Photoplethysmography Trend 2026

Photoplethysmography (PPG) is an optical technique that measures blood volume changes in tissues using light. It powers wearable heart-rate monitors and smartwatches, tracking pulse and oxygen saturation. Clinically, it aids vascular assessments and sleep studies. Athletes, patients with cardiac conditions, and everyday consumers benefit from its non-invasive, real-time health insights, enabling proactive wellness management and early detection of irregularities.