Clinical nutritionist Cara Anselmo of Memorial Sloan-Kettering’s Evelyn H. Lauder Breast Center says that high levels of alcohol consumption have been associated with oral, esophageal, larynx, and breast cancers. However, drinking alcohol in moderation — one drink per day for women and two drinks per day for men — is safe for cancer survivors.
Studies suggest that eating a moderate amount of soy, which contains a substance called phytoestrogen, may reduce the risk and recurrence of breast cancer and other hormone-sensitive cancers. Anselmo recommends eating a moderate amount of foods that contain soy such as tofu, edamame, or flax seeds, instead of taking soy supplements.
There is no evidence that taking dietary supplements can reduce a person’s risk of cancer. Detailed information about the potential benefits and risks of many supplements can be found on Memorial Sloan-Kettering’s About Herbs website. Anselmo says survivors should opt for whole-food sources of nutrients instead of supplements whenever possible.