Carbohydrates

Carbohydrates are one of the main types of nutrients.Carbohydrates are either simple or complex, depending on their chemical structure.Carbohydrates consist of Carbon, Hydrogen, and Oxygen. The most common carbohydrate is glucose. Carbohydrates are also called saccharides. There are monosaccharides, disaccharides, and polysaccharides.

Monosaccharides are the smallest possible sugar unit. Examples include glucose, galactose or fructose. When we talk about blood sugar we are referring to glucose in the blood
Disaccharides are two monosaccharide molecules bonded together. They are bonded by condensation. Examples are lactose, and fructose.
Polysaccharides are a chain of two or more monosaccharides.

 http://health-club.org/foods-rich-carbohydrates

  Many institutions suggest that there is a significant correlation between a high intake of carbohydrates and increased risk of diabetes.Diabetes is a disease in which your blood glucose, or sugar, levels are too high. With type 1 your body does not make insulin. With type 2 diabetes the more common type, your body does not make or use insulin well. Without enough insulin, the glucose stays in your blood. This can cause problems with your eyesight, kidneys and liver.

http://www.livestrong.com/article/260404-consequences-of-a-high-carbohydrate-diet/#ixzz2BHBZ3jvJ