Dietary quality refers to the nutritional value and composition of food. It is an indicator of how healthy a diet is, taking into account factors such as the types and amounts of macronutrients (carbohydrates, proteins, and fats), micronutrients (vitamins and minerals), fiber content, and overall caloric density. A high-quality diet is one that provides adequate nutrition to support optimal health and physical functioning while minimizing the risk of chronic diseases such as obesity, heart disease, and type 2 diabetes.