yeah, that eats, you know, six to eight ounces of fish. 00:07:08.520 |
if you're going through things like egg freezing or IVF 00:07:11.160 |
and you know when you're going to be pregnant, 00:07:13.400 |
I wouldn't feel like you have to restrict yourself 00:07:15.520 |
on the consumption of seafood during those time periods 00:07:20.480 |
because really the concern is about that mercury 00:07:23.240 |
and what it could potentially do to a fetal brain. 00:07:29.160 |
And that's mostly because of the risk of infectious disease 00:07:32.080 |
that can cause severe brain development and other issues. 00:07:47.480 |
Tell us, don't tell us the story of the conception, 00:08:00.060 |
Are you distinguishing now red meat and chicken? 00:08:07.800 |
to the agreement that processed meats are not good 00:08:19.880 |
- So yeah, but in specifically those things like the bacon 00:08:23.040 |
and like the things that are really highly processed, 00:08:26.440 |
hot dogs, sorry, the 4th of July hot dog picnic. 00:08:38.200 |
For the most part, red meat when isolated individually 00:08:41.880 |
in most circumstances in moderation tends to be fine. 00:08:59.640 |
and looking at embryos and the more servings, 00:09:02.620 |
a lot of nutritional studies based things on quartile. 00:09:09.540 |
And people who ate in that top quartile of red meat 00:09:13.120 |
had lower progression of embryos through the culture. 00:09:22.880 |
- Do we know anything about how that meat was arriving? 00:09:26.800 |
- Are we talking about like hoagie sandwiches? 00:09:29.460 |
- Or are we talking about like grass fed steaks? 00:09:32.480 |
but that doesn't mean that they don't hold merit 00:09:36.480 |
But no, that one was how many servings of red meat 00:09:42.840 |
Does the really ethically sourced, the grass fed, 00:09:46.520 |
this environment which we feel like is much less toxic 00:09:50.800 |
than potentially, let's say like a cattle factory 00:09:53.080 |
where the cows are injected with all sorts of things. 00:10:00.080 |
If this cow is getting injected with a lot of hormones, 00:10:04.580 |
the meat that you're then ingesting into your body? 00:10:16.200 |
you breathe in the air somehow are not the air 00:10:41.920 |
And I think it's really just lack of education and awareness 00:10:51.720 |
Your doctor never talks to you about nutrition. 00:10:54.760 |
And so it just became this idea that it must not matter, 00:10:58.840 |
otherwise your doctor would talk to you about it. 00:11:01.700 |
I think sugar is the last thing I just didn't mention, 00:11:03.480 |
but added sugar and artificial sugars are bad for you. 00:11:10.920 |
- Including stevia, so plant-based low-calorie sweeteners. 00:11:26.040 |
And then they also can cause a stress reaction 00:11:29.400 |
and they can cause higher rates of miscarriage 00:11:33.440 |
when you intake more sugar and artificial sugar. 00:11:48.160 |
It's the choices that you make every single day 00:11:51.280 |
that are going to set you up to be your healthy self or not. 00:12:02.520 |
And if that added helps you get pregnant when you want to, 00:12:06.680 |
helps you have a better chance of success with IVF, 00:12:17.320 |
as long as you've set yourself up on the day-to-day 00:12:20.240 |
where you're giving your body lots of nutritious food 00:12:25.840 |
Similarly, being very underweight and calorie restricting, 00:12:29.540 |
we all know is really terrible for your reproductive system 00:12:32.440 |
and can cause the brain to totally shut down ovulation 00:12:35.240 |
because it senses that you can't have a pregnancy. 00:12:43.600 |
does the body, like I learned some years ago, 00:12:49.480 |
that one of the signals for the onset of puberty in females 00:12:52.280 |
is that leptin hormone is secreted from body fat 00:12:56.720 |
that then signals to the brain, to the hypothalamus, 00:12:59.520 |
like, okay, there's enough reserves to create environment. 00:13:05.800 |
- Yeah, there's enough extra fat to have a baby. 00:13:07.320 |
- Yeah, and there's presumably enough food around 00:13:11.300 |
