Just one cup a day causes caffeine addiction, researchers say

It’s official -- you really do need that coffee in the morning and if you don’t get it, you really are in withdrawal, researchers said on Wednesday.

As little as one cup of coffee a day can produce caffeine addiction, researchers at Johns Hopkins University in Baltimore said.

“Caffeine is the world’s most commonly used stimulant, and it’s cheap and readily available so people can maintain their use of caffeine quite easily,” said Roland Griffiths, a professor of psychiatry and neuroscience who led a review of 170 years’ worth of studies on caffeine.

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