While I m not a cardiologist, a limit on the number of times a person can get heart attacks in their lives seems like a joke to me. What a heart attack is is a hardening of fatty deposits in your arteries, leading to your heart being starved of oxygen and nutrients. This leads to the death of some heart muscles. From that description, a limit doesn t make much sense. Your question worries me though, if you think you ve had a heart attack (or a friend has had one), get to the hospital and get it checked out! If you ve had one heart attack, EVEN A MILD ONE, you could be at a much greater risk for getting another one. If you ve had one or think you might be at risk for one, go talk to a doctor. Your primary care physician would be a good starting point (they ll be able to tell whether you need more tests), but if that s not an option just go ask a pharmacist, they typically have great medical advice. If possible it is much better to see a doctor though. In order to help prevent future heart attacks as much as possible, it s important to exercise daily (U.S. Gov t recommendations have recently been upped from 30 mins, 3 times a week, to 45 minutes to an hour a day) to strengthen your circulatory system, eat a healthy (lower fat, and focusing more on the good fats, as well as replacing sugars / processed carbs like white bread with whole grain breads, rice, and vegetables and fruits), and (after discussion with a doctor!) beginning an aspirin regimen like taking low-dose bayer aspirin (listed in sources) once a day. It s important to discuss that last one with your doctor, as it may not be necessary and it does impact the way your body works. I hope some of what I said will be helpful, even though I rambled most of it.