Food

Food consists essentially of protein, carbohydrates, fat and other nutrients and is used in the body of an organism to support growth and life processes and to provide energy. The absorption and utilization of food by the body is fundamental to nutrition and is facilitated by digestion. Plants, which convert solar energy into food through photosynthesis, are the main source of nutrition. Animals that feed on plants often serve as a food source for other animals.


Hunting and gathering, horticulture, grazing, and the development of agriculture are the primary means by which humans have adapted to their environment to feed themselves. Food has long served as a vehicle of culture in human societies and has been a driving force of globalization. This was especially the case in the early stages of European trade and colonial expansion, when foods such as hot red pepper, corn, and sweet potatoes spread across Europe to Africa and Asia.

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Always consult your healthcare provider to ensure that the information displayed on this page applies to your personal circumstances.

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