Jeff Chilton studied ethno-mycology at the University of Washington. Throughout his career his focus has been on the production and research of edible and medicinal mushrooms. He introduced medicinal mushrooms to the US nutritional supplement industry. Jeff Chilton is the author of the highly acclaimed book, The Mushroom Cultivator. His company, Nammex, offers a complete line of Certified Organic mushroom extracts to the US nutritional supplement industry, which are quality based on scientific analysis of the active compounds.