Eating foods rich in monounsaturated fats, like olive oil or avocados, doesn't seem to make heart disease risk higher or lower based on this analysis.

Eating more saturated fat—like in butter or red meat—doesn’t seem to make people more likely to get heart disease, based on this big review of studies.

The amount of saturated fat found in your blood doesn’t seem to predict whether you’ll get heart disease, based on blood tests from many people.

Even though eating trans fats seems bad for your heart, the amount of trans fat found in your blood doesn’t clearly link to heart disease risk in these studies.

Eating more omega-6 fats—like those in vegetable oils—doesn’t appear to increase or decrease your risk of heart disease, based on this large review.

If you swap out a little bit of butter or fatty meat for foods like nuts or vegetable oils, you're less likely to have a heart attack or die from heart disease.