Retirement could be bad for your health, says wellness expert: 'Powered by purpose'

While the "official" full retirement age in the U.S. is 67, according to the Social Security Administration, the average American stops working at 62 years old.

But not everyone retires — an AARP survey last year found that a quarter of people over 50 expect to never leave their jobs.

That might not be all bad, according to some experts who believe retirement could actually be harmful to the health.

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Dan Buettner, a Florida-based author...