The human being eats foods and drinks that provide nutrients that are essential for the development, maintenance and protection of the body. The major constituents of the diet are water, carbohydrates, proteins, fats, vitamins and minerals. The human eats to satisfy hunger and obtain energy and nutrients for growth, repair and other bodily functions. Food is broken down in the digestive system and absorbed to provide energy, building materials and regulatory molecules to keep the body functioning properly. What we eat, how we eat and how nutrients are utilized depends on many factors including climate, culture, lifestyle and individual needs. A balanced diet adapted to local conditions is important for health.

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