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Look at how these U.S. presidents aged from the beginning to the end of their terms.

For a glimpse at what President-elect Barack Obama might look like at the end of his term in 2013, the Tribune turned to Aprilage Development Inc., a Toronto-based software imaging company that operates age-me.com, which allows people — for a $20 fee — to get a glimpse of how the aging process may affect them.

As for Obama, the technology shows him, then age 51, with more gray in his salt-and-pepper hair, a sallow complexion, weary, reddened eyes and slight wrinkles.

And that’s if he doesn’t smoke in the White House.