In a recent conversation with The Wall Street Journal, President Donald Trump addressed concerns about his health and energy levels, clarifying details surrounding a medical examination he underwent in October. Contrary to earlier reports, the procedure was a CT scan rather than an MRI, a distinction he and the White House took some time to clarify.

During the interview, Trump expressed his regret over having the scan at Walter Reed National Military Medical Center, as it sparked public speculation about his well-being. According to a memo from his physician, released by the White House in December, the “advanced imaging” served as a precautionary measure appropriate for his age group.

Initially, Trump mentioned it was an MRI but was uncertain about the specific area of his body that was scanned. While CT scans are quicker and less detailed compared to MRIs, they still play a crucial role in diagnostic imaging.

Navy Captain Sean Barbabella, the president’s physician, explained in a statement issued by the White House that the October examination coincided with Trump’s planned visit to Walter Reed, where he aimed to engage with the facility’s personnel. The president had his annual physical back in April.

“President Trump had planned a visit to Walter Reed Medical Center in October to meet with the dedicated staff and soldiers. To make efficient use of his time there, we advised him to undergo a routine physical evaluation to monitor his continued good health,” Barbabella conveyed.

Barbabella said that he asked the president to undergo either a CT scan or MRI “to definitively rule out any cardiovascular issues” and the results were “perfectly normal and revealed absolutely no abnormalities.”

White House press secretary Karoline Leavitt said in a statement Thursday that the president’s doctors and the White House have “always maintained the President received advanced imaging” but said that “additional details on the imaging have been disclosed by the President himself” because he “has nothing to hide.”

“In retrospect, it’s too bad I took it because it gave them a little ammunition,” Trump said in the interview with The Wall Street Journal published Thursday. “I would have been a lot better off if they didn’t, because the fact that I took it said, ‘Oh gee, is something wrong?’ Well, nothing’s wrong.”

The 79-year-old became the oldest person to take the oath of office when he was sworn in as president last year and has been sensitive to questions about his health, particularly as he has repeatedly questioned his predecessor Joe Biden’s fitness for office.

Biden, who turned 82 in the last year of his presidency, was dogged the end of the his tenure and during his abandoned attempt to seek reelection over scrutiny of his age and mental acuity.

But questions have also swirled around Trump’s health this year as he’s been seen with bruising on the back of his right hand that has been conspicuous despite a slathering of makeup on top, along with noticeable swelling at his ankles.

The White House this summer said the president had been diagnosed with chronic venous insufficiency, a common condition among older adults. The condition happens when veins in the legs can’t properly carry blood back to the heart and it pools in the lower legs.

In the interview, Trump said he briefly tried wearing compression socks to address the swelling but stopped because he didn’t like them.

The bruising on Trump’s hand, according to Leavitt, is from “frequent handshaking and the use of aspirin,” which Trump takes regularly to reduce the risk of heart attack and stroke.

He said he takes more aspirin than his doctors recommend but said he has resisted taking less because he’s been taking it for 25 years and said he is “a little superstitious.” Trump takes 325 milligrams of aspirin daily, according to Barbabella.

“They say aspirin is good for thinning out the blood, and I don’t want thick blood pouring through my heart,” Trump said. “I want nice, thin blood pouring through my heart. Does that make sense?”

Trump, in the interview, denied he has fallen asleep during White House meetings when cameras have caught him with his eyes closed, instead insisting he was resting his eyes or blinking.

“I’ll just close. It’s very relaxing to me,” he said. “Sometimes they’ll take a picture of me blinking, blinking, and they’ll catch me with the blink.”

He said that he’s never slept much at night, a habit he also described during his first term, and said he starts his day early in the White House residence before moving to the Oval Office around 10 a.m. and working until 7 p.m. or 8 p.m.

The president dismissed questions about his hearing, saying he only struggled to hear “when there’s a lot of people talking,” and said he has plenty of energy, which he credited to his genes.

“Genetics are very important,” he said. “And I have very good genetics.”