Unlocking the Heart's Guardian: Exploring Melatonin's Impact on the Cardiovascular System

Cardiol Rev. 2024 Dec 3. doi: 10.1097/CRD.0000000000000822. Online ahead of print.

Abstract

Melatonin has become a popular choice for managing insomnia and sleep-related issues due to its effectiveness in promoting sleep and its minimal risk of side effects. This has led many individuals to opt for over-the-counter melatonin as an alternative to traditional sleep medications. Recent research indicates that melatonin not only aids in addressing sleep problems but also enhances muscle recovery and performance, thereby improving daytime functioning, particularly among athletes. In the United States, the prevalence of melatonin supplement usage has risen significantly from 0.08% in 2005-2006 to 0.28% in 2017-2018. Individuals with conditions such as heart failure, hypertension, coronary heart disease, and cardiovascular risk factors like diabetes and obesity typically exhibit lower levels of melatonin in their blood at night. This deficiency increases the likelihood of experiencing adverse cardiac events. Studies have highlighted melatonin's role not only in regulating sleep but also in safeguarding against cardiovascular diseases by influencing various cardiovascular functions. In summary, the increasing utilization of melatonin underscores its recognized efficacy in mitigating sleep disturbances, with emerging evidence suggesting potential benefits for cardiovascular health. As ongoing research explores additional therapeutic avenues, the multifaceted impact of melatonin emphasizes its significance in promoting overall well-being.