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 (924 Responses)
  1. New Forklift Tires California

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

    https://www.kichink.com/home/issafari?uri=https://www.forkliftswildwestlifttrucks.com/anaheim-forklifts

    May 25, 2021 at 07:13 | Report abuse | Reply
  2. brimonidine

    combigan eye drops generic combigan eye drops 2%

    May 25, 2021 at 08:56 | Report abuse | Reply
  3. Social Media Marketing Companies

    http://kuwait-airways.com/__media__/js/netsoltrademark.php?d=http://affordableranking.com

    May 25, 2021 at 09:37 | Report abuse | Reply
  4. Internet Marketing Consultants

    When I originally left a comment I seem to have clicked on the -Notify me when new comments are added- checkbox and now each time a comment is added I get four emails with the exact same comment. Perhaps there is a means you are able to remove me from that service? Appreciate it!

    https://www.pilotpen.eu/en/catalogsearch/result/category/?redirect=http://www.affordableranking.com/

    May 25, 2021 at 10:49 | Report abuse | Reply
  5. Social Media Marketing Consultant

    After checking out a few of the blog posts on your site, I really like your way of blogging. I book-marked it to my bookmark website list and will be checking back in the near future. Please check out my web site too and tell me your opinion.

    http://www.top50-solar.de/newsclick.php?id=109338&link=http://affordableranking.com/

    May 25, 2021 at 11:07 | Report abuse | Reply
  6. Google Marketing Specialist

    https://laureluniversity.vfao.com/register.aspx?returnurl=http://www.affordableranking.com

    May 25, 2021 at 15:12 | Report abuse | Reply
  7. CrulkAsd

    how much does cialis cost in canada https://cialisjla.com/ – buying viagra or cialis min canada buy 5mg cialis online

    May 25, 2021 at 17:14 | Report abuse | Reply
  8. tausAffessy

    tadalafil price walmart https://tadagatadalafil.com/ – cheap cialis pills for sale prescription tadalafil online cheapest tadalafil cost https://apcalisetadalafil.com/

    May 25, 2021 at 18:56 | Report abuse | Reply
  9. ac shop near me

    http://www.music-style.info/music-style/rank.cgi?mode=link&id=7897&url=https://refundfees.com/eldorado-6/comment-page-345/

    May 25, 2021 at 23:32 | Report abuse | Reply
  10. EncoxHtf

    cialis 20mg tablets https://cialishav.com/ – cialis coupons online cialis for sale toronto

    May 26, 2021 at 00:06 | Report abuse | Reply
  11. socal upholstery

    http://mugen.matrix.jp/cgi-bin/gate/rank.cgi?mode=link&id=97&url=homedesignhq.co.uk/component/k2/item/1-xiaomi-s-upoming-tablet-the-mi-pad-will-go-on-sale-in-beta-for-the-price-of-16-cents.html?start=714660

    May 26, 2021 at 01:03 | Report abuse | Reply
  12. RV Alignment Orange County

    Way cool! Some extremely valid points! I appreciate you penning this write-up and also the rest of the site is extremely good.

    &ch=283085

    May 26, 2021 at 01:37 | Report abuse | Reply
  13. Unitmerienepeft

    side effects of tadalafil tadalafil online buy generic cialis online with mastercard tadalafil cialis https://tadalafilol.com/ – tadalafil generic where to buy

    May 26, 2021 at 05:11 | Report abuse | Reply
  14. RV Furniture Near Me

    https://studio.airtory.com/serve/pixels/b833f37181dfbce762f41367573578fe/click/pixel?redirect=https://kuriyeedu.com/?p=152046

    May 26, 2021 at 05:20 | Report abuse | Reply
  15. ZisseVed

    generic cialis black https://krocialis.com/ – cialis pharmacy cialis without a prescription paypal

    May 26, 2021 at 11:11 | Report abuse | Reply
  16. 2006 Sprinter 3500 Repair Near Me

    http://ads.timesindonesia.co.id/network-1/www/delivery/ck.php?oaparams=2__bannerid=23__zoneid=33__cb=7f6aba05b4__oadest=https://sprintervanrepairshop.com/winnebago-van-repair-shop-near-me

    May 26, 2021 at 12:53 | Report abuse | Reply
  17. tausAffessy

    tadalafil blood pressure https://tadalafilww.com/ – tadalafil goodrx best price usa tadalafil tadalafil online tadalafil side effects

