Interesting factoid: Almost a quarter of the nation's presidents suffered strokes, according to Loyola University Hospital neurologist Dr. Jose Biller.
It makes a lot of sense considering that strokes are more common in men and, according to the American Heart Association, your chances of having a stroke doubles for every decade of life beyond age 55. A poor diet and physical inactivity can also play roles.
Check out my article examining the negative health effects of running for president, too:
http://www.forbes.com/health/2008/02/25/health-hazardous-campaign-forbeslife-cx_avd_0225prezhealth.html