In the past, the first law of thermodynamics was often used to explain the control of body weight. Simply put, if energy intake (food) exceeds energy expenditures (exercise/activity), then weight gain occurs. Conversely, reducing intake and increasing expenditures was believed to be the key to weight loss. For years, doctors and researchers believed this simple theory to be the answer. We now know, however, that other factors are involved. Some people can exercise religiously, reduce food intake and still not lose weight. And, of course, we all know people who can eat whatever they want and never gain a pound.

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One of the most talked about consequences of obesity today is the development of diabetes. In fact researchers have coined a new term for this association: diabesity. According to a report from the Centers for Disease Control, diabetes has officially reached epidemic proportions. Over 17 million Americans have diabetes, which represents a 49 percent increase in the past decade!

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