Okada, K., Wangpoengtrakul, C., Tanaka, T., Toyokuni, S., Uchida, K., & Osawa, T. (2001). Curcumin and Especially Tetrahydrocurcumin Ameliorate Oxidative Stress-Induced Renal Injury in Mice. The Journal of Nutrition, 131(8), 2090–2095. doi:10.1093/jn/131.8.2090