a Phosphorylase kinase values in curcumin- and vehicle-treated groups [reprinted with permission from Heng et al., (2000), British Journal of Dermatology, John Wiley and Sons (51)]. b Effects of curcumin on serum MDA and lipoproteins in human volunteers [reprinted from Soni and Kuttan, 1992, with permission of Executive Editor, Indian Journal of Physiology and Pharmacology (57)]. HDL, high density lipoprotein; MDA, malondialdehyde