There is an obesity plague in America that costs the nation as much as $147 billion -- and an untold number of lives -- every year. Nearly two-thirds of American adults are either overweight or obese. Childhood obesity is triple what it was a generation ago. Together, they add up to a public health crisis that feeds a $60 billion industry of products, services, diets and foods designed to help people lose weight. CNBC correspondent Scott Wapner reports on the war on fat, with intimate profiles of Americans struggling to overcome obesity, some of whom have resorted to surgery. He takes viewers behind the scenes of a pharmaceutical company developing a cutting-edge drug that could be a medical and financial blockbuster, and goes inside a weight loss boot camp called The Biggest Loser Resort - an enterprise that is helping some lose pounds, and others make money. The obesity crisis has placed a crushing burden on the nation"s healthcare system and has even convinced some in the medical community that the current generation of American children may be the first to have a shorter life expectancy than their parents. In this CNBC original documentary, you"ll see the real cost of obesity, and find out who"s profiting from it, too.