What are essential nutrients?

Essential nutrients are those that the body cannot synthesize on its own and therefore must be acquired through diet. These nutrients play vital roles in various bodily functions, supporting growth, repairing tissues, and maintaining overall health. Examples of essential nutrients include certain amino acids, fatty acids, vitamins, and minerals, which are crucial for metabolic processes and the prevention of deficiencies. The body's inability to produce these nutrients highlights the importance of a well-balanced diet that includes a variety of foods to meet nutritional needs.

Other options suggest that some nutrients can be produced by the body or are exclusively found in supplements or used only for exercise energy, which does not capture the complete definition of essential nutrients, as all essential nutrients must be sourced from food to support bodily functions.