Scientific Backing

Your health is central to your happiness and wellbeing. Of course, there are many different paths to a healthful, harmonious and fulfilling life. Our mission is to help make it easy for you to make the best choices.

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The supplement recommendations the Weil Vitamin Advisor makes are rooted in decades of scientific study and research by Andrew Weil, M.D., Tieraona Low Dog, M.D., and the Weil Lifestyle Science Advisory Team. That research meets the following criteria:


Contemporary, principally based on studies within the last 10 years utilizing modern research methodology.
Validated by peers in respected scientific journals.
Continually reviewed by Drs. Weil and Low Dog and the Science Advisory Team, who adjust the types and amounts of ingredients in our supplements in order to remain current with the research.

Dr. Weil is perhaps the most widely known and influential nutrition writer in the U.S. His 40 years of intense study into the relationship between nutrition and human health led him to write seminal books detailing how and why to optimize health via appropriate nutrition, emphasizing a whole-food diet and targeted supplementation. These include:

  • Eating Well for Optimum Health: the Essential guide to Bringing Health and Pleasure Back to Eating
  • The Healthy Kitchen: Recipes for a Better Body, Life, and Spirit (with Rosie Daly)
  • True Food: Seasonal, Sustainable, Simple, Pure (with Sam Fox and Michael Stebner)

Dr. Low Dog is considered by many to be one of the leading experts in the field of herbal medicine and dietary supplements in the United States. She has been an invited speaker at more than 500 scientific conferences and has published extensively on the safe and effective use of dietary supplements Dr. Low Dog chaired the United States Pharmacopoeia Dietary Supplements and Botanicals Expert Information Committee from 2000-2010 and now serves as chair of the Dietary Supplements and Botanicals sub-committee on safety, where she helps oversee the evaluation of the safety of commonly used dietary supplements. Dr. Low Dog is the author of National Geographic's Healthy at Home and co-author of the National Geographic's Medicinal Guide to Herbs.

In addition, Drs. Weil and Low Dog are organizers and frequent speakers at Nutrition and Health: State of the Science and Clinical Applications, the premier nutrition conference for health professionals in the U.S. Presented by Arizona Center for Integrative Medicine at the University of Arizona College of Medicine, the annual conference assembles internationally-recognized researchers, clinicians, educator and chefs, all of whose work focuses on the interface between nutrition and healthful living.

"Nutrition is a dynamic field," said Dr. Weil. "The scientific consensus regarding the best forms, proportions and quantities of micronutrients delivered via supplementation is always changing."

"Fortunately, we both have a passion for the subject matter, and through our participation in the Nutrition and Health Conference, we've formed close alliances with leading nutrition researchers," added Dr. Low Dog. "There is art, as well as science, in interpreting the data, and I'm confident that the recommendations we provide via the Weil Vitamin Advisor are based on the best, most solid scientific evidence currently available."

Now is the time to take control of your well being. Start your journey to optimal health with the Weil Vitamin Advisor online personal evaluation Take our Start your evaluation.