Could Melatonin Be Silently Harming Your Heart?
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 nightly habit for millions, but new research suggests it may have negative effects on the heart.
A review of over 130,000 adults with insomnia found that long-term melatonin use was linked to:
- a nearly doubled risk of developing heart failure
- more than triple the risk of hospitalization for heart failure
This research was presented at the American Heart Association's Scientific Sessions 2025.
the supplement may do more than quiet the mind — it could also trouble the heart
Author summary: Melatonin may harm the heart in insomnia patients.