People in Korea who ate way more carbs than fat were more likely to die from heart problems than those who ate more fat and fewer carbs.

People who ate a lot more carbs than fat were a bit more likely to die from any cause, not just heart problems.

Eating a lot of carbs instead of protein didn’t seem to raise the risk of dying from heart problems in this group, even though it did raise the risk of dying from any cause.

Eating more carbs might raise your chance of having a heart problem, but it doesn’t seem to make you more likely to die from anything else or from cancer — so carbs could be hurting your heart on their own.

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.

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.