Questions tagged [caffeine]

A widely consumed xanthine alkaloid first isolated by Friedlieb Ferdinand Runge in 1820, which functions as a psychoactive stimulant. Caffeine is typically found in sodas, teas, and coffees, as well as a wide variety of other sources.

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Does drinking coffee or tea dehydrate you?

It is widely claimed that despite being made mostly of water, drinking coffee or tea will actually dehydrate you, because the caffeine is a a diuretic. Here is an example from the SFGate news site ...
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Does the coffee plant use caffeine to kill bugs and surrounding plants?

The HUmans are Free article The Coffee Deception: 13 Little Known Facts About Coffee makes the claim that caffeine in the plant is used to kill bugs and surrounding plants. 1. Caffeine is an ...