http://www.ncbi.nlm.nih.gov/pubmed/9336591
Craig WJ.
Phytochemicals: guardians of our health.
J Am Diet Assoc. 1997 Oct;97(10 Suppl 2):S199-204. Review.
PMID: 9336591
Abstract
"The foods and herbs with the highest anticancer activity include
garlic, soybeans, cabbage, ginger, licorice, and the umbelliferous
vegetables."

http://www.ncbi.nlm.nih.gov/pubmed/9250104
Fuhrman B, Buch S, Vaya J, Belinky PA, Coleman R, Hayek T, Aviram M.
Licorice extract and its major polyphenol glabridin protect low-
density lipoprotein against lipid peroxidation: in vitro and ex vivo
studies in humans and in atherosclerotic apolipoprotein E-deficient
mice.
Am J Clin Nutr. 1997 Aug;66(2):267-75.
PMID: 9250104
Abstract
"Dietary supplementation of each E zero mouse with licorice (200
micrograms/d) or pure glabridin (20 micrograms/d) for 6 wk resulted in
a substantial reduction in the susceptibility of their LDL to
oxidation"
--
John H. Gohde