It's clear: Our bodies need fat as part of a healthy diet. Experience Life founding editor Pilar Gerasimo talks with Mark Hyman, MD, about his new book "Eat Fat, Get Thin." Dr. Hyman is a practicing family physician, a nine-time No. 1 New York Times best-selling author (drhyman.com), and an internationally recognized leader, speaker, educator, and advocate in his field. He is the director at the Cleveland Clinic Center for Functional Medicine.