First lady Jill Biden dismisses questions about the president's mental fitness as 'ridiculous'

• First lady Jill Biden said questions about President Joe Biden's mental fitness are "ridiculous."
• The comments came in an upcoming interview with "CBS Sunday Morning."

Concerns about President Joe Biden's mental fitness are "ridiculous," First Lady Jill Biden said in an interview with "CBS Sunday Morning."

The first lady defended Biden when asked about recent polls that show some Americans have questions about the president's mental fitness.

"I think that's ridiculous," Jill Biden told host Rita Braver, according to an excerpt of the interview published by CBS News on Thursday.

The comments come after a Politico/Morning Consult poll released last month found that 46% of Americans agree that Biden is mentally fit, whereas 48% disagree. In the same poll, roughly half of Americans disagreed that Biden is "in good health."

Republicans have persistently attempted to cast Biden as mentally unfit to serve as president since he won the 2020 Democratic presidential nomination. Biden has often laughed off the attacks and tried to shut them down.

Biden, the oldest person to become president, turned 79 on November 20. The day before his birthday, he underwent a routine physical examination, with his doctor saying that he's in good health and fit for office.

Jill Biden also spoke candidly about her own experience of becoming first lady, telling CBS that the job is "24 hours a day."

"I think it's a little harder than I imagined," Biden told Braver. "It's not like a job that you do; it's a lifestyle that you live, and it's not something you leave at 5:00 or at 3:00 … it's 24 hours a day."