Melatonin and Respiratory Infection Risk in Seniors
Share this post
How melatonin may stave off pneumonia
When most people hear “melatonin,” they think of a sleep-support supplement. Fair enough: the hormone is well shown to support healthy circadian rhythms and improve the quality of sleep.
Thanks to melatonin’s strong antioxidant effects, however, it may also play a role in protecting us against the serious complications of respiratory tract infections.1 Melatonin supplementation may be of particular value to elders, a population at greater risk of developing pneumonia and other complications of respiratory tract infections. Even something as simple as the common cold can lead to complications in seniors.
Following our natural circadian rhythms, the concentration of melatonin in our blood increases dramatically from 15-20 pg/mL during the day to 30-180 pg/mL at night. It has been observed that nighttime melatonin concentrations seldom rise above 30 pg/mL in seniors, however.2 This could mean that seniors are essentially melatonin deficient.
Seniors are essentially melatonin deficient.
This drop in melatonin production likely predisposes seniors to low-grade, chronic inflammation, cancer, and a variety of other age-related diseases,1 and even may play a role in COVID-19 related hospitalizations and deaths. Thankfully, the anti-inflammatory and antioxidant benefits of melatonin supplementation have been observed in aging populations.3
Interestingly, supplementation with adaptogenic herbs has also been shown to reduce the incidence and severity of viral upper respiratory infections – at least in part on account of their ability to activate the body’s melatonin signaling pathway.4
Melatonin may further protect seniors from the viral respiratory infections that commonly precede pneumonia, thanks to the hormone’s immunomodulatory and antioxidant functions.5 Several animal studies have demonstrated melatonin’s ability to reduce viral load, decrease the incidence of virus-related illness, and lower the risk of death.6,7 For example, melatonin was found to have significant therapeutic potential in influenza A H1N1 virus infection and to improve the efficacy of concurrent antiviral drug treatment.8
Several animal studies have demonstrated melatonin’s ability to reduce viral load, decrease the incidence of virus-related illness, and lower the risk of death.
In mice with respiratory syncytial virus (RSV), melatonin has been observed to fight oxidation and stop the production of inflammatory chemicals. These findings suggest that melatonin can quell RSV-induced inflammatory lung injury.9 Treatment with melatonin has been shown to reduce viral load and/or virus-related pathology and death in several other animal disease models as well.6,7,10
Studies suggest melatonin may also have positive effects in other types of lung conditions, including the difficult to treat condition known as sarcoidosis, which can lead to fibrosis and scaring of the lungs.11-13
Clearly, melatonin is one versatile antioxidant. Given the heightened risk of viral respiratory infections and subsequent pneumonia within elder populations during this time, it is evident that we need more than good hygiene practices to keep our seniors healthy and safe. Melatonin is available over-the-counter, is generally affordable, and has an overall excellent safety profile. (Note that high doses of melatonin may sometimes cause vivid dreams or morning grogginess; starting with a low dose is typically better tolerated.)
Melatonin may very well stave off viral infections and their complications, offering us an easy-to-implement strategy for protecting a vulnerable and valuable stratum of our society.
