Weight Loss: Diets with high protein content and a low glycemic index may improve overweight people's ability to maintain weight loss, according to a study in the New England Journal of Medicine.

WSJ: Secondhand Smoke May Harm Nonsmokers' Hearing

To come up with his index, Drewnowski ranked foods based on their concentrations of nine essential nutrients (protein, fiber, calcium, iron, magnesium, potassium, vitamins A, C, E).

FORBES: Cheap Foods That Are Good For You

To lower the glycemic index of instant oatmeal, all you have to do is combine it with a little lean protein (add low-fat or fat-free milk or a half-scoop of protein powder after cooking) or healthy fat (top with a tablespoon or two of chopped nuts, which are also good for lowering cholesterol).

CNN: Is instant oatmeal just as healthy as traditional?