FOLLOW THE SCIENCE: Is Low Fat Dairy Healthier? Puhleez.

Scan the dairy case of any grocery store, and you’ll find rows upon rows of products with varying levels of fat. Nonfat, low-fat, whole: What’s the healthiest option?

If you consult the U.S. dietary guidelines or health authorities like the American Heart Association or the World Health Organization, the answer is clear: Choose a fat-free or low-fat version.

This recommendation stems from the idea that full-fat dairy products are high in saturated fats, so choosing lower-fat versions can reduce your risk of heart disease, said Dr. Dariush Mozaffarian, a cardiologist and professor of medicine at Tufts University.

But that guidance goes back to 1980, when the first edition of the Dietary Guidelines for Americans was published, he said. And since then, most studies on the health effects of dairy fat have failed to find any benefits of prioritizing low-fat versions over whole, Dr. Mozaffarian said.

Nina Planck pointed this out in her excellent book, Real Food, and it remains true.

Related: How the Sugar Industry Shifted the Blame to Fat.