Monthly Archive: January 2020

How Much Caffeine Is Too Much?

January 22 2020

By Andrew Weil, MD And which is healthiest: coffee, tea, or some other caffeine source?   Caffeine is one of the world’s most popular drugs. Once inside your body, it blocks brain receptors for adenosine, a molecule associated with tiredness. Over time, however, the brain chemistry of coffee drinkers changes, triggering production of more adenosine receptors....


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