Dr. Nikolaos Sitaras, M.D., Ph.D., serves as an Associate Professor of pharmacology at Athens University Medical School. Mr. Sitaras serves as an active member of the European Association of Ethnopharmacology, the Athens Medical Association, the Greek Association of Public Health Education and the Association of Pharmacology. Mr. Sitaras serves as a Director of the medical departments of the Greek branches of pharmaceutical companies Sandoz and Abbott Laboratories and has consulted for Wyeth Consumer Healthcare as well as serving on their European Nutrition Advisory Board. He serves as member of the administrative council of the EOF, the Greek national drug regulating body. He serves as a Member of Nutrition Advisory Board at Herbalife Ltd He served as a Member of Nutrition Advisory Board at Herbalife International of America, Inc. Mr. Sitaras is a practicing physician, author and lecturer, with an interest in digestive health and nutrition. Mr. Sitaras has published extensively on the subject of genetic disorders and nutrition and since 2002, has focused on the effects of dietary supplements in healthy over-50 population. Mr. Sitaras completed his medical studies at Athens University Medical School in 1977, followed by a Ph.D. in pharmacology. He took up a research fellowship in the Department of Nutrition at Harvard University's School of Public Health in the late 1980s.