Consumer Health: Soy and breast cancer risk

It once was thought that soy foods increase the risk of breast cancer. However, studies show that a lifelong diet rich in soy foods reduces the risk of breast cancer in women. In addition, soy contains protein, isoflavones and fiber — all of which provide health benefits.

So where did the idea come from that soy increases breast cancer risk?Learn more about soy and breast cancer from Katherine Zeratsky, a Mayo Clinic registered dietitian nutritionist.