Eating fewer carbs—especially very low amounts—seems to lower blood fat levels more than eating a little more carbs, which might be better for heart health.

Eating a diet low in fat and high in carbs makes the body less able to clear fat from the blood, causing triglyceride levels to rise sharply.

When you swap fats (like butter or oil) for carbs (like bread or sugar), your blood fat levels (triglycerides) tend to go up.

When people eat less fat and more carbs, their blood fat levels (triglycerides) go up a lot—even if their cholesterol stays the same—and high blood fat is linked to heart disease.

When overweight mice eat fewer calories, only those on a low-carb, high-fat diet see a big drop in blood fats called triglycerides — other diets don’t have the same effect.

Eating too much white bread, sugary snacks, and soda is linked to higher chances of developing insulin problems, bad cholesterol, and body-wide inflammation.