1. Avoid Alzheimer’s A 2009 study found that people who drank three to five cups of coffee a day at midlife were 65 percent less likely to develop Alzheimer’s in their later years, compared to those who drank little or no coffee.
2. Curb Cancer Risk The antioxidant compounds in coffee may help prevent several types of cancer. In a Japanese study, women who drank three or more cups of coffee a day had half the risk of developing colon cancer, compared to those who didn’t drink coffee.
3. Defend Against Diabetes Drinking coffee lowered the risk of developing type 2 diabetes by up to 60 percent in a 2006 study that included people at high risk for the disease.
4. Reduce Workout Pain A study of young women found that using caffeine before exercise can cut post-workout pain by nearly 50 percent. The caffeine in coffee may help by blocking the activity of a chemical called adenosine that activates pain receptors in cells.
5. Guard Against Gout Two studies from 2007 suggest that drinking coffee is protective against gout, a painful, arthritic condition of the joints (most commonly, the big toes). In one study, middle-aged and older men who drank four to five cups of coffee a day were 40 percent less likely to develop gout than those who abstained from the beverage.
6. Deter Death from Heart Disease A number of recent studies indicate that coffee drinkers have lower odds of dying from heart disease. For instance, a 2008 study concluded that women who drank two to three cups of coffee per day had a 25 percent lower risk of death from heart disease than those drinking less than a cup a month.
7. Preserve Your Memory Coffee may help to keep memory sharp, according to a pair of studies from 2007. In one study, older women who drank more than three cups of coffee a day experienced fewer declines over time on memory tests than those who drank one cup or less a day. Tea drinkers enjoyed similar benefits, so caffeine may be the beneficial component.
8. Protect Against Parkinson’s Several studies have linked coffee drinking with a lower risk of Parkinson’s disease. For instance, a 2007 study revealed that people who drank one to four cups of coffee a day cut their chances of developing the neurodegenerative disorder by nearly 50 percent. Scientists believe the caffeine in coffee may help defend against Parkinson’s by boosting levels of the brain chemical dopamine.
9. Sidestep Stones Coffee appears to reduce the risk of both gallstones and kidney stones. In a 2002 study, women who drank at least four cups of coffee a day were 25 percent less likely to need surgery for gallstones than nondrinkers were, and an earlier study showed that coffee drinking lowered gallstone risk in men.
10. Say No to Stroke In a 2009 study, women who drank four or more cups of coffee a day had a 20 percent lower risk of stroke, compared to those who had less than one cup a month. (source)