why does coffee make my head hurt?

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Why does coffee give me a headache?

This brings on the headache. Caffeine has vasoconstrictive properties, meaning that blood vessels narrow to restrict blood flow, thereby alleviating the pain.


What happens if you drink too much coffee?

Drinking too much coffee can also trigger a headache in some coffee drinkers. The recommended daily dose of caffeine is 400mg or 4 cups of coffee a day. If you exceed this amount you are at risk of a caffeine overdose.


How does caffeine affect the brain?

When caffeine is consumed regularly, the body becomes dependent on its effects. And because caffeine narrows the blood vessels that surround the brain, when consumption is stopped, the blood vessels enlarge. This causes an increase in blood flow around the brain and pressures surrounding nerves.


Can caffeine cause headaches in older people?

A very rare condition called hypnic headaches responds especially well to caffeine. These strike older people, waking them in the middle of the night with severe pain. Doctors typically tell people who get these to have a cup of coffee before bed. Oddly enough, what makes caffeine effective in pain relief can also cause headaches.


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