Donald Trump on Thursday released a letter from his doctor that deemed him to be "in excellent physical health," a day after he shared the results of a recent physical exam during a taping of "The Dr. Oz Show."

The letter was written by Dr. Harold Bornstein, of New York's Lenox Hospital. Bornstein has been Trump's physician for more than three decades.

Bornstein said Trump has been hospitalized only once in life, when he underwent an appendectomy when he was 11 years old. He is 6-foot-3 and 236 pounds. He has a BMI of 29.5, putting him in the overweight range.

"He takes a lipid lowering agent and a low dose aspirin," Bornstein wrote in the one-page letter. "He does not use tobacco products or alcohol.

"In summary, Mr. Trump is in excellent physical health."

Trump surprised a studio audience Wednesday when he shared the letter, which discloses the results of a recent physical exam, on "The Dr. Oz Show" just hours after a senior aide told news outlets that the GOP nominee would not address his health.

Trump provided host Mehmet Oz with the letter and ran through a quick discussion of the results.

>> Related: Trump discusses his health while taping 'The Dr. Oz Show'

"I feel as good today as I did when I was 30," Trump said in a clip promoting the interview that is scheduled to air Thursday.

Rival Hillary Clinton has criticized Trump for failing to share much about his medical records while calling for her own. She has said he's failed to "even meet the most minimalistic standards" of disclosure.

Trump released a separate letter from Bornstein in December, in which the physician said that his patient, if elected, would "unequivocally" be "the healthiest individual ever elected to the presidency."

>> Related: Donald Trump's doctor wrote health report in only 5 minutes

Clinton released a letter from her physician, Dr. Lisa Bardack, on Wednesday that said, in part, that Clinton is "healthy and fit to serve as president of the United States."

Clinton's well-being has been particularly scrutinized after she stumbled into a van on Sept. 11 when she abruptly left a memorial event in New York. She took three days off the campaign trail to recover from what Bardack later said was pneumonia.

The Democratic presidential hopeful was criticized for failing to disclose her diagnosis sooner.