HEALTHY LIVING
11/14/2012 11:04 am ET Updated Jan 14, 2013

A Stroke At 19 -- With A Surprising Cause

One in four people has a tiny hole inside their heart called a patent foramen ovale, or PFO. Most of us never know we have it, but the consequence of this condition can be a sudden heart attack or stroke. That's what happened to 19-year-old Phoebe Dow.

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