ATLANTA, Georgia (CNN) -- Former President Bill Clinton said his weight problem and brush with death are the catalysts behind his foundation's initiative of tackling childhood obesity. Once famous for his love of fast food, Clinton told CNN's Dr. Sanjay Gupta that bad health habits since childhood led to his September 2004 quadruple bypass surgery. That operation, he said, opened his eyes to a larger issue, and he turned his attention to the problem of overweight American children. "The brush with death I had maybe had the biggest impact of all," Clinton recalled. "I realized that one more time I've...