What are vitamins classified as?

Vitamins are classified as essential nutrients for growth and functioning because they play a crucial role in various bodily processes, including metabolism, immune function, and the maintenance of healthy skin and vision. Unlike energy-yielding nutrients, such as carbohydrates, proteins, and fats, vitamins do not provide energy themselves but are vital for the body's ability to extract and utilize energy from food.

Vitamins help in the synthesis of enzymes and hormones, support cellular function, and facilitate communication between cells. Each vitamin has its own specific functions; for instance, vitamin A is important for vision, B vitamins are essential for energy metabolism, vitamin C is crucial for immune function, and vitamin D aids in calcium absorption.

While other nutrients like proteins and minerals also play critical roles in health, they do not encompass the full range of functions that vitamins provide in promoting overall health and wellness. Thus, describing vitamins as essential nutrients reflects their importance in supporting overall body functions and growth.