Cordyceps Benefits and
Side Effects
Cordyceps [Caterpillar fungus, Deer fungus parasite, Chongcao]
Cordyceps is a genus of ascomycete fungi and some of its members including Cordyceps mycelium are
commonly used in herbal medicine. The popular species in commercial products are Cordyceps sinensis,
Cordyceps ophioglossoides, Cordyceps capita, and Cordyceps. militaris. Cordyceps militaris is a traditional
herbal ingredient frequently used for tonic and medicinal purposes in eastern Asia, while, Cordyceps sinensis
(dong chong xia cao; 冬蟲夏草) has been suggested to possess anti-tumor, immunostimulant and antioxidant
activities.
The chemical constituents for most species include cordycepin (3'-de-oxyadenosine) and its derivatives,
ergosterol, polysaccharides, a glycoprotein and peptides containing alpha-aminoisobutyric acid. [11] Their
benefits are suggested to include anti-tumour, anti-metastatic, immunomodulatory, antioxidant, anti-
inflammatory, insecticidal, antimicrobial, hypolipidaemic, hypoglycaemic, anti-ageing, neuroprotective and
renoprotective effects. Polysaccharide accounts for the anti-inflammatory, antioxidant, anti-tumour, anti-
metastatic, immunomodulatory, hypoglycaemic, steroidogenic and hypolipidaemic effects. Cordycepin
contributes to the anti-tumour, insecticidal and antibacterial activity. Ergosterol exhibits anti-tumour and
immunomodulatory activity. [11]
More about Cordyceps sinensis
Cordyceps sinensis, a well-known and valued traditional Chinese medicine, is also called DongChongXiaCao
(winter worm summer grass) in Chinese. In herbal medicient, it is commonly used to replenish the kidney and
soothe the lung and it is belived to benefit fatigue, night sweating, hyposexualities, hyperglycemia,
hyperlipidemia, asthemia after severe illness, respiratory disease, renal dysfunction and renal failure,
arrhythmias and other heart disease, and liver disease. As the rarity and upstanding curative effects of natural
Cordyceps, several mycelial strains have been isolated from natural Cordyceps and manufactured in large
quantities by fermentation technology, and they are commonly sold as health food products in Asia. [8]
HEALTH BENEFITS OF CORDYCEPS
Cordyceps may promote liver health.
Researchers from Shanghai University of Traditional Chinese Medicine proposed the use of Cordyceps sinensis
on liver fibrosis. In a study, they induced liver fibrosis in rats with dimethylnitrosamine and then they treated the
rats with Cordyceps sinensis. They found that the content of metalloproteinases-2 in Cordyceps sinensis-treated
group was significantly higher than that in the untreated group. Thus, cordyceps sinensis promoted collagen
degradation. [1]
Cordyceps may have benefits in diabetes.
Researchers from University of Macau, China, isolated a polysaccharide of molecular weight approximately
210kDa was isolated from cultured Cordyceps mycelia. This isolated polysaccharides, CSP-1, has a strong
antidant activity and a hypoglycemic effect on normal and alloxan-diabetic mice and streptozotocin (STZ)-diabetic
rats. When administered at a dose of higher than 200mg/kg body wt. daily for 7 days, CSP-1 produced a
significant drop in blood glucose level in both STZ-induced diabetic rats and alloxan-induced diabetic mice. [3]
Researchers from China Agricultural University, Beijing, also noticed the blood glucose lowering effects of a
polysaccharide extracted from the fruting bodies and mycelia of Cordyceps militaris in a study of rats. The
hypoglycemic effect of this polysaccharide-enriched Cordyceps militaris extract was dose-dependent. [7]
Cordyceps have antioxidant activities. [5, 37-40]
Researchers from Chia Nan University of Pharmacy and Science, Taiwan, demonstrated the protective effects of
cultured Cordyceps militaris and natural Cordyceps sinensis against oxidative damage of biomolecules in a vitro
study. They both have free radical scavenging abilities. [5]
Cordyceps may have benefits in cancers.
The aqueous extract of Cordyceps sinensis (Cs), one of the traditional Chinese medicines, has been
demonstrated to benefit a wide range of disorders in either animal or test-tube studies. [9-31] Here are some
most recent animal or in vitro studies suggesting its benefits in cancers.
Korean researchers reported cytotoxic effects of cultivated fruiting bodies of Cordyceps militaris extracts against
the proliferation of the human premyelocytic leukemia cell HL-60 via the activation of caspase-3. [6]
Researchers from Nanjing University shouls that a polysaccharide extracted from a cultivated Cordyceps
sinensis fungus significantly enhanced superoxide dismutase activity of liver, brain and serum as well as
glutathione peroxidase activity of liver and brain in tumor-bearing mice. It also inhibited H22 tumor growth in the
mice.
