DIGITAL VISION / GETTYIMAGES
People the world over are getting fatter. Today more than one-third of adults in the United States are obese, and the rates in other industrialized countries are catching up. Obesity is no longer considered a condition particular to affluent societies—it has now spread to developing nations such as China and India, resulting in a global health crisis. According to the World Health Organization, 500 million adults worldwide are now obese, and this number is expected to climb well into the foreseeable future. Obesity is so problematic because it poses serious threats to personal health and well-being. Obese people are at an increased risk of chronic and potentially debilitating diseases such as cardiovascular disease and stroke, certain forms of cancer, type 2 diabetes, osteoarthritis, and asthma, ...
