To access your past purchases, be sure to log in with the same email address you used on our old website. If you use a different email through our new website, your previous order history will not be available.
Don't know your old email address? Contact us with your full name and we'll help you get it sorted!
You can access past video purchases on your Vimeo account until March 1. To transfer past orders to your new account, email a screenshot of your Vimeo purchases to our Registration Office before that date. Transfers may take some time.
To access your past purchases, be sure to log in with the same email address you used on our old website. If you use a different email through our new website, your previous order history will not be available.
Don't know your old email address? Contact us with your full name and we'll help you get it sorted!
You can access past video purchases on your Vimeo account until March 1. To transfer past orders to your new account, email a screenshot of your Vimeo purchases to our Registration Office before that date. Transfers may take some time.
Donnie Yance,CN, RH (AHG), is a Clinical Master Herbalist and Certified Nutritionist renowned for his extraordinary knowledge of the healing properties of plants and nutrition, and for his distinguished ability to integrate this wisdom with modern scientific disciplines. His work is informed by a deep understanding of epigenetics, laboratory medicine, oncologic pathology, and molecular oncology—allowing him to bridge traditional botanical medicine with contemporary biomedical science in a unified clinical framework.
A professional member of the American Herbalists Guild and the National Association of Nutrition Professionals, Donnie lectures nationally and internationally on a wide range of health topics, including botanical medicine, clinical nutrition, whole-systems healing, chronic and complex illness, and integrative oncology. He is the Founder of the Mederi Center, a nonprofit organization dedicated to patient care, professional education, and clinical research in unitive medicine and integrative oncology. He is also the Founder, President, and Formulator of Natura Health Products, a professional line of botanical and nutritional formulations.
Donnie maintains his clinical practice at the Mederi Center in Ashland, Oregon, where he sees clients both in person and via telemedicine, applying his integrative care model, Mederi Care—a whole-systems approach he developed over more than thirty years of clinical experience. As a mentor, teacher, author, and healer, Donnie’s work has influenced thousands of lives and is taught to healthcare practitioners worldwide through the Mederi Academy, an online professional training program focused on whole-systems medicine, integrative oncology principles, clinical applications, and therapeutics.
Donnie is the author of Herbal Medicine, Healing and Cancer and Adaptogens in Medical Herbalism: Elite Herbs and Natural Compounds for Mastering Stress, Aging, and Chronic Disease. He publishes a weekly blog at donnieyance.com, where he shares insights on healing, research, and the evolving landscape of integrative medicine.
