Cottage cheese peaked in the early 1970s, when the average American ate about 5 pounds of it per year, according to the U.S. Department of Agriculture. iStockphoto hide caption

itoggle caption iStockphoto

Eating some foods high in saturated fat is not necessarily going to increase your risk of heart disease, a study shows, contrary to the dietary science of the past 40 years. Cristian Baitg Schreiweis/iStockphoto hide caption

itoggle caption Cristian Baitg Schreiweis/iStockphoto

A customer shops for milk at a Safeway in Livermore, Calif. Although it may seem counterintuitive, there's growing evidence that full-fat dairy is linked to reduced body weight. Justin Sullivan/Getty Images hide caption

itoggle caption Justin Sullivan/Getty Images

The recent yogurt boom of upstate New York has meant more jobs in places like the Chobani plant in South Edmeston, but it has not led to a bigger dairy herd in the state. Mike Groll/AP hide caption

itoggle caption Mike Groll/AP

European dairy farmers spray police officers with milk during a demonstration outside the European Parliament in Brussels on Monday. Geert Vanden Wijngaert/AP hide caption

itoggle caption Geert Vanden Wijngaert/AP