Panax ginseng--a non-organ-specific cancer preventive?

There appears to be good evidence that ginseng can prevent cancer. Please note that there is no solid evidence that ginseng can treat cancer that already exists. I pulled this abstract from Lancet Oncol, a respected journal. A google scholar search of "ginseng cancer" (with no quotes) yields quite a few hits on the topic and the conclusions seem to be widely accepted in the scientific community. See also and this, too.

Lancet Oncol. 2001 Jan;2(1):49-55.

Panax ginseng--a non-organ-specific cancer preventive?

Yun TK.

Laboratory of Experimental Pathology, Korea Cancer Center Hospital, Seoul. tkyun@nuri.net

For the past 50 years, the main weapons in the war against cancer have been early detection and surgical removal, radiotherapy, chemotherapy, and attempts to develop gene therapy. However, the results so far are less than ideal. One strategy now is to switch from therapeutic approaches to prevention of cancer by improving lifestyle and by identifying effective natural products as chemopreventive agents. One promising candidate with cancer-preventive effects that are not specific to any organ is Panax ginseng C A Meyer, a herb with a long medicinal history. Its protective influence against cancer has been shown by extensive preclinical and epidemiological studies, but these effects need to be carefully investigated by scientific clinical trials focusing on the major cancer killers stomach, lung, liver, and colorectal cancer.