Health Is Melatonin Really Safe? New Study Uncovers a Hidden Heart Risk by Health Editor — Dr. Nadia Rowe November 4, 2025 by Health Editor — Dr. Nadia Rowe November 4, 2025 Long-Term Melatonin Use Linked to Higher Heart Failure Risk in Insomnia Patients A large observational study presented at the … 0 FacebookTwitterPinterestEmail