Scientists have discovered a surprising link between long-term melatonin use and heart failure in patients with chronic insomnia.
Marketed as "nature's sleep switch", melatonin has become a popular nightly habit for millions. However, new research presented at the American Heart Association's Scientific Sessions 2025 suggests that the supplement may have unintended consequences on the heart.
Learn how scientists uncovered a surprising link between long-term melatonin use and heart failure in chronic insomnia patients.
Author's summary: Melatonin may harm the heart in insomnia patients.