One of the subjects of the TLC reality television show, "My 600-Lb. Life," has died while filming an episode that aired Wednesday. Robert Buchel, of New Jersey, struggled with compulsive eating and food addiction for most of his life, ultimately hitting 842 pounds and suffering from lymphedema, or swelling in the legs, as a result. He suffered a fatal heart attack in November. Buchel was 41 years old. InsideEdition.com's Keleigh Nealon (http://twitter.com/KeleighNealon) has more.