The main connection between dairy and prostrate cancer is IGF-1. IGF-1 stands for Insulin-like growth factor ( also called somatomedin) is a polypeptide protein hormone that is mainly produced by the liver. IGF-1 helps to stimulate growth in childhood and helps build and repair muscle as adults.
Dairy products increase IGF-I in the blood. In turn, IGF-I promotes cancer cell growth. Milk is intended to help a calf’s overall growth so there is no surprise there’s a correlation between the rapid growth of a calf’s cells and an increase of cancer cell growth in humans.
Below is a link from the US National Library of Medicine National Institutes of Health regarding IGF-1 and the risk of prostate cancer.
Cutting dairy and meat (see cancer research grid below) out of your diet can significantly decrease your risk of getting cancer. Please look into going vegan as you won’t only be saving animals but you will also extend your life by eating healthier.