Last updated: Apr 23, 2008
While most heart attack victims are middle-aged or olderthe average age for a first attack is 66 for men and 70 for womenpeople in their 20s and 30s suffer attacks too.
Heart attacks occur roughly every 35 seconds in the United States, and most occur in the morning, a time when the platelets in the blood are especially "sticky" and prone to form clots.
Early Warning Signs
Heart attack symptoms can be subtle Watch video
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Survival odds for people who have had a heart attack keep getting better thanks to advances in diagnosis, medication, and lifesaving technology.