ReferencesClick here to see References
- Panossian A, Brendler T. The role of adaptogens in prophylaxis and treatment of viral respiratory infections. Pharmaceuticals. 2020;13(9):1-32. doi:10.3390/ph13090236
- Karasek M. Melatonin, human aging, and age-related diseases. Exp Gerontol. 2004;39(11-12 SPEC. ISS.):1723-1729. doi:10.1016/j.exger.2004.04.012
- Carrillo-Vico A, et al. Melatonin: Buffering the immune system. Int J Mol Sci. 2013;14(4):8638-83. doi:10.3390/ijms14048638
- Panossian A, Seo EJ, Efferth T. Novel molecular mechanisms for the adaptogenic effects of herbal extracts on isolated brain cells using systems biology. Phytomedicine. 2018;50:257-284. doi:10.1016/j.phymed.2018.09.204
- Bonilla E, et al. Melatonin and viral infections. J Pineal Res. 2004;36(2):73-79. doi:10.1046/j.1600-079X.2003.00105.x
- Ben-Nathan D, et al. Protective effects of melatonin in mice infected with encephalitis viruses. Arch Virol. 1995;140(2):223-230. doi:10.1007/BF01309858
- Montiel M, et al. Melatonin decreases brain apoptosis, oxidative stress, and CD200 expression and increased survival rate in mice infected by Venezuelan equine encephalitis virus. Antivir Chem Chemother. 2015;24(3-4):99-108. doi:10.1177/2040206616660851
- Huang SH, et al. Melatonin possesses an anti-influenza potential through its immune modulatory effect. J Funct Foods. 2019;58:189-198. doi:10.1016/j.jff.2019.04.062
- Huang SH, et al. Inhibitory effect of melatonin on lung oxidative stress induced by respiratory syncytial virus infection in mice. J Pineal Res. 2010;48(2):109-116. doi:10.1111/j.1600-079X.2009.00733.x
- Ellis LGC. Melatonin reduces mortality from Aleutian Disease in mink (Mustela vison). J Pineal Res. 1996;21(4):214-217. doi:10.1111/j.1600-079X.1996.tb00288.x
- Cuzzocrea S, et al. Regulation of prostaglandin production in carrageenan-induced pleurisy melatonin. J Pineal Res. 1999;27(1):9-14. doi:10.1111/j.1600-079X.1999.tb00591.x
- Arslan SO, et al. The effect of melatonin on bleomycin-induced pulmonary fibrosis in rats. J Pineal Res. 2002;32(1):21-25. doi:10.1034/j.1600-079x.2002.10796.x
- Pignone AM, et al. Melatonin is a safe and effective treatment for chronic pulmonary and extrapulmonary sarcoidosis. J Pineal Res. 2006;41(2):95-100. doi:10.1111/j.1600-079X.2006.00326.x
Share this post
Dr. Erica Zelfand
How many psychotherapists does it take to change a light bulb? None. The light bulb has to want to change itself. This joke makes light of a prevailing truth about human psychology: the most powerful shifts happen when we are ready to lean in and change ourselves. There are all kinds of incentives out…
Herbs to Help You Adapt During Times of Stress
Herbs from around the world to help with stress, fatigue, and the chaos of life “What doesn’t bend breaks,” as the saying goes, and the degree to which we are expected to “bend” is ever increasing. Our ability to stay focused, adaptable, and calm is of the essence in our fast-paced, outcome-oriented culture. Although…
Big Pharma Banks on Fatty Liver Disease
Where there’s a buck to be made… With rapidly increasing rates of obesity and metabolic syndrome, nonalcoholic fatty liver disease (NAFLD) has become the most common causes of chronic liver disease in Western countries. NAFLD affects 10 to 46% of the United States population, with a worldwide prevalence of 6 to 35%. Actual numbers,…
Pine Bark for Blood Vessels Big and Small, Part 1 of 2
A natural solution for high blood pressure, hemorrhoids, and varicose veins At first glance, the ailments of high blood pressure, hemorrhoids, and varicose veins seem to have little in common. As any holistically trained healthcare provider knows, however, these conditions all share one common cause: poor vascular health. Also known as the circulatory system,…
What are Antioxidants?
How Do Antioxidants Support Healing? Certain foods – including beautifully-marketed “superfoods” – are celebrated for their antioxidant properties. But what does that even mean? What are antioxidants, and why are they important? What is oxidation? Oxidative stress? As the name implies, antioxidants fight oxidation. But what is oxidation? Let’s take a closer look: If…
CoQ10 vs Astaxanthin
Two Powerhouse Nutrients for Optimal Athletic Performance When it comes to introducing these two powerhouse nutrients, most people have heard of coenzyme Q10 (CoQ10). It has a great reputation as a powerful antioxidant and has been well researched as a cardioprotective nutrient., It has been shown to have a positive impact on blood lipid…