    May 26, 2021 at 13:42 | Report abuse | Reply
  18. Ecu Repair Shop For Sprinter Van

    https://www.yourareacode.com/management/emailer/sections/link.php?campaign_id=5541&url=https://fleetservicesorangecounty.com/sprinter-van-restoration-shop-near-me

    May 26, 2021 at 14:27 | Report abuse | Reply
  19. ZisseVed

    express scripts prior authorization form for cialis https://krocialis.com/ – is cialis or viagra better cialis without prescriptions canada

    May 26, 2021 at 16:43 | Report abuse | Reply
  20. RV Batteries Riverside

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

    http://openforbusinessmagazine01.businesscatalyst.com/Redirect.aspx?destination=https://ocrv.info/rv-repair-shop-pomona-california

    May 26, 2021 at 19:00 | Report abuse | Reply
  21. tausAffessy

    side effects for tadalafil what is tadalafil tadalafil price walmart buy cialis https://tadacipetadalafil.com/

    May 26, 2021 at 20:08 | Report abuse | Reply
  22. Tritreviewifind

    best price usa tadalafil cheap cialis pills for sale cost of cialis https://tadacipetadalafil.com/

    May 26, 2021 at 21:22 | Report abuse | Reply
  23. EncoxGtv

    valtrex online pharmacy canadian online pharmacies legitimate by aarp buying prescription drugs online

    May 26, 2021 at 22:21 | Report abuse | Reply
  24. Erika Urik

    You're so interesting! I don't think I've truly read anything like that before. So nice to discover another person with some unique thoughts on this issue. Really.. thanks for starting this up. This web site is one thing that is needed on the internet, someone with a bit of originality!

    https://thediplomat.com/ads/books/ad.php?i=4&r=http://paradisepoolnspa.com

    May 27, 2021 at 00:30 | Report abuse | Reply
  25. orange county trailer supply

    https://www.podcastone.com/site/rd?satype=40&said=4&aaid=email&camid=-4999600036534929178&url=https://

    May 27, 2021 at 02:10 | Report abuse | Reply
  26. Lorri Mcgahey

    https://clubs.london.edu/click?r=https://thehighriseco.shop

    May 27, 2021 at 02:24 | Report abuse | Reply
  27. collision experts lemon grove

    Everything is very open with a really clear description of the issues. It was really informative. Your website is very helpful. Thanks for sharing!

    https://www.lolinez.com/?https://ocrv.info/rv-repair-shop-la-habra-california

    May 27, 2021 at 03:21 | Report abuse | Reply
  28. Tembepteriope

    tadalafil online https://cttadalafil.com/ side effects of tadalafil tadalafil blood pressure cialis without a prescription

    May 27, 2021 at 03:47 | Report abuse | Reply
  29. bus repair near me

    https://rosreestr.gov.ru/bitrix/redirect.php?event1=&event2=&event3=&goto=https://ocrvcenter.org/rv-repair-shop-diamond-bar-california

    May 27, 2021 at 05:28 | Report abuse | Reply
  30. RV Camera Near Me

    I blog frequently and I truly thank you for your content. This article has truly peaked my interest. I will book mark your site and keep checking for new details about once a week. I subscribed to your Feed too.

    https://www1.arbitersports.com/Content/HideMobileAlerts.aspx?redirectUrl=https://ocrvexperts.com/rv-repair-shop-woodland-hills-california

    May 27, 2021 at 07:00 | Report abuse | Reply
  31. RV Plumbing Riverside

    Greetings, I do think your website could be having internet browser compatibility problems. Whenever I take a look at your site in Safari, it looks fine but when opening in I.E., it's got some overlapping issues. I just wanted to provide you with a quick heads up! Aside from that, fantastic blog!

    https://intranet.secure.griffith.edu.au/s/redirect?rank=10&collection=on-campus-search&url=https://ocrv.art/rv-dent-repair-near-me

    May 27, 2021 at 07:13 | Report abuse | Reply
  32. horse trailer remodel

    Howdy! I could have sworn I’ve been to this web site before but after looking at some of the articles I realized it’s new to me. Anyways, I’m certainly delighted I came across it and I’ll be book-marking it and checking back frequently!

    https://www.tinyportal.net/proxy.php?request=https://ocrvmotorsports.com/durastar-collision-repair-shop-near-me

