Circadian biology

Melatonin is far more than a sleep hormone. It plays a central role in circadian rhythm, mitochondrial health, immune balance, and hormone regulation - particularly during perimenopause and menopause. This melatonin and circadian rhythm guide briefly explains how sunlight, modern lifestyle factors, and hormonal changes influence melatonin, and how to support melatonin production and healthy [...]

If melatonin is your body’s master timing molecule / body clock, then light is the hand that winds it. Understanding the natural melatonin cycle is key to manage your entire hormonal network during the night and day. In the first article, we explored how melatonin is far more than a “sleep hormone.” It’s a master molecule, [...]

For years, melatonin has been called the sleep hormone. We’ve been told it’s released by the pineal gland at night to help us drift off to sleep. But that’s only a tiny part of the story. In truth, melatonin is a 24-hour hormone — made mostly during the day, powered by light, and essential for hormone balance [...]