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How Melatonin Boosts Your Immune System

Melatonin does more than just regulate your sleep cycle — it also helps to keep your immune system strong. Here's how.

a man blows his nose in bed

The body’s immune system protects us from harmful viruses and bacteria. It also identifies and destroys mutated human cells that can ­develop into cancer. Melatonin ­increases the level of circulating natural killer cells, which bolsters the immune system’s ability to ward off diseases ­including colds and cancer.

As of 2024, more than a hundred studies on PubMed pointed to the potential of melatonin in supporting treatment for a range of cancers, ­including breast, prostate, and bladder. ­Melatonin supplementation, which has been used for decades in ­patients under­going chemotherapy, “seemed to sensitize the cancer cells to the treatment,” say nutrition scientist Deanna Minich, PhD, CNS, IFMCPs.

Discover More of Melatonin’s Many Wonders

Melatonin is much more than just a sleep compound. It helps to regulate hormone regulator, boost immunity, and support mitochondira. Learn about the many roles this important and versatile molecule plays at “The Powerful — and Surprising — Health Benefits of Melatonin,” from which this article was excerpted.

Mo Perry is an Experience Life contributing editor.

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