DEAR DOCTOR K: I know we need protein in our diets and that beans are a good source. But I've read that meat is a great source of protein and iron. Which is a better choice?
DEAR READER: Meat is an excellent source of protein and iron, but unfortunately, red meat is also full of saturated fat -- one of the "bad" fats.
Leaner cuts contain less saturated fat, but eating lean red meat still causes you to consume lots of saturated fat. The saturated fat is not always visible: In addition to the layer of fat that may cover a cut of red meat, and any visible fat "marbled" inside the meat, there is plenty of invisible saturated fat. Just because you can't see it doesn't mean it's not there.