Fat is an important part of a healthy diet. Choose foods with “good” unsaturated fats, limit foods high in saturated fat, and avoid “bad” trans fat. “Good” unsaturated fats — Monounsaturated and polyunsaturated fats — lower disease risk.

What is bad about unsaturated fat?

Elevated LDL cholesterol in the blood may increase a person's risk of heart disease. The study authors also reported that replacing saturated fat with unsaturated fat may also bring down the risk of cardiovascular disease (CVD). However, recent research has challenged the link between saturated fats and heart disease.

Are unsaturated fats still bad for you?

Unsaturated fats. If you want to reduce your risk of heart disease, it's best to reduce your overall fat intake and swap saturated fats for unsaturated fats. There's good evidence that replacing saturated fats with some unsaturated fats can help to lower your cholesterol level.