Digital Biomarkers: Signals Your Body Sends

Your body is constantly generating signals—most go unnoticed, some reveal risk, and a few can change outcomes if interpreted in time. Digital Biomarkers: Signals Your Body Sends explores how everyday data from wearables, smartphones, and sensors becomes a new language for understanding health.
This book is about interpretation, not gadgets. It explains how movement patterns, heart rhythms, voice changes, sleep cycles, and behavioral signals act as proxies for biological processes. Rather than replacing clinical tests, digital biomarkers complement them by capturing health as it unfolds in daily life.
The focus is on meaning and reliability. Readers learn why raw data is not insight, how context separates noise from signal, and why validation matters when algorithms influence care decisions. The book also addresses privacy, bias, and the risk of over-monitoring.
This book asks practical questions:
• Which signals are clinically meaningful—and which are not?
• How early detection changes prevention and care
• Why continuous data alters diagnosis timelines
• Where digital biomarkers fail without context
This book is for clinicians, researchers, product builders, and health innovators. If health is a stream, not a snapshot, this book shows how digital biomarkers help us listen intelligently.