Melatonin
You’ve probably heard of melatonin as a popular sleep aid—but what exactly is it, and how does it help you sleep? Melatonin is a hormone your body naturally produces to help regulate sleep and wake cycles. However, its influence goes beyond just bedtime. Melatonin plays a role in your energy levels, mood, and overall circadian rhythm.
What is Melatonin?
Melatonin is a naturally occurring hormone. In humans, melatonin is produced in several tissues, including the brain (pineal gland), retina, and GI tract. In the brain, melatonin synthesis is stimulated by darkness. Once synthesized, it enters the blood stream and acts as an endocrine hormone involved in sleep regulation and a number of other cyclical physiological functions. Daily biological rhythms thought to be influenced by melatonin include activity and sleep, core body temperature, immune function, antioxidant defenses, blood pressure, feeding, and glucose regulation.
Natural Ways to Support Melatonin Production
Lifestyle choices play a key role in naturally enhancing melatonin production. Diets rich in tryptophan, magnesium, and B vitamins support the body’s ability to synthesize melatonin. For example, one study involved feeding walnuts—known to contain melatonin— to rats. The study showed elevated blood melatonin levels in the rats, suggesting walnuts may be a beneficial dietary source. Other melatonin-boosting foods include tart cherries, dairy products, almonds and pistachios, and fruits such as kiwi. Incorporating these into your evening meals or snacks may help support restful sleep.
Melatonin as a Supplement
Please note that melatonin supplements are not sleeping pills. Oral melatonin supplements support the human body’s natural circadian rhythms and promote healthy sleep. When taken an hour before bedtime, melatonin supports the natural rise in melatonin that typically occurs before sleep.
Melatonin Fluctuation with Age
As we age, melatonin production tends to decline, and circadian rhythms—the body’s internal clock regulating sleep, mood, and metabolism—can become disrupted. This often leads to fragmented sleep, early awakenings, and reduced sleep efficiency.
Research from Harvard Medical School found that older adults who received melatonin supplementation experienced improved sleep efficiency compared to those given a placebo. These findings suggest melatonin may be a promising sleep aid for aging populations, though further studies are needed to refine dosing and long-term use.
Rest Easy with Melatonin
Melatonin is not a sleeping cure, but it plays a vital role in helping your body regulate sleep naturally. When your body produces melatonin effectively, you’re more likely to experience restful, restorative sleep. And quality sleep is foundational to your overall health, supporting everything from immune function and mood to cognitive performance and energy levels.
Whether through lifestyle choices, diet, or supplementation, supporting healthy melatonin production can help you sleep better and feel better.
