Low Dog, MD



Tieraona Low Dog, MD’s exploration of the natural world began more than 35 years ago as she studied midwifery, herbalism, massage therapy, and martial arts before earning her medical degree from the University of New Mexico School of Medicine. An internationally recognized expert in the fields of integrative medicine, dietary supplements, and women’s health, Dr. Low Dog was appointed by President Bill Clinton to the White House Commission on Complementary and Alternative Medicine Policy, served as the elected Chair of the US Pharmacopeia Dietary Supplements and Botanicals Expert Information Panel, and was appointed to the Scientific Advisory Council for the National Center for Complementary and Alternative Medicine.
She has been an invited speaker to more than 550 scientific/medical conferences, published 40 peer-reviewed articles, written 22 chapters for medical textbooks, and has authored five books, including three National Geographic books, Fortify Your Life, Healthy at Home, and Life is Your Best Medicine. She has appeared on CNN, ABC’s 20/20, and is a frequent guest on the Dr. Oz show and NPR’s The People’s Pharmacy.

Paul Bergner has studied and practiced herbalism since 1973, with formal training in naturopathy, clinical nutrition, Traditional Chinese Medicine, Ayurveda, flower essences, yoga therapy, and bodywork, undergraduate studies in pre-medicine and psychology, and 50 semester hours of doctoral-level medical studies at the National College of Naturopathic Medicine. He has published the journal Medical Herbalism since 1989, and he has written seven books on medical herbalism, nutrition, Chinese medicine, ethnobotany, and naturopathic medicine. He has also edited periodicals on clinical nutrition and naturopathic medicine.

Paul has taught herbalism and clinical nutrition since 1989. He mentored more than 230 students through clinical residencies at the Rocky Mountain Center for Botanical Studies and the North American Institute of Medical Herbalism in Boulder between 1996 and 2012. He is currently on the clinical faculty of the School of Traditional Western Herbalism in Portland, OR and the Colorado School of Clinical Herbalism in Boulder. He has also taught nutrition academically at both the undergraduate and master’s levels. He lectures on the topics of herbalism and clinical nutrition nationally and internationally.


Anna Mezger-Sieg Bradley has dedicated her life to connecting herself and others to nature through the art of nature awareness. She is a clinical herbalist, ethnobotanist, musician, indigenous skills enthusiast, and mentor. She began her formal training in herbalism in 2010 and began studying with the Columbines School of Botanical Studies in 2011 where she is now the acting Clinical Director. 

She has a particular passion for herbal first aid and has acted as camp healer/first aid at many adult and children’s outdoor programs. Anna has been a member of the herbalist and triage team with Occupy Medical for several years. 

In 2009, she co-founded a nonprofit called Whole Earth Nature School that connects children in the Eugene area to nature. 

Through her education with Tom Brown Jr.’s Tracker School she has a specific interest in uses of plants other than food and medicine such has basketry, cordage, fire making, and enjoys bringing other plant uses into her workshops and plant walks. 

Anna has led and taught plant walks and herbal workshops in the Eugene area for over 10 years including Mount Pisgah’s Wildflower Festival.


Guisepi Spadafora


Guisepi Spadafora has been traveling the country for more than a decade with Edna Lu the Free Tea Bus offering free tea as a community-building project. He finds joy in resource reclamation, tinkering, empowering people with real skills, and creating a more sharing world through gifting. 


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