Why Do I Get A Headache When I Stop Drinking Coffee?


4 Answers

Simon Davies Profile
Simon Davies answered
Coffee, tea and cocoa beans all contain the chemical caffeine. This chemical has a similar structure to a chemical in the human brain called adenosine. Adenosine is released by the body when it is tired. It attaches to specific sites in the brain to slow down nerve cell activity to bring on drowsiness and makes the blood vessels in the brain wider (dilate) to increase the amount of oxygen taken to the brain while the body sleeps.

Caffeine prevents this taking place by binding to the sites and blocking the adenosine. This prevents the drowsy feeling but also the brain gets used to not having the blood vessels dilated when the body is tired due to regular caffeine consumption.

When we decide to give up caffeine this is reversed. Adenosine freely attaches to previously blocked sites and the blood vessels in the brain dilate more than ever, causing splitting headaches.
thanked the writer.
Anonymous commented
I have given up coffee for the past three days and I am having long does this last?
Megan goodgirl Profile
Megan goodgirl answered

Its the caffeine. Your body is so used to it.

Roberta Paxon Profile
Roberta Paxon answered
Its your body tellin you your addicted to the caffine

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