- The liver converts virtually all fructose, but not glucose, into fat.
- Fructose raises blood triglyceride level, an independent risk factor for heart disease
- Fructose may increase visceral fat (fat around the internal organs) another risk factor for heart disease
- Fructose intake may raise the risk of gout, a painful joint condition
- Fructose may suppress the effectiveness of leptin, the body’s appetite-curbing hormone
Drinks and food products sweetened with high-fructose corn syrup are the greatest sources of fructose in the U.S. diet. Whole fruits, the sugar of which is mainly in the form of fructose, is not generally a problem because the amount of fructose in one apple or orange is limited. However, fruit juice is more of a problem because several individual fruits may go into one glass of juice. So it is best to keep eating whole fruits but limit intake of sodas, juice drinks, juices, and syrups.