The White House faces many questions about Biden's health and medical history. Here are some answers

WASHINGTON (AP) — President Joe Biden's terrible performance at the June 27 presidential debate has raised concerns about his age, health and ability to lead the federal government.

Administration officials have blamed his confused and at times indecipherable answers at the debate with Republican Donald Trump on a head cold, jet lag and poor preparation at Camp David. But at 81, Biden has found his health to be a key issue for many voters going into November's election. Dr. Kevin O'Connor, Biden's physician, issued his first comment since the debate late Monday, after White House press secretary Karine Jean-Pierre struggled to address questions about the president’s health at Monday’s news briefing.

Biden has extensive yearly physical exams, Jean-Pierre said. She added that most Americans don't understand the extent of the medical care provided to the president, as many people are lucky if they get to see their doctors once or twice a year. By contrast, the president's medical unit is “just steps down from the residence” at the White House. “A couple times a week,” Biden does a “verbal check-in with his doctor while he's exercising,” Jean-Pierre said, adding that he had a check-in on Monday.