Joanna Dolgoff, MD, owner of Red Light, Green Light, Eat Right childhood obesity clinic and author of Red Light, Green Light, Eat Right, explains how an unexplained recent weight gain can affect your health.

Want to know how to look marvelous without splurging so much? Dr. Oz invites three beauty experts to share the smartest ways to save money while looking fabulous starting from your hair and makeup tools to the beauty products you use.