Soy foods, particularly in their natural forms like tofu and tempeh, are beneficial and can actually reduce the risk of breast cancer. Contrary to popular belief, women, including those diagnosed with breast cancer in Asia, are encouraged to consume soy due to its plant estrogens, known as phytoestrogens. The misconception that soy is harmful stems from misunderstandings about estrogen's role in certain cancers, but the reality is far more nuanced.