    May 27, 2021 at 13:13 | Report abuse | Reply
  33. couch upholstery repair near me

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

    http://www.gmwebsite.com/web/redirect.asp?url=https://theocrv.com/moving-truck-collision-repair-shop-near-me

    May 27, 2021 at 14:13 | Report abuse | Reply
  34. Forklift Tires Orange County

    http://pcsafer.inews24.com/log/link.asp?tid=web_log&adid=57&url=https://forkliftswildwestlifttrucks.com/rialto-forklifts/

    May 27, 2021 at 17:46 | Report abuse | Reply
  35. Used Forklift Repair California

    http://d-click.abnt.org.br/u/15007/839/7593/11704_0/4a0ff/?url=http://forkliftswildwestlifttrucks.com/long-beach-forklifts

    May 27, 2021 at 18:35 | Report abuse | Reply
  36. RV Interior Remodeling Near Me

    https://www.adultwork.com/SetReferrerCookie.asp?SelUserID=602668&ReferringURL=&TargetURL=https://ocrv.world/rv-repair-shop-chino-hills-california

    May 27, 2021 at 19:19 | Report abuse | Reply
  37. RV Center Riverside

    https://www.sunzu.com/link/?url=https://ocrv.life/rv-driver-seat-repair-near-me

    May 28, 2021 at 00:22 | Report abuse | Reply
  38. EncoxHtf

    cheapest cialis on the web https://cialishav.com/ – cialis coupons 5 mg cialis

    May 28, 2021 at 01:49 | Report abuse | Reply
  39. RV Technician Los Angeles

    I blog often and I seriously appreciate your information. This article has truly peaked my interest. I will book mark your blog and keep checking for new information about once a week. I opted in for your RSS feed as well.

    /

    May 28, 2021 at 03:19 | Report abuse | Reply
  40. Social Media Marketing Businesses

    https://creativa.su/away.php?url=https://masternearme.com

    May 28, 2021 at 05:03 | Report abuse | Reply
  41. RV Collision Repair California

    Greetings! Very useful advice in this particular post! It's the little changes that make the largest changes. Thanks a lot for sharing!

    http://kanazawa-navi.com/navi/rank.cgi?mode=link&id=725&url=https://web-movimento.it/viewtopic.php?id=50759

    May 28, 2021 at 07:00 | Report abuse | Reply
  42. Digital Marketing Consultant Near Me

    Oh my goodness! Amazing article dude! Many thanks, However I am encountering troubles with your RSS. I donít understand why I can't subscribe to it. Is there anybody having the same RSS issues? Anybody who knows the answer can you kindly respond? Thanx!!

    http://sns.51.ca/link.php?url=bestlocalnearme.com

    May 28, 2021 at 10:35 | Report abuse | Reply
  43. remodel center

    This is a topic that's close to my heart... Best wishes! Exactly where are your contact details though?

    /

    May 28, 2021 at 14:12 | Report abuse | Reply
  44. collision repair riverside ca

    /

    May 28, 2021 at 15:18 | Report abuse | Reply
  45. oc body shop

    http://www.e-tsuyama.com/cgi-bin/jump.cgi?jumpto=http://mastartupinternet.fr/hello-world/comment-page-546/

    May 28, 2021 at 16:14 | Report abuse | Reply
  46. RV Slide Out Los Angeles

    /

    May 28, 2021 at 17:36 | Report abuse | Reply
  47. RV Fabrication Near Me

    Good article. I'm going through a few of these issues as well..

    https://www.center.quilt.idv.tw/uchome/link.php?url=https://theprivatepa.com/2015/09/08/427/

    May 28, 2021 at 17:52 | Report abuse | Reply
  48. rv camping in orange county ca

    https://glowing.com/external/link?next_url=https://incipincip.com/resep-memasak-terong-krispi

    May 29, 2021 at 01:19 | Report abuse | Reply
  49. High Top Van Repair

    http://www.funny-games.ws/myspace.php?url=https://www.fleetservicesocrv.com/chevrolet-high-top-van-repair-shop-near-me

    May 29, 2021 at 06:35 | Report abuse | Reply
  50. Airport Van Repair Shop Near Me

    https://www.imp.mx/salto.php?va=https://commercialrepairshop.com/celebrity-van-repair-shop-near-me

    May 29, 2021 at 07:01 | Report abuse | Reply
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

Leave a Reply to Used Forklift Repair California


 

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.