Sugars like glucose and fructose provide instant energy boosts are known as what?

Sugars like glucose and fructose that can provide relatively quick energy are known as simple carbohydrates. They contain one or two sugar units, making them chemically simpler than starches and many other complex carbohydrates.

Glucose is the body’s main blood sugar and a primary fuel for cells. Fructose, often called fruit sugar, occurs naturally in fruit, honey, and some vegetables. Both are monosaccharides, meaning they consist of a single sugar unit. Sucrose, or table sugar, is a disaccharide made from one glucose molecule and one fructose molecule.

Simple carbohydrates are generally digested and absorbed more quickly than complex carbohydrates, so they can raise blood glucose sooner. However, “simple” does not automatically mean unhealthy. Fruit and milk contain naturally occurring sugars along with nutrients, while sweets and sugary drinks often provide added sugar with little fiber or nutritional value.

Complex carbohydrates include starches such as those in potatoes, rice, and grains. Fiber is also a carbohydrate, but it is not fully digested by the human body.