The President said he would like to lose some, according to Jackson.
President Trump spends a chunk of each day on the phone, whether it's a White House landline or "Trump One" or 'Trump Two, ' the nicknames his aides have given to his two cell phones.
But anyone without dementia should pass the test with flying colors.
To the able-minded, the test may seem overly simple but they are some of the basic mental processes people with the disorder sadly lose. Trump does not look like a well man at all, but Dr. Ronny says he's in absolutely ideal shape.
The Montreal Cognitive Assessment, which identifies light impairment or the onset of Alzheimer's disease, was designed by neurologist Ziad Nasreddine in the 1990s.
Who is Dr Ronny Jackson?
According to Jackson's Navy biography, he graduated from medical school at the University of Texas in 1995.
He said he had impressed medical staff with his recent performance on a treadmill, regular workouts or not.
Rear Adm. Ronny Jackson, M.D., the official physician to the president, revealed the results of Donald Trump's physical this week, crediting him with "incredible genes", because of "the way God made him".
Overall, Jackson described a president in excellent health for a 71-year-old man, except for his elevated cholesterol level and his weight, 239 pounds, which qualifies him as borderline obese for a man of his height, 6-foot-3.
He is known to enjoy high-fat foods like fried chicken, hamburgers and steak - and while he plays golf, he does not have a daily exercise routine.
As for medicines, Trump now has prescriptions for Crestor, for lowering cholesterol; Aspirin; Propecia, for hair loss; Soolantra Cream for rosacea; and a multivitamin.
The anti-hair loss tablets have been linked to depression, a reduced sex drive and erectile problems.
And former director of the United States Office of Government Ethics, Walter Shaub Jr, asked whether people should be making jibes about the President Trump's physical attributes.
As for his mental acuity, Trump was quick to note his doctor's pronouncement that he aced a cognitive exam, which he referenced with a dig at predecessors Obama, Bush and Bill Clinton for not doing more to curb threats from North Korea. The president is "very sharp" and "very articulate" in their conversations and does not repeat himself, he said.