Sanjay Gupta, MD, is a practicing neurosurgeon at Emory University Hospital and associate chief of service at Grady Memorial Hospital in Atlanta. He is a columnist for TIME magazine and a Chief Medical Correspondent at CNN and the host of House Call with Dr. Sanjay Gupta. Dr. Gupta also is a contributor to 60 Minutes and appears reguarly on the CBS Nightly News with Katie Couric.