Human Health: Nutrition and Pharmacology - Hardcoverby Christopher Herald (Editor) Human health refers to the total state of social, physical as well as mental well being rather than just the absence of illness, infirmity or disease. Nutrients are components found in food that drive biological activity and are therefore necessary for human health. Good nutrition is required for a person to develop physically and maintain proper health. Nutrients can be classified as carbohydrates, proteins, minerals,