President Biden admitted that concerns over his age are "totally legitimate," as voters debate whether the 80-year-old should seek another four years in the White House.

ABC News' David Muir recently asked Biden if the growing concerns over his age, from both critics and supporters, will be a deciding factor in his decision to seek re-election.

"No," the president stated. "But it’s legitimate for people to raise issues about my age. It’s totally legitimate to do that. And the only thing I can say is watch me."

Biden, who will be 82 at the time of the next election and 86 at the end of his second term as president if re-elected, has faced concerns over whether he will be fit to serve another full term as president.

BIDEN HEALTH EVALUATION MISSING MENTAL STATUS EXAM: MEDICAL EXPERT

Biden with hand raised

President Biden is currently 80 years old. (Alex Wong)

The president recently underwent his annual physical exam where he was deemed fit to serve, but the public evaluation was missing the results of Biden's mental status.

"This physical exam is more significant for what it leaves out than what it actually tells us," Dr. Marc Siegel told Fox News Digital after noticing his cognitive tests were left out of the report.

BIDEN ‘SHOULD NOT RUN AGAIN,’ ADVISES NY TIMES COLUMNIST AHEAD OF STATE OF THE UNION: ‘TOO OLD’

Biden speaks to governors

President Biden has not said if he will seek re-election in 2024. (Manuel Balce Ceneta)

Michelle Goldberg, a New York Times columnist, recently suggested that Biden is "too old" to run for re-election in 2024 and would not have the luxury of campaigning virtually as he did in 2020.

"And while Biden was able to campaign virtually in 2020, in 2024 we will almost certainly be back to a grueling real-world campaign schedule, which he would have to power through while running the country. It’s a Herculean task for a 60-year-old and a near impossible one for an octogenarian," Goldberg wrote ahead of Biden's State of the Union address.

Jill Biden and Joe Biden wave to the press

First lady Jill Biden teased a 2024 run on Friday, saying "He’s not done" when asked by reporters. (Susan Walsh)

Biden has not officially announced he will run for president next cycle, but first lady Jill Biden made the most recent insinuation to another bid.

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"He says he’s not done," the first lady told the Associated Press while visiting Nairobi, Africa on Friday. "He’s not finished what he’s started. And that’s what’s important."

"How many times does he have to say it for you to believe it?" she added.