Isoflavone consumption linked to decrease in mortality for some breast cancer patients

An epidemiological analysis of data from more than 6,000 American and Canadian women with breast cancer finds that post-diagnosis consumption of foods containing isoflavones – estrogen-like compounds primarily found in soy food – is associated with a 21 percent decrease in all-cause mortality. This decrease was seen only in women with hormone-receptor-negative tumors, and in women who were not treated with endocrine therapy such as tamoxifen.