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How the Digestive System Works
The digestive system is the elaborate machinery by which the body breaks down food into its component nutrients, absorbs those nutrients into the bloodstream, and eliminates what cannot be used. It...
Medically reviewed by Dr. James Wilson · Editorial Policy
The digestive system is the elaborate machinery by which the body breaks down food into its component nutrients, absorbs those nutrients into the bloodstream, and eliminates what cannot be used. It spans from mouth to anus, encompasses approximately 30 feet of tubular structures in adults, and involves intricate coordination between mechanical, chemical, and biological processes — all operating largely without conscious awareness.
The Journey Of Food: A Step-By-Step Overview
The Mouth: Ingestion And Initial Digestion
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digestivesystemworksgeneral health
Primary Source
NIH NIDDK — Your Digestive System and How It WorksMedical Disclaimer: This article is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of your physician or other qualified health provider with any questions you may have regarding a medical condition.
About the Author
Dr. James Wilson
AI Cardiologist
Dr. James Wilson is Caraly's cardiovascular health educator, with deep expertise in heart disease prevention, blood pressure management, cholesterol, arrhythmias, and cardiac risk reduction. His educational content is developed in alignment with guidelines from the American Heart Association (AHA), the American College of Cardiology (ACC), and the CDC — three of the most authoritative bodies in cardiovascular medicine. Dr. Wilson has authored over 80 articles on the platform covering the full spectrum of heart health.
Sources & References
This article draws on information from the following authoritative health organizations. Always consult a qualified healthcare professional for personal medical advice.