In total, 40 American presidents have died ever since December 14, 1799: the date the country's first president, George Washington, passed away. The causes of death are not clear for all of them, but some presidents have indeed endured painful deaths. The oldest president to die was Jimmy Carter, at 100, and the youngest was John F. Kennedy, at 46.
From assassinations to heart attacks, and everything in between, in this gallery, you'll get to know how each American president died. Simply click on it.