Casein causes cancer in human?

Should we be worried about casein and hormones in milk?
Casein is the main protein in milk. There is no strong evidence to show this causes cancer in humans. 

According to the International Agency for Research on Cancer of the World Health Organization and the U.S. National Toxicology Program, the milk protein casein isn’t a known or possible carcinogen, which is a substance with the ability to cause cancer in humans. There isn’t reliable evidence indicating that casein causes cancer in humans. Studies haven’t shown a correlation between dairy consumption and cancer risk in humans.

Dairy products do contain some hormones. But the amount is very small compared to what the body makes naturally. There is no strong evidence to show that hormones in milk could go on to cause cancer.   

Some countries use a hormone called bovine somatotrophin (BST) to speed up or increase the production of milk or meat. But in the UK and the rest of Europe, there is a ban on farmers using this hormone. This ban is on animal welfare grounds, not because there is any proven effect on human health.  

The Food Standards Agency regulates the content of dairy products, including milk. This set of standards makes sure these products are safe to eat and drink.