A smartwatch that warns you before you faint may sound like science fiction. But on May 7, 2026, Samsung announced a study showing that data from the Galaxy Watch6 could help predict vasovagal syncope, a common kind of fainting. In this condition, heart rate and blood pressure drop suddenly. The fainting itself is usually not deadly, but the fall can cause serious injuries such as fractures or concussions. (news.samsung.com)
In the study, 132 patients with possible syncope took part in a hospital test called a head-up tilt test. While they were tested, they wore a Galaxy Watch6. The watch used a PPG sensor, which reads blood-flow signals from the wrist. Researchers changed those signals into heart rate variability data and then used an AI model to find patterns that appeared before fainting. The study was published in European Heart Journal – Digital Health. (news.samsung.com)
The result was exciting: the system predicted fainting up to five minutes before it happened, with 84.6% accuracy. In simple words, the watch often noticed danger early enough to give a person time to sit down, lie down, or call for help. A five-minute warning could be very important for safety, especially for people who faint again and again. (news.samsung.com)
Still, this is not a finished everyday feature yet. The researchers said the model was tested in a controlled hospital setting, and it still needs more testing with larger, independent groups. They also said scientists still need to prove that real-time alerts truly reduce fainting injuries in daily life. Samsung says it plans to keep developing its wearable health technology, so this news looks like an important first step, not the final product. (news.samsung.com)










