Coffee

Roland Griffiths, one of the world’s leading researchers of mood-altering drugs, and the man most responsible for getting the diagnosis of “caffeine withdrawal” included in the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), the bible of psychiatric diagnoses, told me he hadn’t begun to understand his own relationship with caffeine until he stopped using it and conducted a series of self-experiments. He urged me to do the same.
--- The Guardian---
* Coffee problems
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