Human nutrition is the study of how the body uses food to maintain health, support growth, and provide energy. It involves understanding the different nutrients, such as carbohydrates, proteins, fats, vitamins, and minerals, that are essential for bodily functions. A balanced diet, which includes a variety of foods, helps ensure that individuals receive the necessary nutrients for optimal health. Proper nutrition is crucial for preventing diseases and promoting overall well-being. It influences factors like metabolism, immune function, and mental health. By making informed food choices, individuals can improve their quality of life and reduce the risk of chronic conditions such as obesity, diabetes, and heart disease.