Carbohydrates are organic compounds containing carbon, hydrogen and oxygen. They are the human body�s key source of energy. Carbohydrates are the most abundant organic compounds in nature. The carbohydrate group consists principally of sugar, starch, dextrin, cellulose, and glycogen, substances that form an important part of the human diet and that of many animals. Within living organisms, carbohydrates serve both structural and energy-storage functions.

Dietary Source 

Major Functions

Quantity

Rice, wheat,  pulses, fruits, vegetables, sodas , sugar, honey and jaggery . Provide energy sources for the brain, nervous system , heart and muscles. Carbohydrates some times spare proteins for the job of repairing tissue etc. Heart disease and cancer. High blood pressure. Anemia and kidney disorders.