Definition
Appetite is shaped by hormones, blood glucose, sleep, stress, emotion, social context, and cultural rhythm. Changes in appetite are almost always multi-causal.
Why it matters
Simplistic explanations for appetite changes fail patients. Whether appetite increases, decreases, or fluctuates, understanding contributors opens the door to better care.
The Science
Leptin, ghrelin, insulin, cortisol, cytokines, and vagal signals all shape appetite. Depression, grief, illness, and medications alter it. So do sleep debt and stress.
The NSI Perspective
NSI treats appetite as a system-level readout, not a moral scoreboard.
Clinical Implications
Persistent appetite change deserves broad evaluation, including physical, psychiatric, medication, and sleep contributors.
Practical Application
Notice appetite as information about your whole state. Trying to override it without understanding it rarely serves you.
References
- 1.Berthoud HR, Morrison C. The brain, appetite, and obesity. Annu Rev Psychol. 2008;59:55–92.