Heart attacks are a medical emergency and require immediate treatment, said the NHS.
The condition, which is also known as a myocardial infarction, is caused by the heart’s blood supply suddenly becoming blocked.
Making some small changes to your diet could help to lower your risk of a heart attack.
Eating more oats could help to lower your cholesterol, and subsequently reduce your chances of a heart attack, a charity has revealed.
Oats are rich in a soluble fibre that helps to get rid of cholesterol, said Heart UK.
The fibre - known as beta-glucans - forms a gel in the gut that stops cholesterol building up.
Just 3g of beta-glucans lowers the amount of cholesterol in your body, the charity said.
That’s the equivalent to just 30g of porridge oats, or three oatcakes.
“Some foods punch well above their weight in helping to reduce cholesterol levels – we call them the ‘cholesterol busters’,” said Heart UK.
“Choosing a healthy diet, low in saturated fat, is important in helping to keep your cholesterol low.
“Once eaten beta-glucan forms a gel which helps bind cholesterol in the intestines and prevent it from being absorbed.
“Foods which contain 1g or more of beta-glucan can carry a cholesterol-lowering claim.”
Soya foods could also help to lower the amount of cholesterol in your body.
Naturally low in saturated fat, soya foods contain special proteins that influence how the body regulates cholesterol, it said.
The best way to lower your heart attack risk is to make some lifestyle changes, said the NHS.
An unhealthy diet could lead to a hardening of the arteries, which increases the chances of a myocardial infarction.
Fatty plaques could build up in the arteries if you follow a high-fat diet plan, which can lead to blood clots.
Having high blood pressure also increases your risk of a heart attack.
All adults over 40 years old should check their blood pressure at least every five years.