Headaches are a painful sensation in the head and may be due to a number of reasons ranging from a ponytail hair style to stress to lack of sleep. Sometimes it may indicate some underlying health condition. But most of the time it is harmless and not a cause for worry. Triggers are often simple and innocuous things that we may not even recognise as being the cause of our pain. In fact researchers from Tel Aviv University-affiliated Meir Medical Center say that gum-chewing teenagers and younger children as well are giving themselves headaches with this habit. They are hopeful