The natural sugar that is in milk is lactose and that is not really a problem (as long as you are not lactose intolerant of course). The problematic sugar is r

The natural sugar that is in milk is lactose and that is not really a problem (as long as you are not lactose intolerant of course). The problematic sugar is refined fructose. That is the stuff cannot be properly processed by the body and causes all kinds of chaos for your metabolism. Even naturally occurring fructose, such as in fruit, is ok. But once you concentrate it into crystallized sugar or HFCS, it becomes a slow acting poison.