Over the past three decades, obesity rates in the US have more than doubled for children and tripled for adolescents ́ and a startling 70% of adults are now obese or overweight. The result has been a widening epidemic of obesity-related health problems, including coronary heart disease, high blood pressure, stroke, and Type 2 diabetes. While discussions about this spiraling health crisis have tended to focus on the need for more exercise and individual...