Caffeine headaches are a common problem, especially for people who consume large amounts of caffeine. Caffeine is a stimulant that can cause blood vessels to narrow, which can lead to headaches. There are a number of things that you can do to avoid caffeine headaches, including:
1. Limit your caffeine intake. The amount of caffeine that can cause headaches varies from person to person. However, most people should limit their caffeine intake to less than 400 milligrams per day. This is equivalent to about four cups of coffee or ten cans of soda.
