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All the processes involved in the taking in and utilization of
food substances by which growth, repair, and maintenance of
activities in the body as a whole or in any of its parts are
accomplished. Includes ingestion, digestion, absorption, and
A three-part process that gives the body the nutrients it
needs. First, you eat or drink food. Second, the body breaks the
food down into nutrients. Third, the nutrients travel through the
bloodstream to different parts of the body where they are used as
"fuel" and for many other purposes. To give your body proper
nutrition, you have to eat and drink enough of the foods that
contain key nutrients.