Melatonin increases the speed of falling asleep and adds to the quality of sleep. It also offers strong protection against free radicals and supports healthy DNA. Melatonin is a hormone derived from the amino acid tryptophan. It's primarily synthesized by your pineal gland in your brain and released mostly at night to make falling asleep easier. In addition to healthy sleep support, melatonin offers protection against free radicals and has been shown to support immune health, healthy brain function and more. Melatonin and sleep : A good night's sleep is crucial for overall health and well-being. But many people experience difficulty falling asleep and staying asleep. Healthy sleep patterns are governed by your body's circadian rhythms, and melatonin helps keep your circadian rhythms in tune. But melatonin release declines with age, and can be affected by jet lag, shift work and more. Melatonin promotes healthy sleep/wake patterns and encourages the onset, duration and quality of sleep. Melatonin and oxidation : Melatonin also offers strong protection against oxidative stress. Melatonin is especially important for healthy cellular DNA and mitochondria support because it helps inhibit oxidative damage by directly scavenging free radicals. Melatonin does so more effectively than many other antioxidants. Melatonin and immune health : Melatonin has a beneficial impact on the immune system. It activates T-helper cells, which trigger other immune cells, boosting immune system response to foreign molecules. Melatonin and cognitive health : Age-related cognitive decline may be directly correlated to melatonin levels. Melatonin supplementation can help support the brain's normal protection against free radicals and may help support cognitive function.