What does the term nutrition refer to?

The term nutrition encompasses more than just the act of eating food; it specifically refers to the process of digestion and absorption of nutrients from food. This includes how food is broken down in the body, how nutrients are assimilated, and how they are used for energy, growth, and overall health. Understanding nutrition is crucial for promoting health and preventing diseases, as it involves the intake of carbohydrates, fats, proteins, vitamins, and minerals that the body requires for proper functioning.

While the other options touch on related concepts, they do not capture the full essence of nutrition. For instance, the study of diseases is more aligned with fields such as pathology and medicine, and the act of exercising relates to physical fitness rather than the nutrient management aspect of health. Together, digestion and absorption highlight the biochemical processes that underpin nutrition and its role in maintaining a healthy body.