South China Morning Post, 5 February 2016
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.
A recent examination by the State Food and Drug Administration showed that products derived from the fungus, such as powders and tablets, contain excessive arsenic, Chinanews.com reports.
The national standard limit for the toxic chemical is 1 milligram per kilogram, but the level found in the supplements ranged from 4.4-9.9mg/kg.
Consuming the products over a long period increased the risk of the element, a common poison, accumulating in the body, the authority said.
Cordyceps are the fruiting bodies formed after fungus parasitizes the larvae of ghost moths found in mountainous regions of Tibet and Nepal.
They make expensive gifts, often given to old people, and are believed to strengthen a person’s immunity system and restrain the development of cancer cells.