Trump asked to be administered a mental test and was given the Montreal Cognitive Assessment as part of a medical exam by Dr. Ronny Jackson, the White House physician, who on Tuesday said he had absolutely no concerns about Trump's neurological function.
Trump has stated openly that exercise is overrated, even going so far as to say that it can create more problems than it cures.
The president also suggested that the White House kitchen staff could be key to improving his diet.
This was the test Nasreddine developed as a young researcher two decades ago, in an effort to quickly assess, within 10 or 12 minutes, whether someone has suffered light cognitive impairment or the onset of Alzheimer's disease, by asking them to perform tasks such as drawing a clock, identifying animals and remembering words.
Dr Jackson said Trump scored 30 out of 30 on the test, adding: "The president is mentally very sharp, very intact".
Those who accused Barack Obama of faking his birth certificate to prove his U.S. citizenship, which included the new president, were known as birthers - and one clever clogs has come up with a new name for the Trump medical theorists.
The White House physician who has served since 2013 said that Donald Trump's "overall health is excellent".
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According to the report carried out by Dr Ronny Jackson, the 71-year-old is 6ft 3ins (1.9m) tall and weighs 239 pounds (108kg).
At his weight and height, the president is borderline obese. In fact, Jackson went out of his way to specifically draw attention to President's healthy heart.
Public-health experts have known for years that BMI isn't a ideal tool for measuring physical fitness and that an improved metric would incorporate waist circumference.
Trump has a well-known penchant for fast food, including meals featuring McDonald's Big Macs and Filet-o-Fish sandwiches, and an aversion to exercise other than playing golf while using a cart to get around the links.
The assessment was one in a series of rosy readings that Jackson offered about Trump's health after examining him for more than four hours last week.
The doctor also mentioned that in addition to taking Advil and Crestor, a drug used to control cholesterol levels, Trump also takes Propecia, a drug used to stem hair loss.
Trump's medical results caused a storm with the Twitterati making jokes about the President's unhealthy eating habits.
Trump "was watching and liked it", an official said after the briefing. Such questions have escalated in the wake of an unflattering new book that paints Trump as a man-child who has trouble processing information and recognising old friends.