Donnie Yance has devoted his life to developing a unique approach to health and healing that elegantly combines his passion for the latest scientific research with the wisdom of ancient healing traditions.
In his early 30s while working at his first clinic, Donnie met the patient that forever changed him and called him to a life of service, compassion, and tireless advocacy for his clients.
Her name was Sinclair, but everyone at the clinic came to call her “St. Clair” because of the strength, beauty, and kindness that emanated from her. Sinclair faced serious health challenges and sought support to help her through treatments that, while trying to give her life, also took pieces of that life away.
Pouring over research, Donnie learned everything he could, determined to find new therapies to support her. He gave her what he continues to give his clients to this day - his heart, his soul, and his mind. At Sinclair’s memorial, her parents gave Donnie a ring she created for him as one of her last acts.
It was a pivotal moment as Donnie glimpsed the meaningful relationship between practitioner and patient, the privilege of understanding how to leverage the innate intelligence of the plant kingdom for human wellbeing. He put the ring on his finger and wears it to this day, a symbol and reminder of his life’s purpose - to help people with chronic health challenges seeking a better quality of life.
Since that first patient, Donnie has devoted his life to developing a unique approach to health and healing through his singular ability to synthesize traditional medical wisdom from every major civilization with breakthrough scientific research and his deep appreciation for the inextricable link between plants, humans, and the capacity to heal.
Internationally recognized for his comprehensive knowledge and understanding of the healing properties of plants and nutrition, Donnie is a clinical master herbalist, certified nutritionist, and an avid, gifted researcher. A pioneer in modern herbalism and a keeper of herbal traditions past, Donnie’s breadth of knowledge and approach to healing has had a profound impact on meshing conventional and alternative medicine. These gifts and his unwavering commitment to quality are what brought Natura into being.
Donnie is the Founder and President of the Mederi Foundation, a not-for-profit organization for professional education and clinical research in integrative medicine, which is where he developed Mederi Care® / the the Eclectic Triphasic™ Medical System (ETMS), a diagnostic and therapeutic methodology for patient care, with the goal of significantly improving patient quality of life and longevity.
Teacher, Mentor, Author
For more than a decade, Yance has been widely respected as a teacher and mentor in the field of natural medicine and integrative care, lecturing throughout the United States at major conferences and hospitals for both patients and healthcare practitioners.
Donnie is the author of "Adaptogens in Medical Herbalism: Elite Herbs and Natural Compounds for Mastering Stress, Aging and Chronic Disease.”
To learn more about Donnie’s insights and philosophies, visit his blog,