I'll take a stab at it if you guys don't mind...
"Growth inhibitors against tumor cells in Cordyceps sinensis other than cordycepin and polysaccharides."
Cordyceps sinensis is a parasitic fungus that has been used as a Chinese medicine for a long time. In the present study, inhibitory effects of crude methanolic extracts of C. sinensis fruiting bodies on various tumor cell lines [K562, Vero, Wish, Calu-1, and Raji tumor cell lines] were demonstrated... The polarities of these two fractions indicated that they were different from that of cordycepin. Therefore, it is suggested that tumor cell growth inhibitors, other than cordycepin and polysaccharides, are contained in C. sinensis.http://www.ncbi.nlm.nih.gov/sites/entrez?db=pubmed&uid=7994596&cmd=showdetailview&indexed=googlehttp://www.worldscinetarchives.com/cgi-bin/details.cgi?id=pii:S0192415X96000165&type=html
These two research articles talk about it's effects on:
Part I: "These studies show the main activities of the fungus in oxygen-free radical scavenging, antisenescence, endocrine, hypolipidemic, antiatherosclerotic, and sexual function-restorative activities."http://www.ncbi.nlm.nih.gov/pubmed/9764768?ordinalpos=1&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVAbstractPlusDrugs1
Part II: "... concludes the series with a review of C. sinensis in preclinical in vitro and in vivo studies, and open-label and double-blinded clinical trials on the respiratory, renal, hepatic, cardiovascular, immunologic, and nervous systems, and its effects on cancer, glucose metabolism, inflammatory conditions, and toxicological studies."http://www.ncbi.nlm.nih.gov/pubmed/9884180?ordinalpos=1&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVAbstractPlusDrugs1
The problem with these two articles, however, is their lack of availability as far as the full article free (though you're probably able to buy them), but if you're willing to do a search of them i'm sure it'll come up somewhere
As far as the energy boost and the athletic endurance (objectively), research shows otherwise:
"It is purported that supplementation with Cordyceps Sinensis (CordyMax Cs-4) will improve oxidative capacity and endurance performance. The intent of this investigation was to examine the effects of CordyMax Cs-4 supplementation on VO<(2peak,) ventilatory threshold, and endurance performance in endurance-trained cyclists. Twenty-two male cyclists participated in 5 weeks of supplementation with CordyMax Cs-4 tablets (3 g/d)... Time trial measurements did not differ between groups, nor did they change in response to supplementation. It is concluded that 5 weeks of CordyMax Cs-4 supplementation has no effect on aerobic capacity or endurance exercise performance in endurance-trained male cyclists."http://www.ncbi.nlm.nih.gov/pubmed/15118196?ordinalpos=1&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVAbstractPlusDrugs1
Regardless of these research, the practice of alternative remedies without research, and regardless of their findings, I'm sure happens in areas were the public is more oriented towards traditional remedies rather than the western modern techniques, it's a matter of preference. A little of both would be better in my opinion.
I wouldn't trust a method just because its practice is widespread, look at our past in the medical sector: Drilling holes in heads to exorcise the demons, leeching, and even some of the modern western methods are lacking any wisdom other than how to get into your pockets. Shrugs that's my opinion.
Still, an excellent article, kudos. Cordyceps looks pretty interesting and i might give it a try later from New Chapters.