Acupuncture is effective in improving sleep quality by regulating the hypothalamic-pituitary-adrenal (HPA) axis and influencing melatonin secretion, the hormone that controls sleep-wake cycles.
Analogy: Think of your sleep as a computer system. When stress (like too many open programs) builds up, the system slows down. Acupuncture helps “shut down” the unnecessary programs (lower cortisol) and optimizes the system to run smoothly, so you can “reboot” and sleep better.
Mechanism: Acupuncture reduces the activity of the HPA axis, which is responsible for the body’s stress response. This decreases the levels of cortisol, a stress hormone that interferes with sleep. Additionally, acupuncture enhances melatonin levels at night, which helps initiate and maintain sleep.
Research Evidence: A study published by Cao et al. (2019) demonstrated that acupuncture improves sleep quality by normalizing the secretion of melatonin and decreasing nighttime cortisol levels. Another trial by Huang et al. (2018) showed that acupuncture reduced insomnia symptoms significantly after just a few treatments.
