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Flax, marijuana, hops, and 44 other phytoestrogen sources you might not know you’re consuming

Posted by on Dec 19, 2012 in Blog, Hormones | 45 comments

Flax, marijuana, hops, and 44 other phytoestrogen sources you might not know you’re consuming

Phytoestrogens are a topic of hot debate in the medical literature.  To eat, or not to eat?  To cure cancer, or to beget it?  As chemicals that act–but are not similar to–estrogen in the human body, phytoestrogens complicate a lot of biological functions.  Sometimes it appears as though they have a helpful role, but many other times, as in the case with female fertility and typically with PCOS, phytoestrogens can cause a lot of harm.

Phytoestrogens are found in plant foods.  They can also move up the food chain into animal sources, which is a consideration for women with endocrine issues who eat factory farmed animals.  They are reasonably well tolerated by people with “healthy” hormonal systems and livers.  The body responds easily to these semi-natural disturbances and can flush the phytoestrogens out of the system.  OR the body responds easily by maintaining estrogen production even while phytoestrogens are consumed.  This is not always the case for women.  Some are extraordinarily sensitive to phytoestrogens.

For more on the science of phytoestrogens, and specifically how they relate to estrogen deficiency and dominance in the female body, check out my post Phytoestrogens in the Body, and How They Interfere with Natural Hormone Balance. 

What I say in sum is that phytoestrogens take up places on estrogen receptors in the body.   This has big time implications.   Many medical professionals hypothesize that this is helpful for estrogen deficient women.  This would be by filling up unused estrogen stores, and therefore hypothetically increasing estrogen levels.  But other health researchers (including myself) believe that supplementing with phytoestrogens plays a reverse role: instead of increasing estrogen activity, the increased phytoestrogen load (especially given the fact that phytoestrogens are far less efficacious in performing bodily functions) tells the body to stop producing it’s own estrogen, which ultimately results in a decline in estrogen-related power in the body.

Phytoestrogens can also be harmful for women with estrogen dominance, if their bodies do not respond to the increased estrogen load and instead end up over-burdening their systems.

All that being said, I still believe phytoestrogen intake can be helpful for some women if their bodies respond in a hormonally healthy way.  This may particularly be the case for menopausal women, whose bodies have more or less stopped produced estrogen in the ovaries anyway.  Phytoestrogens may alleviate the pains of menopause while not causing any pituitary-related damage.  However, this is an issue, again, of individuality.  Some women may find it works, while others find it horrific.

My personal experience is that I am enormously sensitive to phytoestrogens.  I have narrowed down over many years the list of foods that give me acne, and aside from dairy, they are all phytoestrogens.  This past summer I achieved clear, soft skin for the first time in three years (save for the scars).   I experience small acne bumps when stressed, which is something I am okay with and working on slowly.  The only times, however, in which I have experienced cystic breakouts are when phytoestrogens I didn’t know I was eating were sneaking into my body.

These were flax, soy protein isolate (did you know it’s in virtually all brands of chewing gum?!  and tootsie rolls?!  and also that I consumed tootsie rolls?!), and thyme.

We all talk about the dangers of soy and phytoestrogen intake, but the list of phytoestrogenic foods is long and complicated.  Many different studies list different foods as having different phytoestrogen content.  My inability to navigate them has been the bane of my skin for years.   But now I have compiled, however, a list of all of the foods, herbs, and substances that seem to be the most problematic and crop up in continuous studies.

Finally!

——————————-

They can be summed up as: virtually all beans, peas, seeds, and nuts, some herbs, and a handful of fruits and vegetables.

They are as follows, with the most potent foods listed with an asterisk:

**Flaxseed and flaxseed oil (3 x as potent as soy in some studies!)

**Soy, soy oil, soy protein isolate, tofu, textured vegetable protein, and all of it’s derivates

All beans:

*Mung beans

*Bean sprouts

*Chick peas

Peas

*Sesame, sesame seeds, and sesame oil

*Sunflower seeds

*Fennel

*Alfalfa

*Licorice

*Verbena

*Tumeric

*Thyme

*Red Clover

*Yucca

Cinnamon

Sunflower seeds

*Red Clover leaf and extract

Garlic

Olive Oil

Apricot (especially dried)

Prunes (dried)

