What refers to an ingested chemical that can be synthesized by the body if it is not consumed?

The term that refers to an ingested chemical that can be synthesized by the body if it is not consumed is a non-essential nutrient. Non-essential nutrients are those that the body can produce internally, meaning that although they are beneficial and can be taken in through diet, it is not strictly necessary to consume them because the body can synthesize them from other compounds or nutrients.

In contrast, essential nutrients cannot be synthesized by the body and must be obtained through diet to support bodily functions. Vitamins are a subset of essential nutrients that play vital roles in metabolism and overall health but are distinct in that they must be consumed. Macronutrients refer to carbohydrates, proteins, and fats, which are needed in larger amounts for energy and structural functions in the body; these nutrients include both essential and non-essential components.

Understanding these classifications helps clarify nutritional needs and supports informed dietary choices, emphasizing the importance of both essential and non-essential nutrients in maintaining health.