An obsession with diets—all types of diets—for nutrition but mostly for weight loss has been a hallmark of American culture for generations. And sadly, it’s been a zero-sum game for most.Michael Pollan, acclaimed writer, professor of journalism...

It was called "Lighten Up" and that's exactly what the winners of the eight-week weight loss challenge did in spades. The winning team, "Frasier," comprised of four women in their forties, lost more than 63 pounds and nearly 10 percent of their total...