Dates (dried)

Sweet Potatoes

Parsley

Thyme

Whole grains: Rye, *Oat, Barley, Millet, Wheat, Corn, Quinoa

*Most nuts:

Chestnuts

Almonds

Peanuts

Cashews

Walnuts

Hazlenuts

Pistachios

And to a somewhat lesser extent the fruits and vegetables…

Blackberries

Pomegranate

Asparagus

Winter squash

Broccoli

Green beans

Collards

Onions

And the substances…

*Hops

*Marijuana

For a complete listing of the fruits and vegetables in this list and their respective phytoestrogen contents, click here: phytoestrogens.  I got the data in it from Gunter et al 2006.

Other sources are here, here, and here, for example.  For phytoestrogens in animal products (all ~low, and none in seafood and butter), see here.

And, yes!  Marijuana and hops (a primary ingredient in beer) are both phytoestrogens.  It is worth noting that crude marijuana extract smoke and not just the physical plant matter competes for the estrogen receptor in receptor studies.  This means that inhaling marijuana, whether through one’s own cigarette or in the company of others who are smoking, counts as potential estrogenic activity.  All that being said, these chemical results were not replicable in vivo on rats, so it’s as yet undecided in trials if it has an effect on humans.  Personally, I don’t risk it these days.

Sorry.  I’m sad, too.

——————————-

And as I final note, I strongly encourage you to check the label on anything processed you are considering consuming.  Like I noted above, Tootsie Rolls are made out of soy.  I had three on a road trip with my family and woke up the next morning with a painful cyst. I didn’t think to check– I though the risk small– but it turns out I was wrong.  It took me a week to figure out what I had done wrong, and when I finally checked the ingredients in Tootsie Rolls I face palmed myself in a big way.  Lots of anxiety over nothing at all.

Other big sources of soy protein and phytoestrogens in a processed diet are protein bars, cereals–particularly “protein plus” cereals, oat-based cereals, granolas, flax-containing granolas, granolas or cereals made with any kind of seed oil, triscuits, wheat thins, every kind of chewing gum, the more chewy types of candy, and probably most baked goods.

——————————

All of which is to say, again, that phytoestrogens are complicated.  I don’t advocate that you go crazy controlling your intake of all of these substances.  Absolutely I do not.   Please keep eating broccoli.  But for those of us who are particularly sensitive to estrogen flucutations, such as I am, it can be enormously helpful for understanding why we are getting breakouts, experience fluctuations in our sex drive, or failing to produce as much vaginal discharge as we normally do on occasion.   Huge doses of peas or garlic over a couple of days can make a real impact, as can the accidental consumption of soy.   So if you’re into the nitty gritty of troubleshooting, this list should be helpful.

If I’ve missed any phytoestrogens that should be on the list, please let me know!

More about progesterone competitors coming soon.

And finally: what is your experience with phytoestrogens?  Anyone as sensitive as I?  Or the total opposite, and robust?

Are they helpful?  Harmful?   In menopause, or at reproductive-age?

 

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45 Comments

  1. Wow! I already cut out gluten, wheat, and dairy, and I suspected I was having issues with soy so I try to avoid it too. But I had no idea that all those other foods were potentially causing issues too!! Thanks for the great info!! I’ll have to start watching my intake of some of the other items on that list now!! Don’t know if I can ever give up garlic, but perhaps I can limit how much I eat in a week, or just limit some of the other items on the list like some of the nuts, seeds, and their oils.

  2. Wow! Thanks for this list! As one who has estrogen dominance issues thanks to a thyroid & adrenal imbalance, I knew to avoid/severely limit some of the items on this list, but others were a total shock (but explain a lot of thing!)

    I have a question regarding the table you link to – there’s no context for the amount of food for the amount of phytoestrogens. So is it 1 apricot that will yield 443 phytoestrogens or 1 oz, or 1#. Couldn’t quite discern from the article.

    Thanks!

    • Yeah, I’m sure it’s in the “methods” section, but I’d have to take a look and don’t have the time at this precise moment. What I can tell you is that it’s all the same amount of each compound: for example, in 10 grams of soy there’s x micrograms of phytoestrogen. The same goes for 10 grams of apricot, dried apricot, etc. This similarity is what enables us to have a basis for comparison. In fact, I’d argue that the absolute values aren’t necessarily that important. We’d have no use for them. Just being able to compare the amounts is probably sufficient. Knowing that soy is 100,000 units of potency and flax is 3 times that, we can see how much we want to avoid flax. And the same goes for broccoli, which is only 100 units per x amount of material.

