January 31, 2019 -- CBD oil is trendy, but is it really a miracle cure for, well, everything? WebMD's Chief Medical Editor Dr. Michael Smith has the answers. Do the short winter days get you down? You might have seasonal affective disorder. Learn what it is and what to do about it. Ready for the big game? We found some Super Bowl stats that will blow your mind. Got a house full of sick people? Medical Editor Dr. Neha Pathak explains how to keep it clean -- and keep yourself well. Plus, why you should swap juice for a smoothie.