NEW WEIGHT LOSS GUIDANCE.

CECILIA VEGA (ABC NEWS) (Off-camera) We're going to turn now to some new guidelines on weight loss, one about who qualifies for surgery, the other about when you might want to use medication. And joining us right now, chief medical correspondent Dr. Jennifer Ashton, board-certified in obesity medicine. Obviously, we have talked so much about the importance of diet and exercise. Medication doesn't often come into this conversation about weight loss, but they're saying some folks could actually benefit from it. [ABSTRACT FROM PUBLISHER]