Fructose is a simple monosaccharide (a single sugar unit) found mainly in fruits and some vegetables. It is the sweetest naturally occurring carbohydrate but, in food, it is always present, along with other sugars.
Fructose, when combined with glucose, forms a disaccharide (a two sugar unit) called Sucrose, also known as table sugar.
While fructose is a natural sugar, and is part of the human diet, the excess consumption of fructose can have serious metabolic consequences.
Current nutrition guidelines recommend the consumption of 2 to 4 servings of fruit per day. When the source of sugar is whole fruit, it has a more limited impact on blood sugar levels as compared to added sugar like table sugar & High Fructose Corn Syrup (HFCS).