Coffee May Help Prevent Diabetes

But Tea, Decaf Don't Seem to Do the Trick

By Charlene Laino
WebMD Medical News Reviewed By Michael Smith, MD

A jolt of java may do more than get you going in the morning. Drinking four or more cups of coffee a day appears to help prevent diabetes, Harvard researchers report.

It's not the first time that a study has suggested that the popular brew may protect against the blood sugar disorder that affects at least 17 million Americans. Last year, Dutch doctors reported that heavy coffee drinkers are half as likely to develop diabetes as people who consume two cups or less a day.

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