Reishi extract has been used in Traditional Chinese Medicine to treat arthritis and other forms of inflammation for over 2,000 years. Also commonly known by its Latin name as “Ganoderma,” or Chinese “Ling Zhi,” Reishi is by far the most searched medicinal mushroom on the Internet with over 200,000 searches per month. And although it may not be the panacea (”cure-all”) that some hold it to be, the fact that modern research confirms it as an inflammation modulator may help explain why it has long been heralded as such in the Orient.
In fact, Chinese medical practitioners have been prescribing Reishi extract for ages in cases of arthritis, bronchitis and other conditions involving any type of inflammation. Modern research in Asia as well as in America and Europe confirm the validity of these uses. Out of 19 papers used for this article, 17 reported positive results in the use or Reishi extract for arthritis. Only two were studies were inconclusive, both of which were conducted by the same research team. (1,2)
Regarding anti-inflammatory properties in general, a study out of India (2003) demonstrated that Reishi decreased inflammation in cases of acute or chronic edema by 56% and 60% respectively. (3) An earlier American study (1993) had already shown that, water extracts of G. pentaphyllum and G. lucidum [Reishi] were found to possess significant anti-inflammatory activity. (4) In the references are seven additional papers listed which all conclude that Reishi (Ganoderma lucidum) possesses potent anti-inflammatory qualities. (5,6,7,8,9,10,11)
Other research has been conducted on Reishi extract that relate specifically to arthritis. In 2006, Kenneth Blum et al. published findings in support of both the effectiveness and safety of using Reishi extract for “joint health,” providing “clinical evidence” to back up their claim. (12)
Also that same year, a Chinese study by Xi Bao et al. came to the conclusion that Reishi plus another medicinal herbal remedy commonly used in China seemed to have a “beneficial immunomodulatory effect” on arthritis. (13)
The mechanism through which Reishi achieves this beneficial effect on arthritis was suggested in a study the following year, 2007, by Ho et al., which states that GL-PP [Ganoderma lucidum polysaccharide peptide] significantly inhibited the proliferation of RASF [Rheumatoid Arthritis Synovial Fibroblasts] (14)
A number of other studies also report positive findings for using Reishi extract with arthritis (15,16,17) One of them even reports favorable results in comparing Reishi with prednisone, and without the side effects. (18) Furthermore, a different study found that supplementation with Reishi extract actually helped to balance the side effects of prednisolone experienced by some patients, including proteinuria and cell toxicity. (19) (Prednisone breaks down in the body to form prednisolone, which is the active compound.)
In conclusion, the majority of research on the use of Reishi extract for inflammation or arthritis appears to support its effectiveness. Please remember that it is very important to always consult a licensed medical doctor before using any herb for medicinal purposes.
Name clarification: The Japanese name Reishi includes many closely related species. By far the most prevalent is Ganoderma lucidum (Common Reishi or Red Reishi), a species rare in the U.S. but common in South East Asia. The English common name for Ganoderma lucidum is Varnished Conk. In China, its known as Ling Zhi.
Other species frequently referred to as Reishi include: Ganoderma tsugae (Hemlock Reishi, common on Hemlocks in Eastern U.S.), Ganoderma sinense (”Black Reishi), Ganoderma resinaceum (Red Reishi), Ganoderma japonicum (Purple Reishi) and Ganoderma neo-japonicum (no common name or simply Reishi).
