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Eating Soy May Turn on Genes Linked to Cancer Growth

Soybeans are the most widely used, least expensive, and least caloric way to get large amounts of protein. You can eat soybeans in many forms, including tofu, the beans themselves (also called edamame), soy milk, miso, and soy powder.

Soy foods have a lot of isoflavones, which are weak estrogen-like compounds found in plants. Because estrogen can promote the development, growth, and spread of breast cancers, doctors have worried that eating a lot of soy foods or soy isoflavones (which can be taken as a dietary supplement) might worsen the prognosis of women diagnosed with breast cancer.

While past research results have been mixed, a small study done by researchers at the Memorial Sloan Kettering Cancer Center and Weill Cornell Medical College suggests that for some women, adding a medium amount of soy to their diets turns on genes that can cause cancer to grow.


https://www.breastcancer.org/research-news/soy-may-turn-on-genes-linked-to-cancer

https://www.clickatlife.gr/your-life/story/100812/sogia-kai-genetiki-tropopoiisi-ti-prepei-na-gnorizoume


40 mg of isoflavones per day is the equivalent of about 2 servings of soy per day.

There are some reasons not to conclude that soy causes childlessness.

The finding for never becoming pregnant was 1.13 (1.02, 1.26) for women eating 40 mg of isoflavones per day compared to those eating only 10 mg. This is barely statistically significant. (src)

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A 2006 review of six meta-analyses on soy and cholesterol levels concluded, “In summary, the systematic reviews suggest that the effect of [a diet containing isolated soy protein with] around 90 mg/day of isoflavones is to reduce LDL cholesterol. (src)
How much soybean and soy products should I eat? (Recommended intake)