Search Terms: breast cancer soy, soy and breast cancer, breast cancer risk, breast cancer preventionBreast Cancer Soy: Soy Foods May Benefit Breast Cancer Survivors
By Keith D. Bishop, Clinical Nutritionist, B.Sc. Pharmacy - December 9, 2009
Since soy has estrogenic properties many physicians have advised women not to eat soy foods. Several human research studies have been published this year demonstrating the safety of soy foods.
The Shanghai Breast Cancer Survival Study followed 5,042 women
in China. The breast cancer survivors were ages 20 to 75 and were followed for an average of four years. Researcher
found that the higher a women’s soy food intake, the lower her chances of cancer recurrence and death. Women with
the highest intake of soy had a 29% lower risk of death and a 32% lower risk of breast cancer recurrence compared
with women with the lowest intake of soy foods. Soy did not appear to stimulate estrogen receptor positive (ER+) or estrogen receptor negative (ER-) breast cancers. Click here to email this page to a friend.
This study supports research from UC Berkeley and published in
the journal Breast Cancer Research and Treatment. The Berkeley study followed 2,000 U.S. breast cancer survivors
and also found that higher soy intake was linked to lower rates of breast cancer
recurrence.
The drug tamoxifen was appeared to improve survival only in
women who had low or moderate soy food intake. Researchers believe tamoxifen and soy may compete with each other
for the same estrogen receptors.
Women with the highest intake of soy food had a lower risk of
death and breast cancer recurrence than women with the lowest intake of soy food and took
tamoxifen.
Reference Source: Journal of the American Medical Association,
December 9, 2009
Natural Cancer Treatment
Pearl
Yes, according to this research article, high soy food intake
may provide better benefits than the drug tamoxifen.
Both of these studies evaluated soy food intake and not
concentrated soy extract supplements. It appears to be safe to eat soy beans, soy products and tofu and drink soy
milk. I would wait on taking soy extract supplements until additional research has been
performed. Researchers are still cautious and are not recommending women to significantly increase the amount of soy they eat until additional research is supports this study. Click here to read more Alternative Breast Cancer Treatment articles.
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