Cordyceps sinensis mycelium was found to induce MA-10 mouse Leydig tumor cell death. Researchers from
Taiwan found that Cordyceps sinensis induced MA-10 cell apoptosis by activating caspase-8-dependent and
caspase-9-independent pathways and downregulating NF-?B protein expression. [9]
Hong Kong researchers demonstrated that an ethanol extract of cultivated mycelium of a Cordyceps sinensis
fungal mycelium has strong anti-tumor activity on four cancer cell lines MCF-7 breast cancer, B16 mouse
melanoma, HL-60 human premyelocytic leukemia and HepG2 human hepatocellular carcinoma. In an animal
test, the EtOAc extract showed significant inhibiting effect on B16-induced melanoma in C57BL/6 mice, causing
about 60% decrease of tumor size over 27 days. In contrast, this extract had much lower cytotoxicity against
normal mouse bone marrow cells. Researchers reported that it contained mainly carbohydrates, adenosine,
ergosterol and trace amount of cordycepin. [10]
Cordyceps may help body defense, against infections and inflammation. Cordyceps may modulate immunity. [2,
4, 32, 42-47]
Cordyceps sinensis is believed to be an immunomodulator.Hong Kong researchers demonstrated that a
cultivated strain of Cordyceps sinensis induced the production of interleukin(IL)-1beta, IL-6, IL-10 and tumor
necrosis factor alphaalpha from PBMC, augmented surface expression of CD25 on lymphocytes in a vitro study.
[2] While, researchers from Zhejiang University, China, desmonstrated increased ovalbumin-specific IgG, IgG1
and IgG2b serum levels after treating the mice with edible mycelia of Cordyceps sinensis. [4]
A rat study has shown that a Cordyceps sinensis mycelium extract protected mice from group A streptococcal
infection. It increased IL-12 and IFN-gamma expression and macrophage phagocytic activities. [32]
Cordyceps show benefit in diabetes in a study of animals.
Korean researchers showed a water-extract of Cordyceps militaris ameliorated insulin resistance by enhancing
glucose utilization in skeletal muscles of rats. [33]
Cordyceps show benefit in memory deficits in a test-tube study.
The extract of Cordyceps ophioglossoides protected the Abeta-induced neuronal cell death and memory loss
through free radical scavenging activity. [34]
Cordyceps alter testosterone levels in mice.
Researchers from Taiwan noticed the stimulating effects of Cordyceps sinensis extracts on the secretion of
testosterone in mice; this effect is in dose- and time-dependent relationships. They are hoping this effect may
offer benefits to those with reproductive problems. [35]
Cordyceps show cholesterol-lowering effects in animal studies. [36,40]
In a study, researchers fed mice with cholesterol-enriched diet. They found that the serum total cholesterol (TC)
of all mice groups administered Cordyceps sinensis extracts with the cholesterol-enriched diet decreased more
than in the control group. [36]
Cordyceps show liver protection in animal studies.
Cordyceps sinensis may be able to adjust the T lymphocyte subsets level and to treat hepatic fibrosis in patients
with chronic hepatitis. In the study, the researchers supplied cordyceps sinensis to 25 patients suffered from
chronic hepatitis for three months. They found CD4 and CD4/CD8 ratio increased significantly(P < 0.05), while
HA and PC III decreased significantly(P < 0.05) compared with the control. [L1]
In another study of rats, researchers from Korea demonstrated four weeks of administration of extracellular
biopolymers from mycelial liquid culture of Cordyceps militaris has a beneficial effect in rats with liver fibrosis. [L2]
Cordyceps show cardiobascular protection in animal studies.
Extracts of the fruiting bodies of cultured Cordyceps sinensis has been shown to exert beneficial effects on the
formation of the atherosclerotic lesion induced by oxidative stress with few side effects in a study of mice. In the
study, researchers fed mice with an atherogenic diet and treated with the extracts for 12 weeks. Mice fed the
atherogenic diet showed marked increases in serum lipid and lipid peroxide levels and also aortic cholesterol
levels, particularly cholesteryl ester level, a major lipid constituent in atherosclerotic lesions. According to the
authors, the extracts significantly suppressed the increased serum lipid peroxide level but not other lipid levels in
a dose-dependent manner. WECS also suppressed the increased aortic cholesteryl ester level in a dose-
dependent manner. [C1]
Researchers isolated a macromolecule from Cordyceps sinensis and they found this molecule has blood
pressure lowering and vaso-relaxing effects. The researchers explained that the vasorelaxation was mediated by
the endothelium possibly by stimulating the release of the nitric oxide and endothelium-derived hyperpolarizing
factor. [C2]
SIDE EFFECTS OF CORDYCEPS
The side effects of Cordyceps sinensis are limited for recommended dosages. [48]
THIS ARTICLE IS FOR YOUR REFERENCE ONLY. STUDY RESULTS DEPEND ON EXPERIMENTAL DESIGNS, EXTRACT
QUALITIES AND THE TYPES OF ANIMAL USED. IF YOU HAVE ANY QUESTIONS, YOU SHOULD CONSULT WITH YOUR DOCTOR
IMMEDIATELY. ALL RIGHTS RESERVED ZHION 2009.
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