In people with high triglycerides, a low-fat high-carb diet changes where the fat in their blood comes from — but scientists still can't explain where about 1 in 5 of those fat molecules are coming...

People with high triglycerides process fat differently than those with normal levels when eating a low-fat, high-carb diet — their bodies use different fat sources and clear fat slower, which may explain why this diet raises their triglycerides more than it does in others.

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.

For people with a genetic tendency to have high triglycerides, eating a diet where 60% of calories come from carbohydrates raises fasting triglyceride levels and lowers HDL cholesterol, without changing total cholesterol levels.