Doctor's Note

Minimizing dairy, our nation’s #1 source of saturated fat may be a good idea for dads too: Dairy Estrogen and Male Fertility.

What about the endocrine-disrupting xenoestrogens–how do they compare with the natural hormones in our food supply? That was the topic of my last video: Estrogen in Meat, Dairy, and Eggs.

Then once they’re born, best to stick to human milk:

Then as young children, dairy can sometimes cause another problem: Childhood Constipation and Cow’s Milk

Here’s a selection of other pregnancy-related videos:

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  • Veganrunner

    Good morning,
    This seems to be a video about IBD not twin pregnancy. Whoops.

    • Toxins

      Are you sure veganrunner you watched the right one? I just watched it and it doesn’t seem to have anything to do with IBD.

      • Scot Ciansota

        Vegan runner is correct. There must be a messed up link or something

        • What is everyone else seeing?

          • brec

            I’m seeing the intended video:
            Why Do Vegan Women Have 5x Fewer Twins?

            As long as I was requested to comment, here’s the smallest typo ever: grocer’s apostrophe in the first sentence of Doctor’s Note (“dad’s”).

          • Fixed–thank you!

          • Veganrunner

            Hi Dr Greger
            On my iPad it is showing IBD. It is a great video!

          • Wegan

            It started out right, then it started talking about fiber and Crohns. Then I started it over and it was the right one.

          • Thea

            Dr. Greger: For what it’s worth, I’m seeing the correct video – the one that matches the transcript. Maybe the problem, whatever it was, has been fixed?

          • On the iPad we are seeing the video on IBD.

        • Toxins

          That’s weird, I am seeing something completely different. What I am seeing is the correct video regarding twins and estrogenic compounds and animal flesh. I am not sure what technical issues could be causing the discrepancy.

          • Scot Ciansota

            Weird. I’m still seeing the fiber and Crohn’s disease video. I’m on an iPad too as others have mentioned. I have no idea what could be causing this, sorry. I’ll have to watch on a computer instead!

    • Brite

      Hi VR! What is “IBD”, please?

      • Brite

        Forget my question, I found the answer on Google.

        • For the benefit of others…

          IBD = Inflammatory Bowel Disease

          • Brite

            Thanks MacSmiley!

  • BB

    This video is timely for me. My mother-in-law who has eaten a terrible diet with tons of dairy products especially during later years (gallons of ice cream) has been diagnosed with reproductive cancer. Her counts were incredibly high and doctors are not sure how much cancer, where it actually is or where it has spread. She has had poor health for years with diabetes, heart disease and obesity. Even at 83 years and a weaken condition, she is scheduled for chemo and surgery. Not a word about diet was mentioned by her current doctors or the doctors who have been treating her chronic health problems.

    • Matthew Smith

      For cancer, this site would recommend not smoking and a plant based diet. They would also recommend exercise or losing weight (fengreek pills are effective at losing weight). They would also recommend apples, cranberries, lemonade, cloves, tumeric with pepper, ginger, rosemary, broccoli, spinach, carrots, beets, collards, kale, chamomile tea, hibiscus tea, dandelion tea, matcha tea, white tea with lemon, pecans, walnuts, and peanuts. Dr. Greger might recommend she take flax seed meal as he does his breast cancer patients. Other than flax seed, their are some super cancer foods, like black beans, strawberries or black raspberries, pomegrantes or goji berries, amla, and nori. For diabetes, this site recommends amla, flax seed meal, cinnamon, whole grains, beans, hibiscus tea. For heart disease this site recommends beans, walnuts, whole grains, a vegan diet, pure cocoa and exercise. Beans, cocoa, nuts, green tea, whole grain, berries, fresh fruit, vegetables are recommended for long life. Good luck to your mother. Ginger and lemon balm mint could help mitigate the negative effects of radiation chemo. Praise to her long life.

      • BB

        Thanks Matthew. When we visit, we will try getting her to eat some healthy stuff, but she is resistant. She wants her dairy products! That is the reason she is in such poor health and facing the cancer treatment. Hopefully, she will be a little more open-minded and let us make her some good food. The Ginger and lemon balm is a good tip….Thanks!

