As the NHS explains, this is because fatty foods contain an unhealthy type of cholesterol called LDL cholesterol.
“Avoid foods containing high levels of saturated fat, as they increase levels of LDL cholesterol in your blood,” advises the NHS.
Foods high in saturated fat include pies, fried foods, sausages and fatty cuts of meat.
Instead, you should opt for a Mediterranean-style diet. This means eating more bread, fruit, vegetables and fish, and less meat.