Eggs are part of the proteins food group, according to the U.S. Department of Agriculture. Daily protein requirements are dependent on factors such as age and a person's normal level of physical activity. Young children require less protein than adolescents and adults.
Eggs are extremely high in protein and low in calories. One egg contains approximately 70 calories and 6 grams of protein. Additional nutrients found in eggs include antioxidants, vitamins and minerals. These nutrients benefit eyesight, muscle strength, brain function and weight management. They also play a role in healthy pregnancy. Eggs remain one of the least expensive breakfast foods available as of 2014.