    • fred

      The typical SAD diet and a larger boomer population means means the money gravy-train is coming for the established medicine crew. If it was me…since I subscribe to several alt health newsletters (I’m an honorary MD…LOL) I’d just eat lots of veggies…enjoy what time I had left…and tie up some loose ends….take some pain meds. From what I read…chemo/radiation is a miserable way to go….and for what? Sad to say that we’ll all have some difficult decisions to make towards the end. I suspect that those who have subscribed to the corp/govt controlled reality matrix will have it a bit rougher.

      • Matthew Smith

        This is very true! Medicine is going to lose many Americans, Doctors, and money in the millions of deaths that are happening and will happen every day for the next decade (it’s statistical the mean age of death is 78, which means half will be dead and dying in the next four years and over the course of the next few years). However, if they have made it this far they will likely have another two decades of life. This site says there are factors in reducing mortality that you have the control over, including eating beans, nuts (walnuts in particular), cocoa, berries, whole grain, fresh fruits, and fresh vegetables. There is a good list of fruits and vegetables here: I love this list and wish I could eat some of these foods every day.

  • Alan

    When i gave up Dairy about 25 yrs ago i had a side effect. A good one though. I had reoccurring sore throats most of my life. I quit the dairy and they disappeared.

  • kejdzia

    First i tried to watch it on ipad and it was abot IBD then i switched to pc an it was about twin pregnancy. The url was the same in both cases.

  • Matthew Smith

    I saw in the cited material, “TR in vegans is .8 percent, TR in general is 1.9 percent” G Steinman. Bovine Hormones and Spontaneous Twinning in Humans. Department of Obstetrics & Gynecology Long Island Jewish Medical Center New Hyde Park, NY. That’s definitely more than twice as many twins! For how long should a mother not drink milk before she plans a pregnancy? Is hormone free milk any better? This site recommends for pregnancy a DHA or EPA algae based supplement, garlic, one snack box of raisins a month, and the March of Dimes has long recommended folate such as from beans or orange juice to reduce the risk of birth defects.

    • b00mer

      “Is hormone free milk any better?”

      Hi Matthew, aside from plant-based milks, there is no such thing as hormone-free milk. Milk from cows not injected with *additional hormones* is still in fact breastmilk, is designed for a rapidly growing infant, and is still full of naturally occurring hormones.

      • Matthew Smith

        Thank you Boomer! If 90 percent of Asians are lactose intolerant, and there are hormones in the milk, and there is cholesterol even in skim milk, and milk protein is hard to digest as many say, does that mean milk is bad for the intestine microflora? Dairy seems to be something people should limit if not eliminate. Some people become less milk, soy, and gluten tolerant in their lives. Does this mean they are bad for us as we age? Are they a mixed bag? How unsafe is animal product? O draw hope from this, because there are some cultures that live long lives on both entirely plant based diets and heavy animal based diets that use plants as for balance. There are cultures like the Eskimo, French, Nepalese, and some African herders that only eat meat and butter. They have some plant secrets, like berries, red wine, root crops, and others that grant them long life. I think these cultures should be studied and rewarded so we can find their special plants to treat high cholesterol throughout our lives.

        • Thea

          Mathew: re: “… there are some cultures that live long lives on … heavy animal based diets… There are cultures like the Eskimo, French, Nepalese, and some
          African herders that only eat meat and butter.”

          I think you are implying that there are cultures which heavily rely on meat, such as the Eskimos and which live long and healthy lives. From what I have learned, this is simply not true. You are so great at absorbing complex information, I have no reservations about recommending the lecture series from Plant Positive to you. You can do a search and just watch the videos on say Eskimos. But you might even find all of the videos to be of interest to you. (Though that would be a serious project.) Plant Positive has done *extensive* research on this topic and cholesterol denialism in general and has put together the results of his research into a series of videos.

          If you are interested, here is Plant Positive’s home page. You can search the website (there is a search box on the right) for cultures like “Eskimos” or just pick one of his series and start watching.

