Abstract

The integration of smart wearables in preventive healthcare represents one of the most dynamic technological transformations of the twenty-first century. As healthcare ecosystems across the globe shift toward early detection self-monitoring personalised wellness management and data-driven decision-making smart wearables such as fitness trackers smartwatches biosensors continuous glucose monitors electronic patches and AI-powered diagnostic accessories have become essential tools for predicting and preventing chronic illnesses. Preventive healthcare is no longer limited to periodic medical check-ups it has transitioned into a continuous real-time data-supported model powered by digital devices worn on the human body. The abstract explains how these wearables collect physiological behavioural and environmental data to monitor heart rate variability oxygen saturation sleep cycles physical activity calorie expenditure blood pressure stress levels electrocardiogram patterns and biochemical