home
RSS
June 3rd, 2011
03:51 PM ET

How much is too much phytoestrogen?

Every weekday, a CNNHealth expert doctor answers a viewer question. On Friday, it's Dr. Melina Jampolis, a physician nutrition specialist.

Asked by Keyana of Spokane, Washington:

I have two questions. What is considered to be a high/harmful amount of phytoestrogen in a woman's diet per day? And should a woman who has had cancer not take estrogen replacements or eat a diet high in phytoestrogens?

Expert answer:

Hi, Keyana. These are interesting questions. I'm going to assume that you are talking about breast cancer since the association of phytoestrogen consumption and breast cancer risk is the most concerning to many women.

Phytoestrogens are plant-based compounds that act like the hormone estrogen. There are two basic types of phytoestrogens: isoflavones and lignans.

Soy products are the most common source of isoflavones, and the controversy surrounding cancer and phytoestrogens are related to soy products. To provide you with the best possible response to your question, I turned to noted cancer nutrition expert Rachel Beller, who addresses this question on a regular basis at the Beller Nutritional Institute in Los Angeles.

Beller explained that while phytoestrogens are similar to human estrogens, their effect on human estrogen levels has not been well-researched because plant estrogens are 1,000 times weaker than the estrogen produced in our bodies.

Many studies suggest that soy isoflavones' estrogen-like effects are probably too weak to have any significant consequence on breast tissue in healthy women - that includes breast cancer survivors.

Regarding the association with breast cancer, Beller points to a 2011 study published in Cancer Epidemiology, Biomarkers & Prevention that found soy to be safe and favorable, even for breast cancer survivors, when eaten in its natural, unprocessed state - for example, tofu, tempeh, edamame, miso soup.

In fact, experts agree that fermented soy (miso, tempeh) is good for you. The fermentation process alters the chemical makeup of soy, which reduces the level of isoflavones by as much as 300%.

Therefore fermented soy foods have three times less of the chemical in question.

While this study does not conclusively establish the safety of soy, phytoestrogens aside, soy is not only an excellent source of heart healthy plant-based protein, which is encouraged in the latest dietary guidelines for Americans, it also contains dozens of nutrients that also appear to help fight cancer development.

These nutrients can protect cells from becoming damaged, encourage faulty cells to die instead of reproducing, regulate cell growth and even improve cell communication. These are all things that help strengthen your body against cancer and heart disease.

A study has also shown that consumption of soy early in life may help protect against breast cancer later in life, even if it may be more questionable for post-menopausal women.

What's also noteworthy is that Asians have been eating soy foods in large amounts for centuries, and their traditional soy-rich diets are associated with lower risks of breast and prostate cancer than Western diets.

Beller goes on to say that the "bad rap" that soy's been getting is due to the fact that when we hear something's "good for you," we process it to the max, extract the good stuff and concentrate it, which basically makes it lose its original identity.

Skip the processed soy foods and supplements, especially if you have a history of breast cancer.

The bottom line: If you have no history of breast cancer, there is no known high or harmful amount of phytoestrogens, and foods such as unprocessed soy are an important part of a healthy diet.

If you have a history of breast cancer, as with nutrition in general, you should not focus on a single food or nutrient. The key is moderation.

The phytoestrogens consumed by eating moderate amounts of relatively whole and unrefined forms of soy foods (two to three times a week) can be considered part of a healthy, complete diet.

Regarding estrogen replacement therapy, according to the National Cancer Institute, "Studies of hormone use to treat menopausal symptoms in breast cancer survivors have produced conflicting results," so I suggest speaking with your physician to determine the best approach for you.

Follow Dr. Jampolis on Twitter


soundoff (918 Responses)
  1. SEO Marketing Agency

    http://www.boosterblog.com/vote-815901-624021.html?adresse=postfallslocal.com/

    May 21, 2021 at 06:42 | Report abuse | Reply
  2. rv repair santa fe

    http://old2.mtp.pl/out/ocrv.vip/rv-body-shop-near-me

    May 21, 2021 at 07:35 | Report abuse | Reply
  3. toad truck near me

    Hi, I do believe this is an excellent blog. I stumbledupon it 😉 I may come back yet again since i have book marked it. Money and freedom is the best way to change, may you be rich and continue to help other people.

