What is Fructose?

Fructose is a monosaccharide, simple sugar, that is found in fruits and vegetables and is used by the body for energy. Fructose has a low glycemic index (GI) and is one of the three most important blood sugars. Berries, melons, root vegetables such as sweet potatoes and beets, as well as onions and honey, all contain fructose. It is sometimes called fruit sugar and is known to be sweeter than glucose.