      • Thanks! That makes sense…

        Thanks again for pulling all this information together.

    • I think I’ve responded to another comment similarly– I’m not sure on the amount. But the whole point is to relativize it anyway. The exact measure doesn’t matter so long as we can compare the foods. If you know that soy is “SO BAD” then you can tell that 300,000 units in it is 10,000 times worse than half a serving of broccoli.

  3. When I saw this list, I thought, ‘Surely she’s not suggesting giving up all of these foods.’ Then, at the end of your article, I was relieved to see that you don’t. You might want to move that advice up to the top of the list, though, since not everyone reads the entire article, and you’re such an advocate for people to not over-restrict themselves.

  4. I also get cystic acne from certain foods. I have literally spent two years tracking everything I eat in an effort to narrow it down. Soy is TOP on the list (I avoid every variation of it – no small feat), as is dairy (though I’ve determined whey is somehow okay), and all grains. Some of the reactive foods also cause constipation, which helped me pinpoint them since that’s a more immediate raction than a cyst, which takes a couple days to show up (for me).

    However, I do still get acne from time to time, usually from restaurants (I’ve learned to get very very detailed in my order – which I hate), and sometimes I can’t pinpoint ingesting any of my “known” reactants. This list will help! I can easily eliminate things I eat regularly without reactions, the things I KNOW cause reactions – and what I’m left with are foods I shall test. Thank you!

  5. I guess if I’m eating a number of many of the items on this list it can really add up quickly, eh? Looks like I need to reevaluate my meal plans. : (
    So long sweet potatoes…?

    • Just do some playing around and see what works. I personally do just fine on sweet potatoes but the legumes, nuts, and seeds all make differences in my acne.

  6. Many of those vegetables are high in histamine, which is also linked to acne!

    Also, you listed sunflower seeds twice, as *high* and not high. Which is it?

    • I’d say “moderately.” It’s all relative. I can’t do seeds at all or they give me acne.

      Interesting note on the histamine, definitely. I’ll try and write on histamines as soon as I can.

      • I suffered cystic acne for over 12 years. During that time, everything I ate seemed to give me acne: chocolate, mango, broccoli, milk, … especially cheese. Though I don’t think it’s because of phytoestrogen. Because now, I know how to rid myself of cystic acne, and I can enjoy any of the above food without breaking out. I’ve learned to cleanse my kidney and liver several time before my skin cleared out, and repeating once of each every other year or so. It seems that our organs were sluggish and can’t flush out used hormones as well as toxin. Those built up in our system for so long that our skin is now responsible for releasing those. I found your article intriguing about hops and marijuana, because I took hops and maca (for a self-trial for keeping youngful look… lol), and sure enough I have strong case of PMS, and very moody (plus higher libido) which I don’t, since I cleansed kidney and liver, and then major menstrual cramps. I stopped hops and maca, cleanse my kidney again, and the symptoms are gone.

  7. I have question. I had a hysterectomy in May 2012. I struggle with endometriosis, hashimoto’s, Sjögren’s syndrome & celiac. I’m on estrogen therapy & the autoimmune protocol but my allergies are getting worse! I eat meat, non starchy vegetables & fruit. I can’t tolerate any spices or starches & my allergies continue to worsen. Any suggestions?

    • Dear Jeanine,

      drink Lemon Balm tea to keep your TSH down. Calms the whole system and stomach soothing, good for brain too. Auto-immune problems generally caused by food allergies. I would do a food sensitivity test.Regards, Bridget

  8. When I stopped eating grains I had a daily “one minute muffin” made with flax to replace the bread and cereal. A few weeks in I started spotting, which gradually progressed to bleeding and then very heavy–almost hemorrhagic–bleeding. My doctor told me it was “just menopause” but I was anemic after 8 weeks of bleeding and getting frightened by the intensity. I googled and found that bleeding was linked to flax ingestion so I stopped immediately and the bleeding stopped two days later. So much for menopause!

