<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
What causes someone to have a heart attack?
<|assistant|>
A heart attack can be caused by a sudden increase in stress, smoking, poor diet, high blood pressure, diabetes, and other risk factors. The most common symptom of a heart attack is chest pain or pressure, but some people may experience symptoms like shortness of breath, feeling light-headed, nausea, or back pain. It is important to contact emergency medical services right away if you believe you or someone you know is having a heart attack.