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.
Five or more medicines at once raise the risk of dangerous drug interactions, side effects, and falls—especially in older adults.
The Overwhelmed Kitchen Brigade
Imagine a restaurant kitchen where the head chef (your liver) breaks down ingredients and the dishwasher (your kidneys) clears the mess. When five meals arrive, the brigade handles it fine—each cook knows their job, timing is smooth, no chaos. But when fifty orders flood in at once, the head chef can't chop fast enough, the dishwasher drowns in dirty pans, and cooks start grabbing each other's ingredients by mistake. One cook needs salt but grabs the sugar jar (drug interaction), another cook's station floods because drainage is blocked (kidney backup), and someone faints from the heat and confusion (fall from toxicity). The real problem isn't any single meal—it's the system receiving more orders than it was designed to handle, and nobody at the front door is asking 'Do we really need all fifty meals right now?' That's polypharmacy: too many 'orders' (medicines) for the body's processing capacity, compounded by no one reviewing whether each order is still necessary.
American Geriatrics Society Beers Criteria 2023 · STOPP/START Criteria (Screening Tool of Older Persons' Prescriptions / Screening Tool to Alert to Right Treatment) · CDC Medication Safety Program · Institute for Healthcare Improvement (IHI) Age-Friendly Health Systems · reviewed 2026-07-07