eliz bet edwards is surrounded by loved ones at home as she shares difficult news about her cancer. >>> good evening, everyone. i'm bill weir. last year, there was only one state in the nation colorado with an obesity rate under 20%. shocking. especially when you consider just 14 years ago, there were zero states with a 20% obesity rate. the epidemic has spawned an aggressive search for new treatments, including different forms of surgery that radically alter the way patients eat food. expanding one such surgery to millions more patients. at least three days a week, come sun or bitter massachusetts cold, rashita gets out of bed before work and jogs three miles. every meal of every day she obsesses over avoiding sugar. >> my snacks consist of water crackers and cheese. >> reporter: with this kind of discipline, she has lost 55 pounds over the past five years, a routine not driven by vanity but fear. you see, back when she was a self-described big girl, she learned that aside from the aches and pains, her weight had also given her chronic diabetes. >> i remember my endocrine nologist te