http://www.eatingwell.com/nutrition_health/nutrition_news_information/health_perks_of_coffee
By EatingWell Editors, "Health Perks,"November/December 2009
That morning cup of coffee does more than just help you to get going, suggests a rush of recent research. Here’s how much you may need to drink daily to lower your risk of these three increasingly common diseases. Warning: some people may feel jittery after just one cup.
*The lowest risk was found in people who drank 3 to 5 cups daily. Drinking more than 5 cups didn’t offer as much protection.