          • Matthew Smith

            Thank you very for your response and your link! In Michael J. Balick and Paul Alan Cox’s Plants, People, and Culture, he describes the people of Kenya, specifically Masai and Batemi peoples who only eat food that comes from their cattle, including meat, milk, and blood from cows. In the book, the two authors write that they eat more than 2,000 grams of cholesterol a day (more than the 300 recommended for us). The authors write that they have one third the cholesterol we do. Dr. Greger said that 70 percent of health is environmental, and that 30 percent is genetic. They think the people of Masai and Batemi have genetic controls on cholesterol. However, the authors go on to say these people add bark to their meat. The bark of an Acacia and a mimosa. These trees could be scouted for cholesterol drugs or could be made into food additives. Maybe it is dietary or environmental that they have lower cholesterol. Thank you for correcting my error. The inuit in particular, living on ice sheets, only have seal fat to eat in the winter, the same as some Greenland people. Many Russians have to eat 4,000-5,000 calories a day in the winter, mostly of dairy, because being cold burns so many calories (3/4 of your energy budget, calorie intake, goes to the Mitochondria to shake to make heat, the brain regulates this, it is a physical shaking that makes heat inside every cell, driven by Osmosis). These people are not known to have cholesterol problems late in life. Dr. Greger has described the Asian paradox, that Asians live so much longer in Asia and live so much longer than any other race here. How do we get that benefit for everybody? Is it green tea? Is it mushrooms? Is it meditation? Is it rice? Is it fruit? There is a similar problem called the French paradox. Why are the French so healthy when they smoke and eat so much beef and dairy, and yet live as long as Asians do in America? Some think it is the red wine. The French have less disease then us, and yet smoke and eat meat and heavy cream and butter more. They weigh less too. We do not think this is entirely genetic, but it might be in part. It might not even be dietary. It might be lifestyle based. The Irish, who I think helped create the vegan movement in this country, also have been told they have a terrible diet. They could be studied for the plants, lifestyle, and attitudes they have to overcome any shortcomings. I will go to your link now, thank you.

          • Toxins

            I would like to add some clarifications for you regarding the Masai. They did autopsy studies on the Masai and found that 40 year olds had advanced atherosclerosis. They concluded that you don’t see heart attacks because their life spans are not long enough. In addition, they walk a lot and live at high altitudes so they have dilated vessels. While there is plaque, the vessels still get flow.

            So it appears their diet is not heart healthy indeed.

          • Matthew Smith

            Thank you! Plant based diet for the win. Less meat for heart health.

          • Thank you for this, Toxins! I am so tired of hearing this “But what about the eskimos and the Masai?” argument. I have always opined this answer, but had never seen any research. Now I have a good answer! You are such a great help. How about writing a short (10-page) booklet and selling it online? A title like, Why your odd friend eats the way he does. Answers (and sources cited) to the the latest research to the questions the smart people always ask.

          • Matthew Smith

            Thank you sharing your link. I did a search on the Eskimo there and found an intensification of your claims!. That the Eskimo live longer on a plant based diet than their historical blubbery meat diet. That they had horrible heart disease form 1,600 years ago from eating mostly raw animal fat and eating more plants helps them live longer, now. The Eskimo have been used to justify the Paleo diet, but they had been sick with hardened arteries based on three Eskimo mummies from 1,600 years ago. Perhaps the Asian and French paradox are actually quite racist, that Asians and French have terrible lung disease from smoking and heart disease from eating meat and our concept of them being healthy and living longer is preventing them from getting help that they need. The video begins by saying that refined carbs were bad for the Eskimo people, but goes on to say that the Eskimo have always lived with parasites, heart disease, and arteries damage from their diet of raw meat. Thank you. I should be plant positive and stick to a diet that is not hard on the arteries, I should stick to a plant based diet.

          • Thea

            Mathew: It is refreshing to converse with someone like you who is willing to do some research!

            Concerning the “Asian paradox”, NutritionFacts has a video that I think you will find very interesting. It’s very short and speculative at the end, but some good food for thought:

          • Matthew Smith

            Thank you! Did you know that Asians live almost ten years longer than white people in America, as a median? Why is this? Is it genetic? Is based on wealth, as Asians are very slightly wealthier on average? Is it the green tea mentioned in this video? Seventy percent of health is environmental, according to Dr. Greger. Does that mean that seven of the additional years are based on healthy choices, my opinion, or do Asians genuinely live longer genetically? I admire Asian culture for its reliance on family, celebration, happiness, and its deep and enduring love of time. Could we embrace green tea, mushrooms, nori seaweed, soybeans, or any other cultural trait like sesame seeds for our health? There was a South Park episode in which they asked, “who wants to live to 90, anyway?” I think everyone does, if they can maintain their health, wealth, and life they will be happier throughout their lives. Choosing to live shorter can really add to end of life expenses. I am really interested in how to reduce end of life, nursing home and dying hospital bills (which often get into the hundreds of thousands of dollars), and I think this plant based diet is key. Thank you Thea, you have help clarify my thinking on how to add to my life and reduce the last hospitals bills I will pay and my nation is facing in the coming years.

