Study Warns Against Long-Term Melatonin Use
Melatonin supplements are gaining traction amongst those looking for better sleep quality. This naturally occurring hormone helps regulate our sleep-wake cycle, peaking at night and tapering off during the day. In the U.S., these supplements are readily available over the counter.
However, a recent study has raised concerns about the long-term use of melatonin, revealing a significant increase in the risk of heart failure, hospitalization, and even death among users.
Details of the Study
Conducted by the American Heart Association (AHA), this observational study analyzed health records of over 130,000 adults struggling with insomnia. Half of the participants had been on melatonin for at least a year, while the other half took no supplements at all. Interestingly, people who were already taking prescription sleep medications or had existing heart failure were not included in this analysis.
The results were striking: long-term melatonin users had a 90% increased risk of developing heart failure compared to non-users. Additionally, those filling at least two melatonin prescriptions had an 82% higher chance of heart failure than those who didn’t take the supplement.
Impact of Melatonin on Heart Health
According to a secondary analysis, the odds of hospitalization for heart failure were nearly 3.5 times greater for those taking melatonin, with a doubling of the risk of death. Heart failure affects millions of adults in the U.S. and occurs when the heart struggles to pump sufficient blood to meet the body’s needs.
Dr. Ekenedrichukwu-Nnadi, the study’s lead author, remarked that these findings challenge the assumption that melatonin supplements are completely safe.
Implications for Health Practices
If corroborated, these findings could significantly change how healthcare professionals recommend sleep aids. The researchers note that there are limitations to their study, including insufficient data on the severity of insomnia and potential psychiatric conditions.
Nnadi mentioned the possibility that existing conditions like anxiety or depression could complicate the observed relationships between melatonin use and heart risks. However, the study can’t definitively prove causation, highlighting the need for further investigations into melatonin’s effects on heart health.
Expert Opinions
Dr. Wendy Troxell from the RAND Corporation referred to the findings as an important warning for both consumers and healthcare providers. She emphasized the misconception that natural products are inherently safe, noting the significant variability in melatonin supplement formulations and dosages.
Troxell also pointed out that melatonin doesn’t act like a typical sleep aid; rather, it signals to the body that it’s time to sleep but may not actually induce sleep. Interestingly, many studies have shown limited evidence supporting melatonin’s efficacy for chronic insomnia.
She raised concerns about the increase in emergency visits related to children accidentally overdosing on melatonin gummies, highlighting the need for caution.
Recommendations for Sleep Treatment
Troxell advocates for behavioral therapies, like cognitive-behavioral therapy for insomnia, which have demonstrated more effective and lasting benefits than medication.
In response to the study, the Council for Responsible Nutrition (CRN) urged caution, emphasizing that the data is early and non-peer-reviewed. It also pointed out that sleep-deprivation itself can contribute to heart health issues. They plan to institute new labeling guidelines for melatonin in 2024, recommending limited use and advising consultation with healthcare professionals for long-term sleep problems.
In summary, while melatonin may seem like a convenient solution for sleep difficulties, the emerging evidence suggests it may not be as benign as widely believed. As always, it’s wise for individuals to consult with their healthcare provider before adding any supplements to their routine.
