healthcare.digital November 23, 2025
Introduction: The Arch of Self Knowledge
The evolution of the Quantified Self (QS) movement from 2010 to 2025 represents one of the most profound shifts in the history of personal health, technology, and sociology. What began as a fringe subculture of “bio-hackers” and data enthusiasts in the San Francisco Bay Area has metastasised into a global infrastructure for predictive healthcare, underpinning a multi-billion-dollar market for wearable technology, remote patient monitoring (RPM), and personalised medicine.
In its nascent stages around 2010, the movement was defined by the motto “self-knowledge through numbers,” a philosophy articulated by Wired editors Gary Wolf and Kevin Kelly. Early adherents engaged in manual, laborious tracking of biological, physical, and behavioural metrics, often driven by a desire to...
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