The 48-year-old commander in chief heads to the National Naval Medical Center in Bethesda, Md., on Sunday morning for his first physical exam as president.
During the 2008 White House race, his campaign released a statement from his longtime Chicago doctor saying Obama was in excellent health at the time of his last exam — in January 2007.
That statement also said Obama had a family history of cancer — and a smoking habit he was trying to break.
The president said at a news conference last June that he still had an occasional cigarette. It was his first public acknowledgment that he hadn't kicked the habit.