Sean Milliken, who appeared in TLC's "My 600-lb Life", is dead. Three years ago, Milliken was at the show's poster. He spoke frankly about his emotional difficulties and how he turned to food as a refuge. At the time, he was confined to a bed and weighed more than 900 pounds. According to Milliken's father, Matt, Sean would have died as a result of an infection. He was 29 years old.