    https://www.naniwa-search.com/search/rank.cgi?mode=link&id=23&url=https://www.ocrvcenter.com/rv-repair-shop-lemon-grove-california/

    May 21, 2021 at 08:07 | Report abuse | Reply
  4. RV Furniture California

    http://www.london.umb.edu/?URL=https://ocrv.xyz/rv-repair-shop-yucca-valley-california

    May 21, 2021 at 09:26 | Report abuse | Reply
  5. rv repair shop

    http://hammer.x0.to/cgi/search/rank.cgi?mode=link&id=6289&url=ocrvcenter.com/rv-repair-shop-orange-county-california

    May 21, 2021 at 10:50 | Report abuse | Reply
  6. checkpoint in lake elsinore ca

    I blog frequently and I seriously thank you for your information. This great article has really peaked my interest. I'm going to take a note of your site and keep checking for new information about once per week. I subscribed to your RSS feed too.

    https://radar.techcabal.com/clicks/track?url=http://ocrvcenter.com/motorhome-restoration-near-me/

    May 21, 2021 at 13:14 | Report abuse | Reply
  7. oranges for sale near me

    https://doctor-navi.com/cgi/hospital-search-engine2/rank.cgi?mode=link&id=14979&url=https://ocrvcenter.com/rv-repair-shop-porter-ranch-california

    May 21, 2021 at 15:41 | Report abuse | Reply
  8. RV Beds Los Angeles

    http://l-www.sitepal.com/affiliates/entry/?spdirect=1&affId=75895&promotionId=17691&link=pgdsmarjesap.si/?attachment_id=468

    May 21, 2021 at 17:10 | Report abuse | Reply
  9. FmrfEncox

    buying cialis on line https://cialisee.com/ cialis online

    May 21, 2021 at 19:43 | Report abuse | Reply
  10. Local Marketing Service

    You're so awesome! I don't suppose I've read through something like that before. So wonderful to find someone with genuine thoughts on this subject. Really.. many thanks for starting this up. This site is one thing that's needed on the internet, someone with some originality!

    https://nsuem.com/bitrix/redirect.php?goto=https://affordableranking.com

    May 21, 2021 at 21:44 | Report abuse | Reply
  11. RV Plumbing Riverside

    /

    May 21, 2021 at 22:44 | Report abuse | Reply
  12. RV Entertainment System California

    You're so cool! I don't think I have read through a single thing like that before. So wonderful to find someone with unique thoughts on this subject. Seriously.. many thanks for starting this up. This site is something that is needed on the web, someone with a little originality!

    https://eservices.dls.moi.gov.cy/translationCatalog.aspx?redPage=https://ocrvandtrucks.com/rv-repair-shop-bell-california

    May 21, 2021 at 23:14 | Report abuse | Reply
  13. Local Marketing Firms

    I’m amazed, I have to admit. Rarely do I encounter a blog that’s both equally educative and engaging, and without a doubt, you've hit the nail on the head. The issue is something too few folks are speaking intelligently about. I am very happy I stumbled across this in my hunt for something concerning this.

    https://www.charlie3.com/__media__/js/netsoltrademark.php?d=affordableranking.com

    May 22, 2021 at 00:51 | Report abuse | Reply
  14. Digital Marketing Company Near Me

    The next time I read a blog, I hope that it doesn't fail me just as much as this particular one. I mean, Yes, it was my choice to read, nonetheless I really thought you'd have something useful to say. All I hear is a bunch of complaining about something that you could fix if you weren't too busy searching for attention.

    https://www.joblinkapply.com/Joblink/5972/Account/ChangeLanguage?lang=es-MX&returnUrl=https://www.affordableranking.com/

    May 22, 2021 at 00:52 | Report abuse | Reply
  15. red tube pictures

    http://aurora.network/redirect?url=http://ocrvcenter.com/rv-repair-shop-huntington-beach-california/

    May 22, 2021 at 02:17 | Report abuse | Reply
  16. rv repair places near me

    This excellent website definitely has all of the info I wanted concerning this subject and didn’t know who to ask.

    http://nanos.jp/jmp?url=http://ocrvcenter.com/rv-dashboard-repair-near-me/

    May 22, 2021 at 03:41 | Report abuse | Reply
  17. speed shop orange county

    Greetings! Very useful advice within this article! It's the little changes that will make the largest changes. Thanks for sharing!

