||This new study,
conducted at the University of Southern California School of Medicine,
found that the soy constituent genistein soy's suppresses the production
of harmful stress proteins in cells. These stress proteins, which include
heat shock proteins (HSPs) and glucose-regulated proteins (GRPs), normally
help cancer cells survive destruction by the immune system. Dr. Amy S.
Lee, one of the authors of the study which was published in the Journal
of the National Cancer Institute, says that soy products contain high
levels of genistein, a phytoestrogen that is a potent inhibitor of cell
proliferation, and that genistein has been found to inhibit both growth
of carcinogen-induced cancers in rats, and human leukemia cells transplanted
into mice. The authors concluded that "the effectiveness of genistein
as an anti-cancer agent in humans await further preclinical, clinical
and epidemiological testing."