a fungus that has been used for over 2000 years in China as a treatment for a variety of conditions including cancer. Cordyceps acts an immune stimulator by raising cancer and virus fighting T Cells and Natural Killer Cells.  It prolongs the life of white blood cells and improves resolution of infections. It has demonstrated anti-tumor properties and also protects the kidneys from chemotherapy side effects. It is one of the most widely used tonics in anti-cancer formulas in Chinese Medicine.

Cordyceps sinenosis demonstrates anti-inflammatory properties.  Inflammation is a factor common to many diseases including cancer.  Supporting the management of inflammation modulates our immune system. In particular, CS has been shown to suppress the production of COX-2, NFkB and TNFa.

http://articles.mercola.com/sites/articles/archive/2014/03/15/mushrooms-cancer-treatment.aspx

Cordyceps, also called caterpillar fungus or Tochukasu, has anti-tumor properties as well. This parasitic mushroom is unique because, in the wild, it grows out of an insect host instead of a plant host. It has long been used within both traditional Chinese and Tibetan medicine. Scientists at The University of Nottingham have been studying cordycepin, one of the active medicinal compounds found in these fungi, as a potential cancer drug.9