    https://bestrevie.ws/r/46678c091e3ae21e328f865434774f917baebabe-MDEyMDE5?url=https://www.ocrvcenter.com/rv-repair-shop-san-gabriel-california/

    May 22, 2021 at 07:52 | Report abuse | Reply
  18. reupholstery services near me

    http://demo.html5xcss3.com/demo.php?url=ocrvcenter.com/rv-seats-repair-near-me/

    May 22, 2021 at 09:49 | Report abuse | Reply
  19. LebnEncox

    non prescription medicine pharmacy http://xlnpharmacy.com/ pharmacy online shopping usa

    May 22, 2021 at 11:16 | Report abuse | Reply
  20. RV Leak Orange County

    http://ad.hvacr.cn/go.aspx?url=ocrv.art/rv-repair-shop-san-juan-capistrano-california

    May 22, 2021 at 18:56 | Report abuse | Reply
  21. tire stores in orange county ca

    http://allfilm.net/go?https://ocrvcenter.com/rv-bed-repair-near-me/

    May 22, 2021 at 23:28 | Report abuse | Reply
  22. rv parts and repair near me

    I was able to find good information from your content.

    https://suzuki.saikyou.biz/rank.cgi?mode=link&id=5&url=https://ocrvcenter.com/rv-repair-shop-universal-city-california

    May 23, 2021 at 03:58 | Report abuse | Reply
  23. rv shower repair

    It’s nearly impossible to find knowledgeable people for this topic, but you sound like you know what you’re talking about! Thanks

    http://hirlevel.mediacenter.hu/click.php?hirlevel_id=12405549102322&url=https://ocrvcenter.com/rv-tire-repair-near-me/

    May 23, 2021 at 06:51 | Report abuse | Reply
  24. tausAffessy

    https://apcalisetadalafil.com/ tadalafil goodrx https://tadalafilol.com/ – tadalafil dosage tadalafil brands

    May 23, 2021 at 12:06 | Report abuse | Reply
  25. LbsoZisse

    kamagranow cialis https://ucialisdas.com/ cialis cheapest price

    May 23, 2021 at 12:53 | Report abuse | Reply
  26. cyclomune

    cyclosporine cost buy cyclomune uk

    May 23, 2021 at 15:09 | Report abuse | Reply
  27. LbsoZisse

    wallmart cialis http://ucialisdas.com/ brand cialis canada

    May 23, 2021 at 16:21 | Report abuse | Reply
  28. RV Flooring Los Angeles

    http://www.zhhsw.com/home/link.php?url=https://drvaldemirferreira.com.br/o-que-causa-o-cancer/

    May 23, 2021 at 17:35 | Report abuse | Reply
  29. Digital Marketing Firms

    You made some decent points there. I looked on the net for more info about the issue and found most people will go along with your views on this web site.

    https://www.kenkopatto.com.br/00000010?url=https://www.affordableranking.com

    May 23, 2021 at 17:57 | Report abuse | Reply
  30. Unitmerienepeft

    cost tadalafil generic side effects of tadalafil tadalafil cost walmart tadalafil without a doctor prescription https://tadagatadalafil.com/

    May 23, 2021 at 19:42 | Report abuse | Reply
  31. rv repair shops near my location

    https://www.fudou-san.com/link/rank.cgi?mode=link&id=2898&url=https://www.ocrvcenter.com/rv-repair-shop-san-gabriel-california/

    May 23, 2021 at 20:06 | Report abuse | Reply
  32. tausAffessy

    tadalafil generic tadalafil generic tadalafil online lowest price cialis https://tadalafilol.com/ – tadalafil order online no prescription

    May 23, 2021 at 20:07 | Report abuse | Reply
  33. FmrfEncox

    cialis and dapoxetine canada https://cialisee.com/ best generic cialis

    May 23, 2021 at 22:01 | Report abuse | Reply
  34. Tembepteriope

    https://tadalafilww.com/ generic cialis tadalafil generic cialis tadalafil cheap cialis pills for sale buy cialis pills

    May 23, 2021 at 22:38 | Report abuse | Reply
  35. temecula roof repair

    http://preissuchmaschine.de/link.asp?url=http://ocrvcenter.com/semi-truck-collision-repair-shop-near-me

