Of the 34 who died of natural causes (all except Kennedy, McKinley, Lincoln and Garfield)， 23 lived longer than the average man would have, based on their ages at inauguration. They would have lived longer than the average for other men of their era even if they'd somehow aged at twice the normal rate while serving as president.

Commenting on the report, Dr James Goodwin, director of the Sealy Center on Aging at the University of Texas Medical Branch, said the idea that presidents will be adversely affected by stress is "fundamentally flawed." Research in animals and some in people suggests that the most dangerous type of stress comes with helplessness, such as "when you're a middle manager and can't change the system," he explained.

"When you're more in charge, it isn't a bad stress," he said.

Goodwin added that presidents aren't like other people. "You're selecting for people with tremendous life force, incredibly energetic, emotionally active and positive people," he said. "They're politicians."

One idea for future research would be to study the losers of presidential elections, who would share many traits with the winners but never actually ended up in the White House, he said.

The research is published in the Dec 7 issue of the Journal of the American Medical Association.

【从豪宅到专机：美国总统们衰老快但寿命长】相关文章：

★ 园艺工作对健康的4个惊人好处

★ 正念进食或能抑制对食物的渴望,帮助减肥

★ 德国笑话不可笑 被选为最不幽默国家

★ 用外语工作有什么好处？BBC这篇文章作者现身说法了……

★ 美国前总统奥巴马将联手NBA??!

★ 拜登宣布参选美国总统 民主党内已有19个竞争对手

★ 奇迹就在你周围

★ 今天会是美好的一天

★ 新研究表明:大胡子男性携带的细菌比狗还多

★ 欧洲毒黄瓜引恐慌 污染来源还在调查中