  9. Omigosh–this is SO helpful! I’ve had phytoestrogens on my mind a lot lately. I used to be a vegan, and I randomly developed amenorrhea after about 8 months of my soy-heavy animal-free diet. That, and my horrific acne (which seemed correlated with my vegan diet) was one of the primary motivators for my trying Paleo. Everything else, health-wise, seemed to get better, including the acne to some extent, but no return of menstruation. So I did some research and bought raw maca powder. Within two weeks, I had my period back.

    I’m concerned, because I think I’m doing more harm than good in continuing to feed my body phytoestrogens. I think the soy destroyed my body’s ability to make its own hormones, and now I need to supplement with plant estrogens just to have my body function as it should…

    Anyway, I so appreciate all of your fantastic info–maybe I need to take a look at my diet and see where I can start cutting down on the plant estrogens to just give my body a chance to reset…

  10. Great post…!!! pulling all this information together in a great way.

  11. I am so glad I have found this site. I do have a question for you Stefani regarding PCOS. I have a fairly advanced case of PCOS to the point of consideration of the removal of my ovaries. I’m not too concerned about the reproducing anymore offspring but I am very concerned about the hormonal shifts that are going on with my body. I am currently on hormone treatment but in all honesty, I feel worse than when I started as everything feels off center. I stumbled upon your website researching the Paleo lifestyle and was pleasantly surprised to see the tie in to PCOS! I’m sure you’re wondering why I’m commenting on this article but being an avid consumer of marijuana, I had to click and read. Admittedly, I was quite disappointed in what I read not about marijuana but more about seeds, nuts and quinoa. I was under the impression that quinoa was NOT a grain but rather a seed. I’ve successfully omitted all grains, beans, soya (always had a sensitivity to this so this wasn’t that hard!) from my diet and this was a major bummer to read :(
    I am feeling very deprived right now thinking of the possibility of having to omit this as well. Thank you for the great article however and keep up the great work.

    • Ha! Scratch that first line. I really don’t have a question regarding I meant to say quinoa but took the long winded route asking!

  12. This is really helpful. Another case against nuts for me — which I know I do better without, but have a tendency to eat anyways because they are so snackable — thank you for the info!

  13. Hi! I just found out i have high levels of progesterone in my body and i want to make sure i cut out foods that are adding to this hormonal imbalance. i am confused as to if the foods listed in this article INCREASE estrogen or INCREASE progesterone?! Thanks for your information, it is so appreciated!!!

  14. So you have said before to eat carbs….but what carb is possibly left? Do you have any advice on particular brands of pre packaged food that we CAN eat? I don’t always have time to make everything from scratch, and I am a huge snacker! I think this list was very helpful, but making a list of things we can eat would help me soooooo much! At least some ideas….and maybe some less obvious choices, like this nut is ok, and this carb is ok, and this pre packaged snack food is also ok. I am looking forward to that!!!! Thank you for all of your help tho!

    • I think fruit is great — what about some raisins or other dried fruits? They are enormously calorically dense, so I’d step a bit cautiously around them. Nuts of course are okay in moderation, too, so that makes trailmix all right. And with dark chocolate… sounds quite tasty! Some protein bars are also okay to throw on the list so long as you are someone who can tolerate that moderate amount of nuts… Lara bars come to mind. There are also “tanka” bars (google!) which are expressly paleo, if you’re into that kind of thing. :)

  15. Thanks for the post! It is very important to warn as many people with estrogen dominance about the role of food we eat for this condition.

    Though, I must note that it is very individual: some phytoestrogen containing foods and herbs also contain estrogen blockers, and fiber helping to eliminate excess estrogen and can contribute to the restoration of the hormonal balance.

    These foods, however, must be first tested in small quantities, because, again, it is individual.

    For example broccoli. When I discovered that my PMS, weight gain and never ending breast pain are caused by excess estrogen I have been put on progestogen only pill. It made my ED symptoms better, BUT gave me depression and total lack of energy. So I have stopped taking it after a year.

    I have started taking broccoli extract together with vitex. Both contain phytoestrogen, but my condition improved tremendously in about 3 month. I have to say that at the same time I’ve stopped consuming milk, cheese, and soy and reduced the amount of non organic eggs, poultry and meat.

