Researchers are still investigating and health advocates are still debating the benefit and risks of food and supplements made from soybeans. Some say soy, a good source of protein that is relatively low in carbohydrates, is a nutritional boon, preventing illnesses from heart disease to cancer. Others urge caution, pointing out that soy's natural estrogens may stimulate certain hormone-fueled cancers, such as breast and prostate cancer. A close look at the data reveals no easy answers, but there are indications that moderate amounts of soy from foods (such as tofu and soymilk made from whole soy) are safe, while highly processed soy products, especially supplements, might be riskier.
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