A heart attack, which is known as a myocardial infarction, is caused by the blood supply to the heart suddenly becoming blocked, according to the NHS.
Heart attacks are a symptom of coronary heart disease; one of the major causes of death in the UK and across the world.
Heart disease is caused by a build up of fatty deposits on the walls of arteries, which can lead to heart failure.
About 160,000 people die from heart disease in the UK every year, said cholesterol charity, Heart UK.
Drinking green tea could help to prevent a heart attack, it’s been claimed.
Green tea could lower the amount of ‘bad’ cholesterol and triglycerides in the body, according to Harvard Medical School.
Cholesterol is made by the liver from the saturated fats that you eat.
A build up of cholesterol could lead to heart disease, and therefore a heart attack.
You should drink at least five cups of green tea everyday to lower your risk of heart attack death by 26 per cent, studies revealed.
Similarly, it could also slash your risk of all-cause death by 16 per cent.
“The limited data available on green tea support a potential association between green tea and beneficial properties in relationship to risk factors for cardiovascular disease,” said Brigham and Women’s Hospital’s Director of the Department of Nutrition, Kathy McManus.
“The bottom line is that no serious red flags were seen in the amount of tea they were testing.
But, excessive green tea consumption could be harmful for the kidneys, said Harvard Medical School, so it’s best to stick to one or two cups a day.
“It appears that a few cups a day may be beneficial,” said McManus.
There are three main steps you can take to prevent a heart attack, as well as stroke, the NHS said.
Aim to eat a healthy, balanced diet, avoid smoking, and try to keep your blood pressure at a normal level.
Heart attack symptoms include feeling very weak, lightheadedness and shortness of breath.
If you think that you, or someone else, may be having a heart attack, you should call for an ambulance immediately.
While waiting for the ambulance, try chewing a 300mg tablet of aspirin - if you aren’t allergic to it - as it helps to thin the blood.