Memory is one of the most important functions of the brain, and problems with it are becoming increasingly more common, even among teenagers and young adults. Psychiatrist and founder of Amen Clinics Dr. Daniel Amen shows how one can improve one's memory and even rescue it if it's headed for trouble. Discovering some of the most common, and one of the most surprising, causes of memory loss and when one should be concerned. Dr. Amen shares seven foods and supplements.