The Functional Medicine Matrix was developed by the Institute of Functional Medicine in Gig Harbor, WA. It is a schematic depiction of the clinical thought process that is Functional Medicine. In my early days of functional medicine training, I used to record my patients’ stories (their histories) by making notes on a blank copy of the Functional Medicine Matrix. Core Imbalances are organized in a circle. Inside the circle are listed Antecedents (events that came before the “breakdown” in function), Triggers (experiences that initiated symptoms), and Mediators (experiences which maintained or brought a return of prior symptoms). Outside the circle are spaces for writing the Assessment and Plan for each Core Imbalance.