Are miscarriages and lack of body fat correlated? 00:13:21.040 |
we see decrease in getting pregnant per month 00:13:43.680 |
'cause you're not getting pregnant in that circumstance. 00:13:45.860 |
But certainly, ovulation disorders are on a spectrum 00:13:48.660 |
where you go from a perfectly synchronized cycle 00:13:51.360 |
to one that prolongs it, gets shorter together, 00:14:15.700 |
yet allow it to eat away at the side of your uterus 00:14:20.580 |
But that requires a very specific hormonal environment 00:14:31.140 |
None of that's really new news for most people. 00:14:34.660 |
- Well, I think some, but I do wanna thank you 00:14:42.900 |
some red meat, yes, not excessive amounts of red meat. 00:14:49.460 |
whole fat milk products, grains, fruits, vegetables. 00:14:53.940 |
what to you seem like straightforward directives 00:15:02.840 |
in these kind of elimination diet type things. 00:15:04.820 |
Like eliminate all the grains or eliminate all the meat 00:15:12.660 |
that like most people out there are omnivores 00:15:15.540 |
and they can make better choices about not deli meat. 00:15:21.620 |
Like you can make better choices on the day to day. 00:15:35.580 |
And I will say supplements and herbs are different things. 00:15:42.140 |
but many companies are adding herbs to their supplements 00:15:44.740 |
and that can get into really murky territory, 00:15:47.580 |
especially when it comes to how some of these herbs 00:15:50.140 |
do have estrogen and progestin like properties 00:15:55.300 |
- And perhaps even androgenic properties too. 00:15:56.980 |
- Yes, so we can't act like everything's created equal. 00:16:01.960 |
if I recommend you take a supplement or your doctor does, 00:16:05.180 |
your due diligence is to look at what is also included 00:16:08.260 |
and make sure it doesn't have these extra added things 00:16:13.100 |
because sometimes they can have negative impact 00:16:19.460 |
Certainly, a prenatal vitamin, which has folic acid, 00:16:22.380 |
we all know that folic acid is really important 00:16:28.740 |
and how the ovary is growing follicles and growing eggs. 00:16:48.160 |
and that is a store that needs to be built up 00:17:01.080 |
So I recommend anybody who's in their reproductive years, 00:17:05.860 |
We also know that many, many people are vitamin D deficient 00:17:13.660 |
And so I usually say 1,000 international units of vitamin D 00:17:34.260 |
Omega-3 fatty acids, also extremely important 00:17:47.660 |
but if they don't, I recommend a patient take those. 00:17:54.420 |
There's a laboratory up at the University of California, 00:18:01.900 |
which is just about one indirect measure of brain health, 00:18:05.100 |
but brain weight at birth seems to be correlated, 00:18:18.340 |
And there's mice studies about that mice are smarter 00:18:23.180 |
when they have diets with omega-3 fatty acids 00:18:28.740 |
So the exposure and the time period is really important. 00:18:32.820 |
when it comes to their antioxidant properties, 00:18:43.740 |
- We're definitely gonna talk about your work 00:18:45.220 |
after baby has arrived and impact of essential fatty acids, 00:18:50.780 |
On this podcast before, I've sort of thrown out numbers, 00:19:05.220 |
Is it truly that, let's say up to four grams per day of EPA, 00:19:19.540 |
You know, when I give my handout to my patients 00:19:22.620 |
it's gonna have a prenatal, 1,000 IUs of vitamin D, 00:19:38.900 |
across the body in a lot of different ways, right? 00:19:41.620 |
Like CoQ10 is used in a lot of different areas of the body. 00:19:46.220 |
when it comes to meiosis and cell division and ovulation 00:19:52.740 |
there's a place for CoQ10 showing benefit without harm, right? 00:20:00.100 |
nothing's without any harm or any risk of harm, 00:20:02.860 |
So I usually recommend if you're trying to get pregnant 00:20:12.900 |
Often prenatals now have just like 200 total in it. 00:20:22.860 |
- Just enough so they can put it on the label. 00:20:36.300 |
I mean, absorption of medication is really depending a lot 00:20:41.300 |
But the number one issue with supplementation