Melatonin & Heart Health – The Risks
The popular sleep aid is under scrutiny following a large observational study linking chronic use to an elevated risk of heart failure and mortality.
Melatonin has long been regarded as a safe, “natural” supplement for sleep regulation. However, new data presented at the American Heart Association’s (AHA) Scientific Sessions 2025 has prompted health experts to urge caution, particularly regarding long-term, nightly use.
The study was a research abstract. Abstracts presented at American Heart Association’s scientific meetings are not peer-reviewed, and the findings are considered preliminary until published as full manuscripts in a peer-reviewed scientific journal.





