Which nutrient is the primary source of energy for our body?

Carbohydrates are the main source of energy for our body. Foods rich in carbohydrates are called energy-giving foods. 

Carbohydrates are present in food items in the form of sugars and starch. Carbohydrates provide energy for all the cells and tissues in the body. Some important sources of carbohydrates are bananas, rice, wheat, sugars, potatoes, millet, etc.