Joseph Y ChangDr. Joseph Y. Chang, Ph.D., better known at Nu Skin as just "Joe," was appointed chief scientific officer and executive vice president of product development in 2006. With more than 35 years of experience in the pharmaceutical and dietary supplement ndustries, Joe has comprehensive knowledge of both sectors. Before the acquisition of Pharmanex by Nu Skin Enterprises in 1998, he served as the vice president of clinical studies and pharmacology at Pharmanex.Before Pharmanex, Joe served as president and chief scientific officer of Osteoarthritis Sciences, Inc. from 1991 to 1994 and Binary Therapeutics, Inc. from 1994 to 1997. He has also held various research management positions at Wyeth-Ayerst, Rhone Poulenc Rorer, and other biotechnology companies, where he researched natural products for arthritis and immunosuppressive treatment. He received a B.S. degree from Portsmouth University and a Ph.D. from the University of London. Read More Read Less