John Sarno believes the mind has everything to do with the body. In his best-selling book, Healing Back Pain: The Mind-Body Connection, Sarno declared that back pain is all in the head, noting that backaches, slipped discs, headaches and other chronic pains are caused by emotional distress. He claims that pains are due to the suppression of anger. If the anger is addressed, the pain will disappear. Sarno's follow-up book, The Mindbody Prescription: Healing the Body, Healing the Pain, goes further to say that other emotions including guilt, anxiety, depression and low self-esteem can manifest themselves as physical symptoms including fibromyalgia, migraine headaches, hay fever, colitis, ulcers, acne, and more. Sarno is also the author of Stroke and Mind Over Back Pain: A Radically New Approach to the Diagnosis and Treatment of Back Pain.