    So broccoli which I eat very often, quinoa, and buckwheat don’t seem make estrogen dominance worse. Quinoa and buckwheat are considered inflammatory, so I balance it with mackerel and cod liver oil. AlsoI eat about 1oz of soaked almonds every day, because they are a great pre-exercise snack easy to carry, and it seems to be ok.

    I believe I have managed to improve my condition with proper diet and exercise without taking synthetic drugs (which on the long run made things worse for me).

    The last thing I would like to add, is that apart from foods, people with hormonal imbalance will benefit from eliminating cosmetics with mineral oils and BPA, petroleum based laundry softeners and avoid overexercising.

  16. I think I’m in about the same boat as you were, Stephani! I’m low on estrogen and looking to cut out any extra phytoestrogen-containing foods. But I see sweet potatoes and olive oil are on here!!! Are they really that bad?

    • Nope! Please feel free to eat them … just don’t make them 100 percent of your calories. :)

  17. Excellent article. I too suffer from cystic acne! I have eliminated Dairy, soy (except for traces hidden in processed food) Flax, all alcohol and caffeine even the little in chocolate. Not only do these foods trigger my cystic acne but they aggravate my TMJD (I had both jaw joints replaced 14 yrs ago). I have found a couple things that really help. Decolorized iodine(SSKI potassium iodide) topically at the first sign of a cyst can make it DIE on the spot! Also a pico ionic Magnesium supplement called ReMag taken orally has changed my life in terms of everything health related. I recently started putting fresh Aloe in my green smoothies and I didn’t get acne but had a weird breakthrough bleeding episode which made me inquire if Aloe is a phytoestrogen and sure enough it is! WHO DA THUNK IT?

  18. That’s interesting,however some foods you mention in your list as being estrogenic are listed in this list as being estrogen-blocking? (like cabbages,onion,blackberry…and all animalfood is supposed to be estrogenic so also seafood.)

    http://dogtorj.tripod.com/id45.html

    So,it’s kind of a problem with all these different lists out there…

  19. I guess I have the opposite problem. When I eat a diet rich in phytoestrogens it had a good impacr on my body. But it is not 100% of my diet, Also I prefer whole, natural sources. Our bodies our different. The Liver Doctor has a good quiz to find out which of the four body types you are. I am gynaeoid, and that means my fat is distributed around my ovaries( lower stomach, upper thighs, buttocks). Each body type has different reccomendations for food, exercise, and supplements. And it is all helpful.

  20. I have been attempting to research the correlation between vitamin c and estrogen dominance after researching why I get a high feeling from dairy products especially liquid cow milk and attempting to research a study indicating how vitamin c reduces the autoimmune reaction to gliadan. I learned there is a lot of conflicting information in regard to vitamin c and estrogen depletes the vitamin c in the body and possibly increases estrogen levels. (I could not find information on whether this is a regulatory effect to balance the various types of estrogen or not) I did learn symptoms of estrogen dominance are similar to symptoms of low vitamin c levels. I stumbled on an old article from the Harvard Gazette: http://www.news.harvard.edu/gazette/2006/12.07/11-dairy.html. It discusses the high levels of estrone sulfate found in milk of pregnant cows. It also indicates concern of added estrogen from animal sources. I would project these high levels come from the feed they are fed. Further research indicates to me the estrone sulfate in high amounts is not healthy for humans. I had been wondering why I would get a high feeling coupled with anxiousness and irritability when I consumed dairy products. Estrogen triggers serotonin, epinephrine and nor-epinepherine production amongst other things. Suddenly the symptoms I have been experiencing align. It also makes sense that the foods high in phyto-estrogens are also problematic for my system. I was reading a couple of your articles and really I was just curious if you had considered animal sources of estrogen and phyto estrogen and what your take on them is?

  21. Hey Stefani!

    I’m so confused! I’ve read that sweet potatoes and turmeric are both really good for acne prone skin. I’ve been doing great on paleo for over a year but can’t clear my skin. Is it a good idea to cut all phytoestrogen sources from my diet for a month and see if there are any differences?

    Thanks!

    • I think removing flax and soy is important, and other phytos should at least have an eye kept on them. It’s probably more important to figure out whether you have hormone balances and which ones, and also to focus on gut healing and cooling inflammation

  22. As a stage IV ca survivor, my diet includes many herbs and spices. It saddened me to have to give up my Ceylon cinnamon. On the upside, I understand that turmeric is an estrogen blocker! Yay!

