It's one of many people's worst fears: What do I do if I'm alone with someone who's having a heart attack? In this video, Dr. Oz gives explicit instructions on how to keep your loved one alive until help arrives.
Heart attack, also called a myocardial infarction, is the leading cause of death among Americans. Our experts reveal what the causes and symptoms of a heart attack. Also learn how healthy nutrition and exercise help prevent a heart attack.
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