Understanding the human body is a team effort. That's where the Yachtel group comes in.

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This is Scientific American's 60-second science. I'm Erica Barris. Got a minute?

Maybe call it the Sex and the City footwear effect.

High heels are stylish and in some circles considered a fashion requirement.

But they come with risks.

Emergency room visits due to high heel shoe related injuries doubled

between 2002 and 2012. That's according to a study in the journal of foot and ankle surgery.

Researchers estimate that during the period of the study, Americans sustained more than

a hundred and twenty three thousand high-related ER-worthy injuries.

Almost three-quarters of the damage was to ankles and feet, but wearers also hurt their knees, shoulders, and heads.

Most of the injuries were minor.

The research adds to a body of knowledge on the adverse effects of heels.

It's known that walking in them can reduce

ankle muscle movement, stride length, and balance. Long term, heels can alter the neuro-mechanics

of walking and can lead to musculoskeletal disorders. But they look good. And more than half of

American women, and some men, wear heels regularly. Most of the footwear foibles

tracked in the study were suffered by women between the ages of 20 and 29. And perhaps surprisingly,

the majority of the injuries did not happen while people were out on the town. They occurred at

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