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A member asked:
How does caffeine cause withdrawal headaches?
3 doctors weighed in across 2 answers
Bloodvessel dilation: Caffeine withdrawal headache is the result of temporarily increased sensitivity to a natural body chemical called Adenosine which dilates blood vessel to cause headache. When caffeine is being consumed, Adenosine receptors are blocked and the body responds by producing more Adenosine receptors. If no caffeine then body has excessive Adenosine on receptors that dilates blood vessel that createspain.
Answered 3/11/2018
6.3k views
Rebound pain: The exact reason behind the causation of withdrawal headaches from caffeine is not known. Speculation has been done regarding the role of caffeine as well as some commonly used pain killers. These compounds probably make an individual more sensitive to occurrence of pain including headaches.
Answered 12/10/2013
5.5k views
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