Melatonin and Immune System Support During Sleep When most people think of melatonin , they think of it as a natural sleep aid . But did you know that melatonin also plays a key role in supporting your immune system , especially while you sleep? This blog explores how melatonin impacts not only your sleep quality but also your body's defense system during rest. What Is Melatonin? Melatonin is a hormone naturally produced by the pineal gland in your brain. It helps regulate your circadian rhythm, your internal clock t hat tells you when to sleep and wake. Melatonin levels rise in the evening, signaling your body to wind down, and fall in the morning to help you wake up. While its role in sleep is well-known, recent research shows melatonin also acts as an antioxidant and immune modulator , meaning it supports immune balance and helps reduce inflammation. Melatonin's Role in Immune System Support When you sleep, your body does more than just rest. It repairs cells, produces ...