Swapping bad fats like butter for healthier fats like olive oil lowers the ratio of bad cholesterol to good cholesterol, which is good for your heart.

Getting rid of artificial trans fats (like in fried foods) and replacing them with healthy oils or whole grains lowers bad cholesterol ratios more than just cutting butter or cheese.

Saturated fat raises LDL cholesterol, but mostly the 'bigger, fluffier' kind that doesn't clog arteries as much as the small, sticky kind.

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.

Eating foods high in saturated fat doesn't seem to make you more likely to have a heart attack or die sooner, according to a review of many studies.

People who eat more olive oil, nuts, and fish instead of butter and fatty meats have lower chances of having unhealthy cholesterol levels.