16 Before & After Photos That Capture the Toll of Being POTUS (PHOTOS)

It's been said that being the President of the United States is the hardest, most grueling job in the world. One thing is for certain: It sure puts years on a person. The premature grey hair, the tired eyes — being the Leader of the Free World really takes a toll on a person's looks.


From Lincoln to Obama, here's proof that being POTUS is no easy task.  Which U.S. president do you think aged the most in office?

Images: Left via Dennis Brack/Pool/CNP/Corbis; Right via Ron Sachs/ZUMA Press/Corbis

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