  23. What about men?

  24. Broccoli has indol 3 carbinol and estrogen blocker. Why would you say it causes estrogen dominance that is crap

  25. What am I going to eat? I had a bilateral mastectomy 3 years ago after a breast cancer diagnosis. I am a food “nut,” and I thought I was eating extremely healthfully until I read this article. As an estrogen-receptive woman I have avoided soy and eat mostly vegan. I had NO IDEA that nuts, seeds and beans (the foundation of protein in my diet)are phytoestrogens. I am 5’5″ tall and weigh 110 pounds. I do not want to lose any weight. What can I eat? This is very discouraging.

  26. It should be noted in your article, as it is not, phytoestrogens are good for women with fibroids. Hundreds of doctors and thousands of web resources will tell you this. You are speaking for the norm and that’s pushing it because I find your article to be in the minority. Just google fibroids and how to combat them and you will find that phytoestrogens are important for women with this condition.

  27. I think it’s great that you’re making this info available on your blog, but I would say that your summary is somewhat misleading. You introduce your list by saying these are foods that are the most “problematic” and appear in study after study. All the sources you’ve listed simply list these foods as having traceable amounts of phytoestrogens, not that they are harmful for health. In one of your links which lists various abstracts the benefits of many of these foods (like legumes) are the focus of the study (e.g., anticancerous properties), while none of the abstracts I looked indicated these foods caused health problems of any kind. Here’s an academic article exploring this topic and summarizes studies conducted on health effects and indicates there are many demonstrated benefits, while acknowledging there are precautions that may be needed in the case of excesses, pregnant women, etc. http://www.researchgate.net/profile/Wendie_Cohick/publication/8593845_Dietary_phytoestrogens_and_health/file/72e7e519623e2417b9.pdf

    So when you say this list of foods is problematic, I believe you mean problematic for people like you who are highly sensitive to phytoestrogens, I presume due to uncorrected estrogen dominance and maybe some specifics of your physiology.

    I also think most people reading your blog post will not look at the attached articles/lists and will not realize that there is an enormous difference between the level of phytoestrogens in soy beans (~104,000 mcg/100 gm) and cooked kidney beans which have a measly 41 mcg/100 gm. The phytoestrogenic content in sunflower seeds which you give one star to has a content of 216 mcg/100 gm, or roughly 2/1000th the phytoestrogenic content of soy beans. Just because tests can measure phytoestrogens doesn’t mean their levels are at all significant for most people.

    And how on earth does beer make it onto your list? Hops appears somewhere in a non-academic source list, and hops is a common beer ingredient. But beer itself is on one of your linked tables and it reads in at a whopping 2.7 mcg/100 gm (that’s 2.7 mcg in 5 LITRES of beer).

    The list might be more useful and less alarming to people if you include the figures next to the food, to put the degree of exposure into perspective.

  28. Been knowingly phytoestrogenic sensitive for about 8 years now and I just wanted to encourage you to do a bit more research on phytoestrogenic properties of sweet potatoes. It is my understanding, and experience, that sweet potatoes are not phytoestrogenic. As Wild Yam is not on your list, I think you may have swapped the two. They are very different plants from different families.

  29. So…is there a list somewhere of foods I CAN eat??? Because it looks like I wont be eating ever again after reading this list! Wow…

  30. Hello!

    Thanks for this list! I recently stumbled on your blog, and it’s been very helpful. I have a question similar to someone above…what ‘good’ carbs are left for someone with endometriosis (major estrogen dominance)? I don’t have a huge budget for my family, so buying in bulk is really really helpful, but since beans have phytoestrogens, it’s hard to know if I should be buying them. I soak my beans and whatever grains I do eat like quinoa, but not sure what would be a good “replacement” for these carbs in meals. Any thoughts?

