This Essay Was a Short Paper Written about Migraines for My Biology Class

A migraine was once believed to originate in the blood vessels, till recent studies have shown that they are caused by the narrowing of blood vessels themselves, causing the warning signs, and then eventually widening to cause the severe headache. Several causes of the disorder are that of sudden exposure to bright light, eating certain foods, lack of sleep, stress, high altitude, stormy weather, and excessive caffeine or alcohol intake. Although many people may say that migraines are not heredity, they are and can affect anyone to everyone, not depending on race, culture, age, or personality. According to "Migraine," twelve to twenty percent of the population of every country suffers from a migraine.…