FILE - In this Aug. 8, 2019, file photo, Democratic presidential candidate former Vice President Joe Biden speaks at the Des Moines Register Soapbox during a visit to the Iowa State Fair in Des Moines, Iowa. Three Democrats in their 70s are vying to challenge the oldest first-term president in U.S. history. But science says age isn’t a proxy for fitness. The bigger question is how healthy you are and how well you function. With only a few years separating them, President Donald Trump at 73 has mocked Biden, 76. Biden and Sen. Bernie Sanders, 77, try to showcase physical activity on the campaign trial while 70-year-old Elizabeth Warren even jogs around at rallies. (AP Photo/Charlie Neibergall, File)

Too old for president? Health and fitness a better question

August 31, 2019 - 9:50 am

WASHINGTON (AP) — Science says age is a number, not a proxy for physical and mental fitness. But with three Democrats in their 70s vying to challenge the oldest first-term American president, age's importance will be tested as never before.

Only a few years separate President Donald Trump, 73, from Vermont Sen. Bernie Sanders, 77, and former Vice President Joe Biden, 76. But as Trump mocks Biden for verbal missteps that he blames on age, both Sanders and Biden have conspicuously showcased their physical activity on the campaign trail.

A third top Democratic contender, 70-year-old Sen. Elizabeth Warren of Massachusetts, takes high-energy jogs around rallies.

It's an effort to show the public what specialists know: The age on your driver's license means less than how healthy you are and how well you function.

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