University of Zurich Jun 12 2026 A research team at the University of Zurich (UZH) has discovered biomarkers of sleep loss in saliva. Acute sleep deprivation can be detected using just a single saliva sample. This method could help improve road safety and safety in high-risk professions in the future. Good sleep is essential for our physical and mental health. And yet, sleep problems are widespread. According to the latest Swiss Health Survey, around one-third of the population report suffering