Nutritional experts have for years debated on the primary culprit for increasing obesity. While diets that are high in fat and carbohydrates contribute to the condition, it turns out, fructose may be one true driver of obesity, according to a study.

According to Richard Johnson, from University of Colorado Anschutz Medical Campus, the primary problem in obesity is fructose -- which is present in table sugar and high fructose corn syrup. Fructose can also be made in the body from carbohydrates (particularly glucose). When fructose is metabolised, it lowers the active energy in the body (known as ATP, or adenosine triphosphate) which causes hunger and food intake.