Could Melatonin Be Silently Harming Your Heart?
Learn how scientists uncovered a surprising link between long-term melatonin use and heart failure in chronic insomnia patients.
Marketed as nature’s sleep switch, melatonin has become a nightly habit for millions. But new research presented at the American Heart Association’s Scientific Sessions 2025, suggests the supplement may do more than quiet the mind — it could also trouble the heart.
- Long-term melatonin use (for a year or more) was linked with a nearly doubled risk of developing heart failure.
- More than triple the risk of hospitalization for heart failure.
- Nearly twice the risk of death over five years.
This research is based on a review of more than 130,000 adults with insomnia.
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Author's summary: Melatonin may harm the heart.
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