When a city hosts a marathon, it sees an increase in heart attacks among residents

New research has found that being in a city where a major marathon is being hosted can increase the risk of heart attack and cardiac arrest, reports Reuters.

The study authors believe the increases are a result of blocked streets and traffic congestion that often come with marathons.

"The data are believable and the results important," said Selim Suner, MD, of Brown University's Alpert Medical School in Providence, Rhode Island, who was not involved in the research. "This will probably open the eyes of some of the planners for the events.”

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