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The main purpose of the gastrointestinal (GI) tract is to digest food, absorb nutrients, and eliminate waste. It breaks down ingested food into smaller molecules through mechanical and chemical processes, allowing nutrients to be absorbed into the bloodstream. The GI tract also plays a critical role in maintaining fluid and electrolyte balance and supports immune functions by hosting beneficial gut bacteria. Overall, it ensures that the body receives the necessary nutrients to function effectively.

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2mo ago

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