Osada K, Takahashi M, Hoshina S, Nakamura M, Nakamura S, Sugano M. Tea catechins inhibit cholesterol oxidation accompanying oxidation of low density lipoprotein in vitro. Comp Biochem Physiol Part C Toxicol Pharmacol. 2001;128:153–164. doi: 10.1016/S1532-0456(00)00192-7.
2012. Gauhar, S. L. Hwang, S. S. Jeong et al., “Heat-processed Gynostemma pentaphyllum extract improves obesity in ob/ob mice by activating AMP-activated protein kinase,” Biotechnology Letters, vol. 34, no. 9, pp. 1607–1616, 2012.
Higdon JV, Frei B. Tea catechins and polyphenols: health effects, metabolism, and antioxidant functions. Crit Rev Food Sci Nutr. 2003;43:89–143. doi: 10.1080/10408690390826464.
2012. Müller, A. Gardemann, G. Keilhoff, D. Peter, I. Wiswedel, and L. Schild, “Prevention of free fatty acid-induced lipid accumulation, oxidative stress, and cell death in primary hepatocyte cultures by a Gynostemma pentaphyllum extract,” Phytomedicine, vol. 19, no. 5, pp. 395–401, 2012.
Tsuneki H, Ishizuka M, Terasawa M, Wu JB, Sasaoka T, Kimura I. Effect of green tea on blood glucose levels and serum proteomic patterns in diabetic (db/db) mice and on glucose metabolism in healthy humans. BMC Pharmacol. 2004;4:18–21. doi: 10.1186/1471-2210-4-18.
Singletary, K. Black Pepper: Overview of Health Benefits. Nutrition Today. 2010 January/February: 45(1): 43-47.