Good Carbs, Bad Carbs

It’s not true, as some dieters believe, that all carbs are bad carbs. The key variable, according to this encouraging story, is the glycemic index, a ranking of foods according to how rapidly their sugars are released into the bloodstream. And if you like the term "glycemic index," you’ll love the term "glycemic load," a new measurement developed by researchers at the Harvard School of Public Health. So what should we eat be eating? Beans, for starters.