Most people consume many different types of sugars from a variety of foods and beverages in their diet. A high intake of sugar is linked to an increased risk of obesity, type 2 diabetes, cardiovascular disease, and certain cancers. But whether some sugars are healthier (or worse) than others remains a question of interest to many.
Sugar provides energy that our cells need to survive. Sugar is a type of carbohydrate, a macronutrient that provides energy (in the form of calories) from foods and beverages we consume. Carbohydrates are classified into two subtypes of sugar: monosaccharides, or “simple sugars” (consisting of one molecule) and disaccharides (two molecules). The monosaccharides include glucose, fructose, and galactose. The major disaccharides include sucrose (one glucose molecule and one fructose molecule), lactose (one glucose molecule and one galactose molecule), and maltose (two glucose molecules).
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