an article about health benefits of peanuts and nuts:

"... but as healthy as nuts are, there are about 95 calories in each tablespoon of peanut butter and about 165 in each ounce of nuts."
"... The best way to let nuts and nut butters work for you is to substitute them for equal amounts of calories from refined carbohydrates such as white bread, which can increase you diabetes risk. That way, you benefit twice."

Well, DUH!