Recently, there have been reports that female Drinking soy milk all year round can cause breast cancer . The reason is that ingesting a large amount of phytoestrogens can lead to breast cancer, and ingesting a sufficient amount of phytoestrogens can cause breast enlargement. However, at the same time, when breast duct epithelial cells are stimulated, they may develop from normal development to abnormal proliferation, which may lead to cancer. Soy products contain a large amount of phytoestrogens, mainly soy isoflavones. The phytoestrogens ingested by adult women have only 50% binding capacity with estrogen receptors. The unabsorbed phytoestrogens accumulate in the human body, causing high estrogen in the human body and leading to the risk of breast cancer.
This view has been widely circulated on the Internet. Many female compatriots, especially breast cancer patients, have changed their minds about beans since then and completely say BYEBYE to soy foods. In this regard, Chairman of the Breast Disease Branch of the Guangdong Provincial Medical Association and Sun Yat-sen Memorial Hospital of Sun Yat-sen University Hospital Professor Su Fengxi, director of the Department of Breast Cancer Medicine, said that the claim that drinking soy milk can cause breast cancer has no scientific basis and is untenable. According to an article published in the world's authoritative medical journal "Cancer" in 2008, soy isoflavones in soybeans not only do not increase the risk of breast cancer, but actually play a significant protective role against the potential risk of breast cancer and are helpful for the recovery of breast cancer patients.
Phytoestrogens ≠ animal or chemically synthesized estrogens
Professor Su Fengxi said that because the cause of breast cancer is related to excessive estrogen, many female compatriots hear estrogen discoloration. In fact, there is no direct relationship between phytoestrogens and breast cancer. There is evidence that phytoestrogens have a dual role of protecting and promoting breast cancer cells. Whether the relationship between phytoestrogens and breast cancer is protective or promoting depends on many factors, including the exposure time of phytoestrogens, individual metabolic differences, hormonal environment, whether the phytoestrogens ingested come from natural foods or supplements, and the food growing process. It is not recommended for breast cancer patients taking tamoxifen to use phytoestrogen supplements or purified phytoestrogens, but natural beans and soy products are safe for breast cancer patients.
In addition, the phytoestrogens in soybeans have different effects than estrogen derived from animals or chemically synthesized. Although soy isoflavones in soybeans have the effect of animal estrogen, they promote Breast hyperplasia The effect is less than one thousandth of animal estrogen. It can not only improve menopause It also has a good anti-cancer effect. Therefore, soy isoflavones have been widely used in the treatment of menopausal syndrome in recent years. In addition to breast cancer, soy isoflavones stomach cancer , prostate cancer, colon cancer and ovarian cancer All have the effect of reducing risk.

Cailey 