It is well known that if you take a snapshot of the population, about 18% of women and 6% of men suffer from migraine headaches.   However, a report by Dr. Stewart and his colleagues in the latest issue of Cephalalgia indicates that cumulative lifetime migraine incidence is much higher – 43% of women and 18% of men have migraine headaches at some point in their lives.  Migraine incidence peaked between the ages of 20 and 24 in women and 15 and 19 in men.  In 75% of cases migraine started before the age of 35.