Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Lingzhi (Ganoderma lucidum), also known as Reishi, has a long history of use in Traditional Chinese Medicine (TCM) for promoting health, longevity, and improving sleep quality. In TCM, lingzhi is considered to "nourish the heart and calm the spirit," making it a popular remedy for insomnia, restlessness, and anxiety. Historical texts such as the "Shennong Ben Cao Jing" (The Divine Farmer's Materia Medica) describe lingzhi as a "superior herb" that can help with sleeplessness and mental unrest.

Modern scientific research on lingzhi's effects on insomnia is limited but growing. Some animal studies have suggested that extracts of Ganoderma lucidum may have sedative and anxiolytic effects, potentially modulating neurotransmitters like GABA and serotonin involved in sleep regulation. A small number of preliminary human studies and case reports indicate possible improvements in sleep quality and reduction in fatigue, but these studies are generally low in quality, with small sample sizes and lack of rigorous controls.

Overall, while lingzhi's use for insomnia is primarily justified by tradition, some early scientific findings provide weak support. More robust, well-designed clinical trials are needed to confirm its effectiveness and safety for treating or supporting insomnia in humans.

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