Which nutrient is critical for normal growth and development and serves as a concentrated energy source?

Fats are indeed critical for normal growth and development, primarily due to their role as a concentrated source of energy. Each gram of fat provides approximately nine calories, which is more than double the energy provided by carbohydrates or proteins. This high energy density makes fats essential, particularly for growing children and adolescents who have increased energy needs for development.

In addition to energy provision, fats are vital for the absorption of fat-soluble vitamins (A, D, E, and K), which are necessary for various bodily functions, including vision, immune function, and bone health. Fats also contribute to the structural components of cell membranes and play a role in hormone production.

While vitamins, water, and carbohydrates are important for overall health and well-being, fats distinctly stand out for their dual function as both an energy source and a critical component in the physiological processes that promote normal growth and development.