What's really in your coffee?

If you drink decaff coffee because you like the taste but not the jittery after-effects, scientists say you could be kidding yourself.

New research published this week has found that caffeine is not responsible for giving coffee its buzz, but rather a 'mystery' chemical.

Volunteers who drank decaffeinated coffee displayed exactly the same symptoms - increased blood pressure and nervous system activity - as those who drank 'real' coffee.

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