As President Barack Obama meditate on his fourth dimension in office , he has a way of acknowledging his waning time in the position : A joke about his gray pilus .
" Right now , we are waging war under authority allow for by Congress over 15 years ago — 15 year ago , " he say during a speech reflecting on his administration ’s counterterrorism strategy .
" I had no gray-headed hair 15 age ago . "
Indeed , despite his close - cutting hairstyle , it ’s impossible not to notice the trademark presidential graying , as the president ’s short pitch-dark hair has become more of a saltiness - and - white pepper colour .
And thoughsome skin doctor maintainthat Obama is the latest victim of the expedited presidential aging process , appearing to age quicker due to the stress of the part , others say that it’smore attributable to lifelike agingthan stress .
Other study , include a comprehensive analysis of elections date back to the 1700s , have foundthat heading a nation can take years off a leader ’s life . That analysis , from the Harvard Medical School , detect that elect chief of government , on average , have lives almost three year shorter than the candidates they vote down .
Here ’s how the commonwealth ’s past presidents have looked near the outset and end of their respective terms .
Obama use up the swearing of berth on Inauguration Day , January 20 , 2009 .
