Over a million people in Britain could be suffering from constant and crippling headaches because of taking too many painkillers according to experts. According to the National Institute for Health and Clinical Excellence (NICE) in guidance to the health service for England and Wales the pills people take to relieve headaches and migraines may be making things much worse The Guardian reported. NICE says that as many as one in 50 people suffering from continual headaches are in reality victims of medication overuse. The problem begins with taking the odd painkiller for tension headaches or migraines which usually works. Some people however