What are the six classes of nutrients?

The six classes of nutrients are recognized as essential components that the body needs to function properly. This classification includes fat, carbohydrates, proteins, vitamins, minerals, and water. Each group plays a vital role in maintaining health and supporting bodily functions.

Fats provide a concentrated source of energy and are crucial for absorbing certain vitamins. Carbohydrates are the body's primary source of energy, while proteins are necessary for growth, repair, and maintenance of body tissues. Vitamins and minerals support a wide array of biochemical and physiological functions, including immune response, bone health, and overall metabolic activities. Water, an essential nutrient, is vital for hydration, temperature regulation, and as a medium for biochemical reactions.

The other choices include components that do not fit the established classes of nutrients. For instance, fiber, while important for digestive health, is often considered as part of carbohydrates but is not classified as a standalone nutrient. Additionally, nucleic acids and enzymes are involved in biological processes but are not categorized as essential nutrients needed by the body in the same manner as the six recognized classes.