9. Drinking fat-free milk

It may seem to be same as milk just without the fat, but it actually isn’t. Zero-fat milk is not even close to regular milk in terms of usefulness. When fats are extracted from milk, vitamins go with them, replaced by synthetic substances that aren’t quite good for you. Many manufacturers “strengthen” fat-free milk by adding milk powder, which may oxidize the cholesterol in milk. There isn’t any clinical evidence yet, but animals consuming oxidized cholesterol have been known to have experienced a build up of arterial plaque that could increase the risk of heart attack.