Nearly 360,000 out-of-hospital heart attacks occur each year, but new research shows that many of these can be prevented by paying attention to symptoms that may show even a month before the attack, Reuters reports. The study, whose findings were presented at the annual scientific sessions of the American Heart Association, looked at the health records of 567 men who suffered “sudden” heart attacks. Scientists found that over 50% of men showed symptoms before the attack and that amongst those who showed symptoms, 56% had chest pain. Additionally, about 80% of symptoms occurred between 1 hour and 1 month before the attack. Healthcare providers are urging patients to seek medical attention if they experience chest pain, shortness of breath, dizziness, or palpitations.