Understanding the intricate relationship between melatonin, sleep hormones, and ankylosing spondylitis (AS) requires a deep dive into how these elements interact within the human body. Ankylosing spondylitis is a type of inflammatory arthritis that primarily affects the spine and sacroiliac joints, leading to chronic pain and stiffness. The role of sleep hormones, particularly melatonin, in this condition is an area of growing interest and research.

Melatonin is a hormone produced by the pineal gland in the brain, primarily responsible for regulating sleep-wake cycles. Its secretion is influenced by light exposure; it increases in darkness, promoting sleep, and decreases with light, promoting wakefulness. Beyond its role in sleep regulation, melatonin also possesses anti-inflammatory and antioxidant properties, which are crucial in the context of inflammatory diseases like ankylosing spondylitis.

The Connection Between Melatonin and Sleep

To appreciate how melatonin might impact ankylosing spondylitis, one must first understand its fundamental role in sleep. Melatonin's primary function is to signal the body that it is time to prepare for sleep. This process involves a comp...