Whether the use of hormone-containing beauty and health products by women can cause disease varies from person to person. In general, estrogen-containing products or foods have a mild effect on certain breast diseases such as breast enlargement and breast cancer. Breast cancer patients and people with high risk factors (pre-cancerous diseases, family history of breast cancer, etc.) should avoid these products or supplements. Daily diet should follow the principles of healthy diet: a reasonable mix of starch, protein, fat and crude fiber, low fat, less fried and pickled products, less hormone-fed fish and poultry, etc. The medication should be guided by a specialist. Many patients ask whether drinking soy milk is beneficial for breast disease. Beans contain an estrogen-like substance called isoflavones, the main component of which is trihydroxyisoflavones (genistein). Its effects are twofold: most believe that isoflavones antagonize estrogen by competing for receptors, which has a protective effect on the breast; however, some studies have found that low concentrations of isoflavones promote the growth of breast tumors. To date, there is no authoritative and unified conclusion on whether isoflavones are beneficial or detrimental in the prevention or treatment of breast cancer. Estrogen is closely related to the development and progression of breast hyperplasia and breast cancer. My opinion is that breast cancer patients (especially estrogen-dependent breast cancer) and those at high risk of developing breast cancer should not consume too much. Consumption of soy foods and supplementation with the phytoestrogen soy isoflavones is not recommended.