Milk from grass-fed cows may be better

If milk does the heart good, it might do even more if it comes from dairy cows grazed on grass instead of on feedlots, according to a US study.

Earlier studies have shown that cows on a diet of fresh grass produce milk with five times as much of an unsaturated fat called conjugated linoleic acid (CLA) than cows fed processed grains.
Studies in animals have suggested that CLAs can protect the heart, and help in weight loss.