Trump's doctor says he's in "excellent" health

• Questions about Trump and President Biden's, 81, ages and mental fitness have emerged as a concern among voters ahead of 2024, and polling shows that most voters would prefer alternatives if next year's election features a rematch of the two candidates.

Driving the news: Bruce Aronwald wrote in the letter dated Nov. 20 that he has been Trump's personal physician since 2021.

• He said that he has conducted "several comprehensive examinations," including the most recent one on Sept. 13.
• "[Trump's] physical exams were well within the normal range and his cognitive exams were exceptional," Aronwald wrote.

The big picture: Trump, who has repeatedly hit Biden over his age, published his letter from his physician on the day of Biden's 81st birthday.

• The Biden campaign and Republican candidates have criticized Trump over recent blunders on the trail, including when he told a crowd in Sioux City, Iowa, that he was happy to be in "Sioux Falls," which is in South Dakota.

• Aronwald wrote in the letter that Trump "is currently in excellent health, and with his continued interest in preventative health monitoring and maintenance, he will continue to enjoy a healthy lifestyle for years to come."

Go deeper: Trump has his own age problem as he mocks 80-year-old Biden's fitness