Trump's Doctor: I Wrote That Letter In 5 Minutes

In December, Donald Trump's personal physician wrote a letter insisting that the candidate would be "the healthiest individual ever elected to the presidency" if he won in November. But on Friday, Trump's doctor admitted he wrote that letter in five minutes while waiting for the Donald's limo to arrive, the latest twist in an already strange subplot of the Trump campaign.

In an interview with NBC, the doctor in question, Harold Bornstein, stood by his assessment of Trump's health. Bornstein had written in December that Trump's test results were "astonishingly excellent," and he reiterated that sentiment on Friday, claiming that Trump's "health is excellent, especially his mental health!"

"He thinks he's the best," Bornstein added with a laugh. "He would be fit because I think that his brain is turned on 24 hours a day."

However, the doctor also said that he wrote the four-paragraph diagnoses — still the only medical information Trump has released about himself during this campaign — in a grand total of five minutes, as one of Trump's driver's waited outside his office. Bornstein acknowledged that this may have accounted for some of the letter's unconventional phrasing.

"I thought about [the letter] all day, and in the end — I get rushed, and I get anxious when I get rushed," Bornstein said. "In the rush, I think some of those words didn't come out exactly the way they were meant." The letter did indeed contain a typo, reading "To Whom My Concern" at the top.

Bornstein, a certified physician in gastroenterology and internal medicine, has been Trump's personal doctor for three decades, according to the campaign. Bornstein says he examines the 70-year-old businessman in May of every year. Although the letter about Trump's health was printed on stationary from the College of American Gastroenterology, that organization told CNN's Sanjay Gupta that Bornstein hasn't been a member for over 20 years.

Trump's health has become a renewed topic of discussion lately, largely because of Trump and his surrogates have been casting aspersions on Hillary Clinton's health. Earlier in August, Trump said that Clinton, who is two years younger than him, doesn't have "the mental or physical stamina" to fight ISIS. Trump supporter Rudy has Giuliani echoed those sentiment, encouraging voters to Google "Hillary Clinton illness," while GOP strategist Karl Rove appeared on Fox News with several white boards in an attempt to prove that Clinton was not physically fit to be president. There remains no evidence that Clinton suffers from any significant health issues.