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This is Scientific American 60-Second Health. I'm Dina Fine Maron. Got a minute?

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Long-distance runners may at times worry about their heart health while pounding out the miles.

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But a study finds that heat stroke fells many more runners than does a bomb ticker.

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Heat stroke can damage a person's brain, heart, kidneys and muscles.

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And new data underscores the toll it takes.

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Researchers examined health records from more than 130,000 runners who competed in events in Tel Aviv during a seven-year span.

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The analysis revealed that distance runners were 10 times more likely to experience heat stroke than serious cardiac problems.

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All the fatal or life-threatening events were from heat stroke.

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The study is in the Journal of the American College of Cardiology.

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The researchers advise runners to take 10 to 14 days to adjust to the climate before tackling a serious run in a hot region.

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And they say to sit out the run if you've been sick recently.

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Perhaps one day runners will swallow internal temperature sensors that reliably record core body temperature.

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But for now runners should simply do their best to keep cool.

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Thanks for the minute, for Scientific American 60-Second Health. I'm Dina Fine Maron.

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