Is Cordyceps good for arthritis?

Online Answer
The fungus — called Cordyceps militaris — colonizes the caterpillars of Haepialus moths, as well as other insects. Traditionally, and according to some research, C. militaris can bring many health benefits, including by acting as an anti-inflammatory.
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What Tibetans call the worm is actually not a worm but a fungus -- Cordyceps sinensis, to be precise -- that feeds on caterpillar larvae. Or, to give the fungus its more poetic name, "winter worm, summer grass," because its appearance changes from one to the other with the seasons.
The genus has a worldwide distribution and most of the approximately 600 species that have been described are from Asia (notably Nepal, China, Japan, Bhutan, Korea, Vietnam, and Thailand). Cordyceps species are particularly abundant and diverse in humid temperate and tropical forests..
Cordyceps Sinensis (Cordy), Ganoderma lucidum (Reishi) and Agaricus Blazi Murill (ABM) are fungi widely used in traditional Chinese medicine.
Cordyceps, or caterpillar fungus, one of the most sought-after and expensive ingredients in traditional Chinese medicine, has been deemed a danger to human health by China's main food and drug regulator, mainland media report.
6.6 Cultivation of C. Cordyceps is a very rare mushroom, however, and its natural variety is quite expensive..