Could the two be linked? Are obese people less able to learn or are those who are less able to learn more likely to be obese?
poor people are often more likely to be obese cus they're on foodstamps (perhaps..not always) and so they use potatoes and rice and they spread out the meal for family by adding the creamed soups and yada yada...a meal to stick to the ribs and fill bellies of all, but full of starch.