  31. From what I’ve read about iodine, I think it might be the missing element in treating estrogen dominant allergies, acne, pms, and cancers. Most North Americans are actually iodine deficient and this is exacerbated by fluoride and chloride in tap water and bromine in breads and flour, because these are all halogens that compete for receptor spots in the body, when iodine is what thyroid needs. The Weston A Price foundation has a good discussion of iodine. It is what your thyroid needs to turn dangerous forms of estrogen into useable form. Dido for men, why they find their testosterone levels are improved with iodine supplementation with lugols or seaweed. Ryan Drum has a great website on seaweed benefits. Selenium and iodine should always be taken together and there are many naturopaths and biochemists who can explain why. There is a whole literature on vitamins by the orthomolecular researchers like Linus Pauling and Dr. Kunin.

    Long story short, you need to avoid fluoride and chloride from tap water and bromide from baked goods, which most paleo folks already do. Then you need to research iodine and selenium and decide if you are low in these anti-inflammatory nutrients. There is a Canadian dr who is convinced these two elements could prevent and treat estrogen based cancers.

  32. Here is one good article on the history of potassium iodide use in medicine: http://www.westonaprice.org/modern-diseases/the-great-iodine-debate/

    As far as I can tell iodine is needed:
    As an anti-inflammatory, prevents oxidation of fats including omega 3
    As anti microbial, kills fungus, bacteria, viruses
    As detoxifier (binds with heavy metals for excretion, as does selenium)
    For preventing fibroids and any abnormal fibrous growths, cysts, tumors
    Keeping tissue soft and pliable, including arteries

    The benefits are long, but it must be taken with a good understanding of how much for how long etc.

    Fluoride is the other side of the story, as I mention briefly above. You can learn more at the Fluoride Action Network. In the 1800s fluoride was used to lower thyroid function, so when consumed by people with normal to low thyroid function, it is very damaging, as you can imagine. Especially as it competes with the much needed iodine.

  33. I am an oestrogen dependent breastcancer survivor and have discovered that my efforts to reduce raised cholesterol levels twenty five years ago by reducing animal proteins to micro-portions in my diet, increasing soy products, flax, sesame seed, and other phyto-oestrogen rich foods knowingly, and consuming soy products (listed as emulsifier, vegetable oil, soy, soya, soya flour, and in 70 % of ALL supermarket food), were based on myths created by well meaning naturopaths, dieticians, and healthfood vendors.

    Investigations into internet discussions of the role of soya in causing this type of breast cance has been extremely confusing; some saying “eat more” some saying the “findings are controversial”. The latest readings, 2013, are now saying unequivocally “soya causes breastcancer, and my oncologist has now confirmed it. I now bake bread with non-GMO, seventh generation, organicaly farmed, unbleached, heavy vintage species, unbleached, stone ground wheat, and soya free flour and I am on as close to a 100% non-soya and flax seed diet, and a reduction in other phyto-oestrogen bearing foods.

    I am currently looking at oestrogen-clearing foods such as celery, organic eggs (the good stuff is in the yolk), which we farm ourselves, and oats, which we buy in. And yes, it is all about the quantities of the oestrogen in the food, not simply the presence.

  34. I have a comment awaiting moderation under estrogen dominance, but yes. Major issues thanks to flaxseed.

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  1. La Revue du Net Paleo #22 | Paléo Lifestyle - [...] Les sources de Phyto-oestrogènes. [...]
  2. Paleo for Women | The Estrogen Dominance Post: Where Its Coming From, and What to Do About It - [...] every single case, however, soy, flax, legumes, and other sources of estrogen outside of the body  interfere with our …
  3. Estrogen Dominance and Amenorrhea | Erica House - [...] disruptors in food/the environment. Plastics made with BPA, foods that promote the creation of estrogen in your body like flax, …
  4. My PCOS supplement superfoods and 5 foods to avoid | purelytwins - […] (flax seeds and flax oil) – also contains phytoestrogens (still a debate if good or bad), but I avoid …
  5. The Ultimate List Of Natural Ways To Increase Testosterone Levels - […] in Japanese-American men.   Heavy metals and Testosterone   Hops are Estrogenic   phyto-estrogen sources   Chopping trees …
  6. Five Weeks of Flexitarian Eating Wk 2 {Let’s Talk Tofu} :: Lydia's Flexitarian Kitchen - […] there’s some question about the effects the phytoestrogens found in soy (and other legumes and just about all of …
  7. Phytoestrogens in common foods | Worts & All - […] liver, it’s plenty busy. But this will vary for each individual. And as pointed out on the Paleo for …

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