olfaction

Your Nose Knows: How Smell Loss Signals More Than a Cold — Links to 139 Diseases and What to Do About It

A large prospective study links smell disturbances to at least 139 conditions. Olfactory loss can be an early sign of neurological, ENT, metabolic, or systemic disease — and a practical, underused screening tool clinicians can adopt.

APOE ε4, Age and Sex Converge to Disturb Anterior Olfactory Nucleus Physiology: Electrophysiologic Evidence for Early Alzheimer’s Vulnerability