Drinking three or more caffeinated drinks per day may trigger a migraine. One or two cups of coffee, or other caffeinated beverages, were not linked to a migraine on that day for regular caffeine drinkers, researchers have found. However, three or more were linked to a greater risk of experiencing a migraine that same day. People who do not regularly consume caffeine raised their risk of a migraine by having just one or two doses of caffeine in a day. Migraines are the third most prevalent...