Sandra Goodman PhD is a Co-founder and Editor of Positive Health, a professional magazine devoted to complementary medicine. Trained as a molecular biology scientist in agricultural biotechnology in Canada and the US, Dr Goodman is the author of 4 books, including Nutrition and Cancer: State-of-the-Art, Vitamin C – The Master Nutrient, Germanium: The Health and Life Enhancer and numerous articles. Dr Goodman compiled the Cancer and Nutrition Database for the Bristol Cancer Help Centre in 1993. She may be contacted via sandra@drsgoodman.com www.drsgoodman.com