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Is soy safe?

Toby Smithson
Nutrition & Dietetics

Soy is considered a safe food and has been consumed for centuries by people in Asia as well as by vegetarians in the United States. There is no clinical evidence that has shown soy to be unsafe in all populations. There has been some debate over safety for women diagnosed with breast cancer but the American Cancer Society has stated soy foods can be safely consumed after a diagnosis of breast cancer. There is also evidence that soy intake may actually improve prognosis of breast cancer survivors.

Dr. David L. Katz, MD, MPH
Preventive Medicine
There is no convincing evidence of adverse health effects in humans from consuming soy. Traditional healthy Asian diets generally use minimally processed, whole, or fermented soy foods, such as soy milk, tofu, miso, edamame, and tempeh. Concerns about increased cancer risk because of high exposure to soy relates to processed soy products, which contain ingredients other than soy.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.