A heart attack happens when the blood supply to part of the heart is suddenly blocked. Common warning signs include chest pain or pressure, pain spreading to the arms, neck, jaw or back, shortness of breath, feeling sick or sweaty, and light-headedness. Symptoms can be less obvious in women, often including breathlessness, nausea and fatigue without severe chest pain.
If you suspect a heart attack, call 999 immediately — don't wait to see if symptoms pass, and don't drive yourself to hospital. Chewing an aspirin while waiting for the ambulance can help if you're not allergic to it.
The main modifiable risk factors for heart disease are smoking, high blood pressure, high cholesterol, being inactive, being overweight, and excess alcohol — see our pages on smoking, exercise and healthy diets for more.
Common questions
What are the warning signs of a heart attack?
Chest pain or pressure, pain spreading to the arms, neck, jaw or back, shortness of breath, feeling sick or sweaty, and light-headedness.
What should I do if I suspect a heart attack?
Call 999 immediately. Do not wait to see if symptoms pass, and do not drive yourself to hospital.