Heart attack symptoms include chest pain, a feeling of lightheadedness and sweating among others.
The dangerous event can come on rapidly, or gradually develop.
It happens when a blockage in an artery causes an interruption on blood flow to the heart.
You are more at risk of having a heart attack if you are overweight, have high blood pressure, high cholesterol or don’t exercise regularly, among other factors.
Eating avocado’s may help prevent the condition, according to the US-based Mayo Clinic.
The millennial-fruit is a good source of poly-unsaturated fats, which is a good replacement for foods containing saturated and trans fats. These can raise your cholesterol level, increasing the risk of a heart attack.
“When you do use fats, choose monounsaturated fats, such as olive oil or canola oil,” says the Mayo Clinic on its website.
“Polyunsaturated fats, found in certain fish, avocados, nuts and seeds, also are good choices for a heart-healthy diet.
“When used in place of saturated fat, these may help lower your total blood cholesterol.
“But moderation is essential. All types of fat are high in calories.”
Avocados cost around £1.60 and can be purchased from most UK supermarkets.
To prevent a heart attack the NHS recommends changing your diet, quitting smoking, and taking steps to lower your blood pressure.
“Making lifestyle changes is the most effective way to prevent having a heart attack (or having another heart attack),” says the national healthcare provider.
It recommends avoiding foods high in fat, to prevent a heart attack, as these contain fatty plaques which may build up in your arteries.
Foods high in saturated fat include meat pies, sausages and fatty cuts of meat, butter, ghee, lard, cream, hard cheese, cakes and biscuits and any food containing coconut or palm oil.
“Eating a small amount of unsaturated fat will increase the level of good cholesterol and help reduce any blockage in your arteries,” adds the NHS.
It says that avocados are a good way to do this.
Tomatoes could lower your risk of heart attacks as they’re a great source of antioxidants, said medical website Health.com.
They’re rich in the antioxidant lycopene, which helps to get rid of ‘bad’ cholesterol.
Tomatoes may also help to keep blood vessels open, and are low in sugar.
“Lycopene prevents LDL cholesterol from oxidising, which is the process that initiates heart disease.”