Melatonin's Hidden Heart Risk
Millions have adopted melatonin as a nightly habit to improve sleep, but new research reveals a surprising link between long-term use and heart problems.
A study of over 130,000 adults with insomnia found that taking melatonin for a year or more is associated with a nearly doubled risk of heart failure, triple the risk of hospitalization for heart failure, and almost twice the risk of death over five years.
Marketed as nature’s sleep switch, melatonin has become a nightly habit for millions.
These findings were presented at the American Heart Association’s Scientific Sessions 2025, raising concerns about the potential cardiac risks of long-term melatonin use.
Author's summary: Melatonin may harm heart health.
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