BURGERS AND FRIES, BEST THING FOR YOU: Scientists had men eat 5 burgers a week — what happened to their cholesterol was surprising. “Of 23 men who ate five burgers per week for five weeks, the researchers found that adding high-fat ground beef (around 25% fat) or low-fat ground beef (about 5% fat) didn’t harm blood vessels. The positive changes from the high-fat beef may even be linked to lower cholesterol.”