Trump's physician of 25 years, Dr. Harold Bornstein, said Trump "has had no significant medical problems" and called the candidate's blood pressure and lab results "astonishingly excellent" in a signed statement Trump released publicly on Monday.
"If elected, Mr. Trump, I can state unequivocally, will be the healthiest individual ever elected to the presidency," Bornstein, an internal medicine and gastroenterology specialist who works at Lenox Hill Hospital in New York, wrote in the letter dated December 4.
Bornstein is not believed to have evaluated any past presidents.
Trump's blood pressure is 110/65, according to Bornstein, a better than average reading. Normal blood pressure for a healthy adult is 120/80.
Trump has also never suffered from any cancer and, according to his doctor, has had only one surgery in his life: an appendectomy when he was 10.
The doctor also declared Trump's cardiovascular health to be "excellent."
While Trump boasts of never drinking alcohol or smoking tobacco, the candidate's health has come under scrutiny given the candidate's self-avowed lack of an exercise routine and his indulging diet, which he has said often includes fatty and cholesterol-heavy foods.
"I eat what I like," Trump said in a November interview with Bloomberg Politics.
The doctor's note is reminiscent of Trump's own boastful nature on the campaign trail.
It notes that Trump's "physical strength and stamina are extraordinary," a point Trump himself has brought up as he has knocked Democratic front-runner Hillary Clinton
for lacking "the strength or stamina" to be president.
Trump himself once again touted his "stamina" in a statement accompanying the positive bill of health.
"People have been impressed by my stamina, but to me it has been easy because I am truly doing something that I love. Our country will soon be better and stronger than ever before," Trump said in the statement.
Trump also touted his "great genes," noting that his parents "had very long and productive lives."
Trump would become the oldest U.S. president in history if elected, claiming the mantle from President Ronald Reagan, who was inaugurated at age 69.