Long-term melatonin use linked to 90% higher heart failure risk

A new analysis links nightly melatonin supplementation to a 90% increase in heart‑failure risk, a figure that could reshape how millions manage sleep. For regular users, the prospect of a dramatically higher chance of cardiac failure adds a serious health dimension to a habit often seen as benign. Patients who rely on the over‑the‑counter sleep aid may now confront warnings that extend beyond insomnia relief, potentially prompting them to reconsider dosage or seek alternatives.

Melatonin is commonly taken to counteract insomnia or shift‑work disruption, with many health blogs promoting its nightly use. Science Daily cites a recent study that quantified the 90% risk elevation, a claim echoed by News18 and Health and Me, while the Elko Daily Free Press noted the controversy among researchers. The report does not detail the study’s design, leaving the medical community to await peer‑reviewed confirmation.

Future investigations will need to clarify dosage thresholds and identify which patient groups are most vulnerable.