This is a good point. If we compute the # of calories per dollar obtained from a fast food meal, it is much cheaper than the # of calories per dollar obtained

This is a good point. If we compute the # of calories per dollar obtained from a fast food meal, it is much cheaper than the # of calories per dollar obtained from fruits and vegetables. $1.00 for a burger and fries vs $1.00 a grapefruit; at least a couple hundred calories vs. 50 calories...