Fructose and glucose are both simple monosaccharide sugars. Both starch and sugar, whether sucrose or high-fructose corn syrup (HCFS), yield glucose in large amounts when digested.

Fructose Fructose, or “fruit sugar,” is a monosaccharide like glucose (1). It’s naturally found in fruit, honey, agave, and most root vegetables.

Despite their differences, sucrose and fructose have one thing in common, and that's how they affect your health. As a carbohydrate, sugar plays an important role in some of your body’s functions.