Soy is a protein source that has been getting a lot of attention such as soybeans. We've been told that regularly eating soy-based foods lowers cholesterol, chills hot flashes, prevents breast and prostate cancer, aids weight loss, and wards off osteoporosis. Some of these benefits have been attributed a unique characteristic of soybeans and their high concentrations of isoflavones, a type of plant-made estrogen (phytoestrogen).

Soy has also been investigated as a treatment for hot flashes and other problems that often accompany menopause. In theory, this makes sense. Soybeans are rich in phytoestrogens. In some tissues, these substances mimic the action of estrogen. So they could cool hot flashes by giving a woman an estrogen-like boost during a time of dwindling estrogen levels.

Although soy has many positives, it also has some negative effects. Some people should not eat soy based products including people that have trouble with the thyroid. The soy interferes with the absorption of certain foods.

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