" This is just one example of how the booming smartwatch market – some analysts have predicted that more than 400 million devices will be sold worldwide by 2027 – is opening up a bold new era of preventative health. Masimo, Apple, Samsung, Withings, FitBit and Polar have all developed watches capable of recording an extraordinary amount of data, allowing measurements such as sleep quality, blood pressure, heart rhythm variation and blood oxygen saturation levels – a marker of how well the heart and lungs are functioning – to be tracked in real-time. "... Lire la suite