Among middle-aged American Indians, people who ate more fat — especially saturated fat — were more likely to die from heart disease than those who ate less, even when other health factors were taken into account.

In different countries, people who eat more saturated fats, trans fats, and cholesterol tend to have higher rates of heart disease deaths over 25 years — and this pattern shows up when you compare countries.

In different countries, people who eat more saturated fats, trans fats, and cholesterol tend to have more heart disease deaths — this pattern was noticed when scientists compared diets and heart disease rates around the world.

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 appear to raise the chance of dying from heart disease, based on long-term studies of nearly 90,000 people.

Eating more fat in your diet doesn't seem to make you more likely to die from heart disease, according to long-term studies of nearly 90,000 people.