Nutrition, Lifestyle Medicine, Longevity & Anti-Ageing

As a Nutritionist and Health Educator, I have devoted my life to teaching people how to achieve optimal health and longevity through a healthy plant-based vegetarian diet. A whole food, plant-based diet, rich in fruits, vegetables and other healthy plant foods is powerful medicine in preventing, effectively treating and even reversing many of the diseases we face today. This diet, plus regular exercise, healthy lifestyle habits, and a positive mental attitude can help in achieving optimal health. I believe it is possible for each of us to enjoy total wellness for the body, mind and spirit.

~ Dr. John Westerdahl ~

“…I pray that you may prosper in all things and be in health, just as your soul prospers.”

3 John 2 -- A verse from the Holy Bible (New King James Version)

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Meet the Practitioner

Dr. John Westerdahl, PhD, MA, MPH, RDN, CNS, FLS, FAND, DipACLM

Dr. John Westerdahl is an internationally recognized authority in the fields of food, nutrition and wellness. He is a Registered Dietitian Nutritionist, Certified Nutrition Specialist, ACLM Certified Lifestyle Medicine Professional, Board Certified Anti-Aging Health Practitioner, Master Herbalist, Health Scientist and Health Educator.

543 Country Club Drive,
Suite B333
Simi Valley, CA 93065 US

PHONE: (805) 722-7958

LOMA Linda University
Academy of Nutrition and Dietetics
Dietitions in Integrative and Functional Medicine
Vegetarian Nutrition Academy of Nutrition and Dietetics
Sports, Cardiovascular and Wellness Nutrition
Healthy Aging
Hunger and Environmental Nutrition
American Society for Nutrition
The Nutrition Society
American Nutrition Association
Certified Nutrition Specialist
American Society of Pharmacognosy
True Health Initiative
American College of Lifestyle Medicine
American College of Lifestyle Medicine