A team of Canadian researchers have discovered that too much consumption of milk can increase the risk of prostate cancer. The report, published in the Prostate journal, showed that people who drink 4 X 200 ml glasses of milk have double the risk of prostate cancer. Milk contains Insulin-like Growth Factor 1 (IGF-1 ) which encourage growth as well as prostate cancer and sometimes ovarian cancer also.
Scientists of University College London said earlier that more than thousand years ago people had always avoided milk due to its gastric tendency and stomach problems. This is due to the lack of genes in Europeans to produce lactase enzyme, which helps to break down the milk lactose.