Exercise accelerates fructose utilization

Fructose is a sugar that is found in fruit and drinks sweetened with high-fructose corn syrup. Fructose is mainly metabolized in the liver, where it is converted into glycogen (stored carbohydrates), triglycerides (fat) and glucose (blood sugar). Some experts blame the obesity epidemic on excessive consumption of sugar-rich soft drinks - particularly drinks containing high fructose corn syrup.

According to a study led by Leonie Egli from the University of Lausanne in Switzerland, exercise accelerates fructose utilization and could reduce its effects on fat storage. The scientists measured the metabolism of fructose consumed at rest, 90 minutes before exercise or 75 minutes after exercise (one hour of moderate-intensity cycling). Exercise following fructose consumption resulted in rapid fructose utilization and minimal fat production in the liver. In contrast, consumption of fructose at rest or after exercise caused a sharp increase in blood glucose levels and blood lipid levels, which could ultimately contribute to obesity, insulin resistance and diabetes.

Consuming beverages rich in high fructose corn syrup increases blood sugar levels and fat production in the liver. You can reduce the negative effects of high-sugar beverages by exercising after consuming them.

(American Journal Clinical Nutrition, 103: 348 -55, 2016)