          • Brite

            And you can add the practice of mindfulness , very effective for the stress reduction.

          • Matthew Smith

            Thank you Brite, I would like to study the practice of mindfulness. Reducing stress is a very salubrious way to add to life. Not just diet, but lifestyle intervention to add life to your years. I would love to research it. Filling your world with an attitude to benefit everything we see.

          • Brite

            Matthew, you could read Jon Kabat-Zinn, the father of the Program of the Stress Reduction Clinicat the University of Massachussetts Medical Center. For exemple, he wrote in 1990 “Full Catastrophe Living”, a very readable and practical book, and in 2012 “Mindfulness for beginners: reclaiming the present moment- and your life”. Those are two among many other very interesting books he wrote. I wish you a good life in mindfulness!

          • Matthew Smith

            Thank you very much for your recommendation, Brite. I would like to read these books. I read an except online and found it is very much a way to cope with stress and always meditate. The process seems to speed through grief. I am interested in a similar concept, a word that cannot be changed through any movement. These are things that you eat or places, many common names are based and grounded. “Worship yellow banana potassium, Washington D.C. ghost sword” An action unto the devine, a color, a food, an atom, a location or city, a type of person, and a weapon are all things that do not change and are grounded in reality. I like to mediate on them and use them to repent. Perhaps the more extreme the food for health the more it is a way to repent. “Amla” to health. “Rosehips” to praise. “Matcha” to sin. “Black Raspberries” to anger. “Ginger root” to pain. I would love to achieve this serenity. Long life!

  • I was able to view without difficulty.
    The link is

  • Judy Fields Davis

    Thanks so much!

  • Guy Hibbins

    I think that the association with twins may be due to the fact that vegan women are slimmer by about 4 BMI units than meat eaters and hence are less likely to experience infertility due to lack of ovulation. Clomiphene and other SERM drugs used to stimulate ovulation will increase twin rates by about 10 times.

    • Matthew Smith

      Vegan women are less likely to conceive with fertility drugs? That is very clever. Very elegant. Fertility drugs are very much a source of multiple birth in this country. Many multiple births in the country beyond triplets are due to fertility drugs, you say these SERM drugs like Clomiphene increase twinning by 10 times. Vegans aren’t using them? Very testable and feasible explanation as to a confounding variable as the reason why multiple births are more common to women who eat milk and dairy. Perhaps Dr. Greger could also report, “Vegans are less likely to be infertile” he has already said vegan men have semen quality 30 years younger than their peers.

  • It is because vegan twins are more polite so it takes them longer to come out:

    “Apres vous”
    “Oh no, you first, sie vous please”
    “I couldn’t possibly, really I insist, you first.”
    “How thoughtful, but
    “You really deserve first crowning…”

    Now you know the rest of the story, giddae!

    • jj

      Thanks for the laugh. I needed that.

  • Steve Bozic

    Dr. Greger. Is it plausible that excess sex hormones injested during pregnancy could cause a developing male or female fetus to choose the opposite sexual orientation? To me it seems possible that a pregnant female who consumes large amounts of estrogen etc. animal flesh, eggs, and dairy could inadvertently cause her unborn child’s homosexuality. If this were indeed possible we should be encouraging all females who are trying to conceive to adopt a plant based diet / stay away from meat/dairy and eggs as homosexuality is clearly a scientific abnormality. If it were the ideal/normal state for mammals than all mammalian species on earth would die off.

  • Kristin

    Hi Dr. Greger, what is the effect of a vegan diet on female fertility?

  • Aasha

    So then what about the phytoestrogens in soy for babies and children? Would this have the same effect?

  • FYI, this only applies to fraternal or dizygotic (two egg) twins, not to identical or monozygotic (one egg which “spontaneously” splits, for which there’s no known reason).