Flax Seeds Can Help Breast Cancer Patients

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  • calamtykel
    calamtykel Member Posts: 1,187
    edited July 2010

    Thank you for posting this study! :)  My naturopath has me on flax and I was a little worried initially, although my oncologlist said it is okay.  It's good to see something beneficial printed about it.

  • somanywomen
    somanywomen Member Posts: 872
    edited July 2010

    While reseaching benefits of flaxseeds a couple of weeks ago, I found the following info.  The way to get the most benefit from flaxseeds is to buy them whole and only grind (you can use a coffee grinder) the amount that you plan to use at that time...This way, you get the most benefit, and the article also said to never be fooled to buy products with whole flaxseeds because our bodies do not break them down, so you get no benefits....As far as flaxseed oil, the benefit is also lessened by the process and to either buy them ground or for best benefit to grind them as per use your self.....

  • Husband11
    Husband11 Member Posts: 2,264
    edited July 2010

    Can anyone find the actual study referred to in the article? 

    Molecular Nutrition & Food Resource journal.  

    I'd like to know what it says, and what work was done.  I hate simply reading someone elses take on research.  I'd like to know what was studied and how.

  • ruthbru
    ruthbru Member Posts: 57,235
    edited July 2010

    I've read that flaxseed was NOT good for estrogen positive ladies to take; promotes a pseudo-estrogen effect. ???

  • bygracealone
    bygracealone Member Posts: 183
    edited July 2010


    In 2008 I did some research on flaxseed. This was before my BC dx. What I found agrees with Somanywomen. Ground flaxseed is the best. I have been grinding my own and it is easy. The seed keeps well in the refrigerator ground and seeds.

    Regarding ER+ women this is what I found

                            Who Should Not Consume Flaxseed
    Lignans have antiestrogen properties similar to those of drugs such as tamoxifen. Because there is no published research on the interaction of these drugs with flax, Thompson recommends that people who are taking this therapy speak to their physicians before regularly adding flax to their diets. Pregnant and breastfeeding women should not eat large quantities of flax until more is known about its effects on fetuses and nursing infants.

    Unfortunately I did not make note of where I found this information.

  • ruthbru
    ruthbru Member Posts: 57,235
    edited July 2010

     This is from the BCO archives; dated August 2008.

    QUESTION: Does flaxseed oil help with the prevention of breast cancer? If yes, how? How much should one take for it to be effective?

    ANSWER:Flaxseed contains a high concentration of lignans, which can act like very weak estrogens. The theory goes like this: If your body sees these weak estrogen-like substances instead of your own body's strong estrogen, then the bottom line is less estrogen effect on your body's tissues. This may be particularly important for breast tissue, which likes estrogen around and tends to grow in response to it. Keep in mind that this is theory. It remains unproven, even though you will find many people having many strong ideas about this. On the other side of the fence are those who think that it's a bad idea to add any estrogen-like substances into your body. They think it's best to avoid anything, in whatever form, that might stimulate growth of breast tissue. Flaxseed also contains fiber and alpha-linoleic acid, an omega-3 essential fatty acid, which helps lower cholesterol.

    A tablespoon a day is what the proponents suggest; "none" is what the concerned folks would tell you. Because this is a tough one to study, we might never come to the "right" answer on this, at least no time soon.

    -Marisa Weiss, M.D.

  • hrf
    hrf Member Posts: 3,225
    edited August 2010

    I have attended a number of sessions with nutritionists and doctors regarding diet and when the issue of flaxseed came up, the response is always the same which is "we don't know"  There is no absolute scientific evidence out there. People are only speculating on possibilities. I am proof that flaxseed does not help and in fact might contribute to breast cancer.

    After my first cancer dx (TN), I learned about the health benefits of freshly ground flaxseed and so I put a couple of teaspoons into my organic oatmeal every day along with lots of blueberries. I ate this following my few ounces of pomegranet juice. Guess what .... 3 1/2 years later I had a brand new dx of breast cancer -- 100% ES+ (even though I had had my ovaries removed)

    Pardon me for being cynical. Just do what feels right for you but don't expect any miracles. And I still wonder if the flaxseed caused my second bc. No one has proven that it didn't. I don't use flaxseed anymore and I would advise against using it as protection from breast cancer.

  • ruthbru
    ruthbru Member Posts: 57,235
    edited July 2010

    I used flaxseed for a short time after treatment on the advice of a friend who is quite into nutrition. But once I did some research and found out the answer was "we don't know"; I quit, figuring that it was better to err on the side of caution.

  • rgiuff
    rgiuff Member Posts: 1,094
    edited August 2010

    I've been to a few conferences on nutrition and how it affects diseases in the body.  The understanding I have of flaxseed is that it has a weak estrogen effect which can compete with and crowd out our stronger bodily estrogen at the receptor sites.  Yes, tamoxifen does the same thing without any estrogenic effect on the breast cells.  Based on this understanding, I would think that a woman on tamoxifen taking any estrogenic substances would have bodily estrogens, tamoxifen and plant estrogens such as flax and soy all competing for that estrogen receptor.  Which one would win and get in most of the time?  Probably can't ever be proved or believed without serious clinical trials.  But tamoxifen is supposed to beat our regular estrogen from getting into the cells, according to researchers who've done clinical trials on that..

    For somebody not on tamoxifen who doesn't want to take anything else, such as AIs, I would think that flaxseed and other similar substances would be a good thing as they would block out some of the stronger bodily estrogens. For somebody on an AI, where the body is cut off from making any estrogen, I would think that plant estrogens might add back a little weak estrogenic effect.

    Being on tamoxifen, I use flaxseed for its health benefits and don't worry too much about it being mildly estrogenic as I figure the tamoxifen should be the strongest substance at getting to the breast cells.  This is the reason why I agreed to take tamoxifen, I'm trusting that it does what researchers have said it will do.

  • kjbrown92
    kjbrown92 Member Posts: 115
    edited August 2010

    When I first saw the breast surgeon, she told me to not have any flaxseed for a month (along with no soy, which I was already doing, and no caffeine, which I was already doing). I use it as an egg substitute for baking since my son is intolerant to eggs. So why would she tell me to go off flax, if it is supposed to be beneficial?

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