Health wearables: smartwatches become medical tools

Smartwatches have crossed a threshold in 2026. The Apple Watch Series 11 now detects cardiac arrhythmia with 98% reliability. The Samsung Galaxy Watch 8 offers non-invasive blood glucose monitoring (in testing phase). Garmin integrates stress and athlete recovery sensors. Insurers are starting to offer discounts for smartwatch users who maintain regular physical activity. The line between gadget and medical tool is blurring.