The major problem is the complete lack of a theoretical framework for understanding obesity. Current theories are ridiculously simplistic, often taking only one factor into account: •Excess calories cause obesity. •Excess carbohydrates cause obesity. •Excess meat consumption causes obesity. •Excess dietary fat causes obesity. •Too little exercise causes obesity. But all chronic diseases are multifactorial, and these factors are not mutually exclusive. They may all contribute to varying degrees.
