Today so prevalent is the illegal practice among students of taking brain-enhancing prescription-only drugs such as Ritalin to improve their exam performance that leading academics have called in the scientific journal Nature for the drugs to be available over the counter. "Why should there be anything more morally wrong about taking a brain-enhancing drug than eating proper food or getting a good night’s sleep?" they ask. I am not a scientist but there must be a difference between good food and sufficient sleep and a drug that is prescribed to children with attention deficit hyper-activity disorder. Full Article at Times Online