Is Milk Really Healthy for You? Learn the Facts

What About Antibiotics?

No one really knows. Some scientists argue that milk from cows given antibiotics leads to antibiotic resistance in humans, making these types of drugs less effective when you take them for an infection. But this finding has never been proved.

If you’re uneasy, you can purchase antibiotic-free (and typically hormone-free, as well) milk from specialty grocers, such as Trader Joe’s or Whole Foods, or select USDA-certified organic milk, which is available at most supermarkets.

Skim or Whole?

It depends on your taste. While you’ve probably always been told to drink reduced-fat milk, the majority of scientific studies show that drinking whole milk actually improves cholesterol levels, just not as much as drinking skim does.

One recent exception: Danish researchers found that men who consumed a diet rich in whole milk experienced a slight increase in LDL cholesterol (six points). However, it’s worth noting that these men drank six 8-ounce glasses a day, an unusually high amount. Even so, their triglycerides–another marker of heart-disease risk—decreased by 22 percent.

The bottom line: Drinking two to three glasses of milk a day, whether it’s skim, 2 percent, or whole, lowers the likelihood of both heart attack and stroke—a finding confirmed by British scientists.

If you’re dieting, the lower-fat option is an easy way to save a few calories. When it comes to building muscle, though, whole milk may be your best choice: Scientists at the University of Texas medical branch in Galveston found that drinking whole milk after lifting weights boosted muscle protein synthesis—an indicator of muscle growth—2.8 times more than drinking skim did.