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Need

A need is something that is necessary for organisms to live a healthy life. needs are distinguished from wants because a deficiency would cause a clear negative outcome, such as dysfunction or death. needs can be objective and physical, such as food, or they can be subjective and psychological, such as the need for self-esteem. on a social level, needs are sometimes controversial. understanding needs and wants is an issue in the fields of politics, social science, and philosophy.