The use of wearable devices to monitor selected functions of the human body

Because of the widespread use of wearable devices in everyday life, there is a growing demand to acquire good-quality data on as many vital functions as possible for better and faster diagnosis and treatment implementation.This review focuses on the recent advancements and progress of wearable devices' technology and their possible implementation for improving users' health, mainly in cardiology, sleep, and stress.In cardiology, there is a focus on creating a device that records good-quality electrocardiograms and can diagnose more than atrial fibrillation.A growing number of studies also focus on finding the best way of estimating blood pressure using wearable devices.Acquiring reliable data on experienced stress can help users to manage it and professionals to alleviate it, resulting in better compliance.Sleep monitoring can help raise awareness, prevent many diseases, and improve users' overall health.In conclusion, there are constant attempts for improving wearable devices to better monitor vital signs in everyday life.Most wearable devices lack validation in their accuracy for detecting, tracking, and analyzing some vital signs.With their ever-growing popularity, it is of utmost importance to ensure the data they gather is of good quality.