Chocolate makes you skinny?

Interesting article today in the Times about a study linking frequent chocolate eating to a lower BMI.

"The people who ate chocolate the most frequently, despite eating more calories and exercising no differently from those who ate the least chocolate, tended to have lower B.M.I.’s. There was a difference of roughly five to seven pounds between subjects who ate five servings of chocolate a week and those who ate none, Dr. Golomb said."