Trametes versicolor polysaccharide extracts show impressive benefits in cases of lung cancer. In a 1993 study on patients with stage I-III non-small cell lung cancer treated with radiotherapy and PSK, PSK extended 5-yr survival 2-4x for all stages with maximum benefit in patients over the age of 70 and for tumours less than 5cm in diameter. In a 2003 study with non-small-cell lung cancer patients post-radiotherapy, those patients who received 3g PSK daily in 2 week cycles (2 weeks on, 2 weeks off) were almost 4 times more likely to be alive after 5 years than those without PSK (27% vs. 7%), with stage III patients who received PSK having a better prognosis than stage I/II patients who did not1. Grifola frondosa polysaccharide extract/fruiting body combination has also been reported to produce improvement in 65% of lung cancer patients.2. 1. Coriolus versicolor polysaccharide peptide slows progression of advanced non-small cell lung cancer. Tsang K.W, Lam C.L, Yan C, Mak J.C, Ooi G.C, Ho J.C, Lam B, Man R, Sham J.S, Lam W.K. Respir Med. 2003;97(6):618-24
2. Maitake D-fraction: healing and preventive potential for cancer.
Nanba H. J Orthomolecular Med. 1997;12:43-49