Phase 1 · Understand the Body — Why the disease behaves the way it does.
The One-Line Truth
The whole disease in one chain
Everything on this page exists to explain this line.
Find patients who might become confused in the hospital, then use simple, non-drug steps to keep their brain organized before delirium starts.
Hospital as a confusing dark maze
Imagine a person navigating a familiar house at night with all the lights on, doors open everywhere, strangers walking around every hour, and earplugs in their ears. The brain is like the navigator—it needs clear landmarks (glasses and hearing aids are like windows and signs), a regular sleep schedule (like knowing it gets dark at 9 PM every night), and freedom to walk around (like being able to check each room). When the hospital removes these—dark room with no clock, woken every hour, stuck in bed—the navigator's GPS stops working and it confuses the bathroom for the bedroom. Add a sleeping pill that blocks the navigator's 'wake-up' chemical (acetylcholine is like the brain's energy drink that keeps you sharp), and now the navigator cannot even think clearly enough to ask for help. The delirium is what happens when ALL these tools break at once—the person stops knowing which house they are in.
AGS Beers Criteria 2023 · Hospital Elder Life Program (HELP) · NICE Clinical Guideline CG103 (Delirium) · American Delirium Society · reviewed 2026-07-07