    May 24, 2021 at 01:30 | Report abuse | Reply
  36. JebgEncox

    online pharmacies of canada Desyrel Copegus

    May 24, 2021 at 04:05 | Report abuse | Reply
  37. Internet Marketing Consultant

    https://dawgshed.com/proxy.php?link=https://www.affordableranking.com

    May 24, 2021 at 05:39 | Report abuse | Reply
  38. Social Media Marketing Company

    https://www.shownotes.com/__media__/js/netsoltrademark.php?d=affordableranking.com

    May 24, 2021 at 10:36 | Report abuse | Reply
  39. bathroom repair near me

    http://www.bing.com/news/apiclick.aspx?ref=FexRss&aid=&url=http://ocrvcenter.com/boom-truck-collision-repair-shop-near-me

    May 24, 2021 at 12:47 | Report abuse | Reply
  40. Tritreviewifind

    tadalafil blood pressure https://tadagatadalafil.com/ – tadalafil goodrx generic cialis tadalafil cheap cialis pills for sale https://cttadalafil.com/

    May 24, 2021 at 13:06 | Report abuse | Reply
  41. sunroof repair near me

    https://orphus.ru/redir.php?https://ocrvcenter.com/rv-repair-shop-santa-ana-california

    May 24, 2021 at 13:14 | Report abuse | Reply
  42. RV TV Orange County

    http://big5.jobcn.com/gate/big5/ocrv.pro/rv-repair-shop-cathedral-city-california

    May 24, 2021 at 16:37 | Report abuse | Reply
  43. tausAffessy

    tadalafil daily online https://tadacipetadalafil.com/ buy cialis pills cialis tadalafil tadalafil daily online

    May 24, 2021 at 19:17 | Report abuse | Reply
  44. toilet repair near me

    Good post. I learn something new and challenging on websites I stumbleupon on a daily basis. It's always interesting to read through articles from other writers and use something from other websites.

    https://www.kanazawa-navi.com/navi/rank.cgi?mode=link&id=725&url=https://trevoraqsem.losblogos.com/3140634/the-smart-trick-of-rv-front-end-alignment-near-me-that-nobody-is-discussing

    May 24, 2021 at 19:43 | Report abuse | Reply
  45. BbshMile

    viagra stories pictures https://loxviagra.com/ viagra casero

    May 24, 2021 at 20:59 | Report abuse | Reply
  46. body repair near me

    Everything is very open with a very clear explanation of the challenges. It was definitely informative. Your site is very helpful. Thank you for sharing!

    /

    May 24, 2021 at 22:04 | Report abuse | Reply
  47. Tembepteriope

    lowest price cialis https://apcalisetadalafil.com/ – cialis without a prescription buy tadalis side effects for tadalafil https://tadalafilol.com/

    May 25, 2021 at 00:19 | Report abuse | Reply
  48. Forklift Service Shop

    That is a very good tip especially to those fresh to the blogosphere. Short but very precise info… Thank you for sharing this one. A must read article!

    http://umbraco.realeflow.com/108514?url=https://forkliftswildwestlifttrucks.com/lull-forklift-repair-orange-county-california/

    May 25, 2021 at 00:36 | Report abuse | Reply
  49. Video Marketing Consultant

    I could not refrain from commenting. Exceptionally well written!

    https://www.verificaip.ro/redirect.php?link=https://www.affordableranking.com/

    May 25, 2021 at 01:53 | Report abuse | Reply
  50. Tembepteriope

    cialis at canadian pharmacy where to get tadalafil tadalafil cialis https://tadalafilol.com/

    May 25, 2021 at 02:54 | Report abuse | Reply
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Leave a Reply to photo restoration orange county ca


 

CNN welcomes a lively and courteous discussion as long as you follow the Rules of Conduct set forth in our Terms of Service. Comments are not pre-screened before they post. You agree that anything you post may be used, along with your name and profile picture, in accordance with our Privacy Policy and the license you have granted pursuant to our Terms of Service.

Advertisement
About this blog

Get a behind-the-scenes look at the latest stories from CNN Chief Medical Correspondent, Dr. Sanjay Gupta, Senior Medical Correspondent Elizabeth Cohen and the CNN Medical Unit producers. They'll share news and views on health and medical trends - info that will help you take better care of yourself and the people you love.