How many categories of nutrients does the human body need from food?

The human body requires six categories of nutrients from food to function effectively. These categories include carbohydrates, proteins, fats, vitamins, minerals, and water. Each nutrient plays a critical role in maintaining various bodily functions and overall health.

Carbohydrates are the primary source of energy, proteins are essential for growth and repair of tissues, and fats serve as a concentrated energy source and support cell structure. Vitamins and minerals are crucial for numerous biochemical processes, including metabolism and immune function. Water, often overlooked, is vital for hydration, temperature regulation, and facilitating various bodily functions.

Understanding these six categories helps to emphasize the importance of a balanced diet, ensuring that all necessary nutrients are consumed for optimal health.