Protein plays a crucial role in teenage nutrition as it is essential for growth, development, and overall health. During the teenage years, the body undergoes rapid growth and development, and adequate protein intake is necessary to support these changes.

Proteins are made up of amino acids, which are the building blocks of the body. They are needed for the development of muscles, bones, and other tissues. Additionally, proteins play a key role in the production of enzymes, hormones, and antibodies, which are essential for various bodily functions and immune system support.

Teenagers who are involved in sports or physical activities require sufficient protein to support muscle repair and recovery. Including protein sources such as lean meats, poultry, fish, eggs, dairy products, legumes, and nuts in their diet can help meet their increased protein needs.

It's important for teenagers to consume a variety of protein sources to ensure they are getting all the essential amino acids necessary for optimal growth and development. Additionally, incorporating protein into balanced meals and snacks can help maintain steady energy levels and promote satiety, which can be beneficial for weight management.

References:

1. "Protein in diet." MedlinePlus, U.S. National Library of Medicine, 2021, medlineplus.gov/ency/article/002467.htm.
2. Wolfe, Robert R. "The underappreciated role of muscle in health and disease." The American Journal of Clinical Nutrition, vol. 84, no. 3, 2006, pp. 475-482.