The Benefits of Caffeine
Caffeine can improve memory, decrease fatigue, improve your mental functioning, study after study suggests.

It can improve your short-term memory and speed up your reaction times, according to a study presented in 2005 at the Radiological Society of North America.

Moderate coffee consumption -- defined as three or four cups a day, providing 300 or 400 milligrams of caffeine -- carries "little evidence of health risks and some evidence of health benefits," conclude researchers from the Linus Pauling Institute at Oregon State University in Corvalis, writing in Critical Reviews in Food Science and Nutrition in March 2006.

Coffee drinking, the researchers say, may help prevent type 2 diabetes, Parkinson's disease, and liver disease, including liver cancer. And it doesn't appear to significantly increase heart disease risk or cancer. But, they warn, those with high blood pressure, as well as children, teens, and the elderly, may be more vulnerable to caffeine's adverse effects.
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