Jun 20 2025 New research, presented today at the European Academy of Neurology (EAN) Congress 2025, has uncovered a powerful link between nighttime heart rhythm and future health conditions, even in people with no obvious sleep problems. The study, which was conducted at the Department of Neurology, Inselspital, the University Hospital of Bern, analysed 4,170 individuals over an observation period of 13,217 person-years, found that heart rate variability (HRV) during sleep can serve as a