Health
September 2, 2026
Long-Term Melatonin Use Tied to 90% Higher Heart Failure Risk in Insomnia Patients
A large multinational cohort study of more than 130,000 adults with chronic insomnia found a sharp jump in heart failure diagnoses, hospitalizations, and deaths among those who took melatonin for a year or more, though researchers caution the findings don't prove cause and effect.