Getty Images Donald Trump opened about his health and mental wellness during a recent event and continued to claim that he's "aced" what seems to be a screening test for dementia. The 79-year-old president addressed his age while speaking at the Small Business Summit in the White House on Monday (May 4). During his speech, he shared that he recently delivered two speeches in one day while on a trip in Florida. One of those was to a group of senior citizens. Trump joked that he was "not a senior," saying that he was "far younger than a senior.