Folic acid consumption and breast cancer
This large study, conducted in Shanghai, China (Cancer Res, 2001;61:7136-7141) looked at 1,321 women who were diagnosed with breast cancer and compared them with 1,382 healthy subjects between the ages of 25 and 64. The study found a direct inverse relationship between the amount of folic acid women consumed and the incidence of breast cancer.
Folic acid is a B vitamin found mainly in liver, wheat germ and green leafy vegetables. Researchers found an even more pronounced inverse relationship when considering women who consumed folic acid in addition to other nutrients that work synergistically with this vitamin. These nutrients include the amino acid methionine, and the vitamins B12 and B6.