In this episode of Revolution Health Radio, Chris takes a nuanced look at melatonin and challenges the idea that because it is a naturally occurring hormone, it is automatically safe for routine, long-term use. He explains melatonin's primary role as a circadian signal rather than a conventional sedative, explores concerns surrounding prolonged use and supplement quality, and examines recent research linking long-term melatonin use with heart failure risk—while emphasizing that observational research cannot establish causation. The episode also focuses on children, who may be particularly vulnerable to inappropriate or excessive melatonin use, and offers a foundational approach to better sleep centered on light exposure, consistent sleep schedules, stress regulation, sleep environment, and addressing underlying issues.
In this episode we discuss:
- Why melatonin is better understood as a hormonal signal for the body's internal clock than as a traditional sleeping pill
- How melatonin can influence circadian rhythm and why more isn't necessarily better
- What a recent study found regarding long-term melatonin use and heart failure, and the limitations of those findings
- Why label accuracy is a significant concern, including research finding substantial variation between labeled and actual melatonin content
- Concerns surrounding melatonin use in children
- Why addressing light exposure, screen use, sleep timing, stress, and circadian consistency may be more effective than relying on nightly supplementation
- Strategies for supporting healthy sleep and the role of supplements as support once foundational sleep habits are established
Show notes:
- Long-term melatonin use and incident heart failure in adults with chronic insomnia by Nnadi, E., et al.
- "Effect of Ashwagandha (Withania somnifera) extract on sleep: A systematic review and meta-analysis" by Cheah, K. L., et al.
- "Quantity of melatonin and CBD in melatonin gummies sold in the US" by Cohen, P. A., et al.
- "Melatonin natural health products and supplements: Presence of serotonin and significant variability of melatonin content" by Erland, L. A. E., & Saxena, P. K.
- "Exposure to room light before bedtime suppresses melatonin onset and shortens melatonin duration in humans" by Gooley, J. J., et al.
- "Effects of L-theanine administration on stress-related symptoms and cognitive functions in healthy adults: A randomized controlled trial" by Hidese, S., et al.
- "Melatonin and cardiovascular risk: An NHANES reality check after recent heart failure concerns" by Khan, B., & Lima, B. B.
- "Pediatric melatonin ingestions — United States, 2012–2021" by Lelak, K., et al.
- "Effects of saffron on sleep quality in healthy adults with self-reported poor sleep: A randomized, double-blind, placebo-controlled trial" by Lopresti, A. L., et al.
- "Oral magnesium supplementation for insomnia in older adults: A systematic review & meta-analysis" by Mah, J., & Pitre, T.
- "Melatonin supplementation, hyperprolactinemia, and incident heart failure: A proposed prolactin-mediated pathway for cardiovascular risk" by Savvidis, C., Thomopoulos, C., & Ilias, I. et al.
- "Sleep regularity is a stronger predictor of mortality risk than sleep duration: A prospective cohort study" by Windred, D. P., et al.
- "Melatonin treatment for age-related insomnia" by Zhdanova, I. V., et al.
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