Dr. Ruby Lathon, Ph.D
Dr. Ruby Lathon is a certified holistic nutritionist, wellness coach and an advocate for the life-saving benefits of plant-based nutrition. Dr. Ruby inspires with a powerful story of recovering from thyroid cancer through alternative treatment focused on a whole foods, plant-based diet. Dr. Ruby worked as a researcher and an award winning engineer, and now teaches others how to re-engineer their health and live disease free.
Dr. Lathon earned a Ph.D. and M.S. in Industrial and Systems Engineering, from the University of Alabama in Huntsville, and a B.S. in Computer Science from Oakwood University. Dr. Lathon received her nutrition training at the Washington Institute of Natural Medicine. Dr. Lathon served as Nutrition Policy Manager at the Physicians Committee for Responsible Medicine, where she developed and led a national grassroots campaign to advocate legislation for more healthful, plant-based meal options in the National School Lunch Program.  Dr. Lathon is host of The Veggie Chest, an online, plant-based cooking show and is featured in the new documentary, What the Health. Through her organization, Roadmap to Holistic Health, Dr. Lathon hosts health conferences, workshops and vegan cooking classes and provides customized nutritional consultations and coaching programs.

Dr. James Marcum MD


As one of the few independent health evangelism ministries in North America, Heartwise is honored to present viewers with a message truth, love, and healing to audiences around the world. Our speaker and director, Dr. James L. Marcum, is a board-certified cardiologist practicing with Chattanooga Heart Institute, and has been named by USA Today as one of the most influential physicians in his field. He is the author of The Ultimate Prescription and Medicines That Kill, as well as an in-demand speaker for his role as the director of Heartwise Ministries. Currently, his radio program, Heartwise, airs on more than 400 radio stations across the nation. Dr. Marcum also hosts the health program The Heart of Health Live!, which can be seen on secular and Christian television. He is married to Sonya and has two children, Kelli, and Jake. He enjoys music and outdoor activities.

Dr. James L. Marcum
Author / Speaker / Host

Linda Wade

Linda is certified in Whole Food Plant Based Nutrition through the T.Colin Campbell Center for Nutrition Studies, and certified in Whole Food Plant Based Cooking through the Rouxbe Cooking School.


After earning a Master of Fine Arts degree from Tulane, and later a degree in Interior Design, Linda pursued a career in art and design, all the while exploring her lifelong interest in nutrition by experimenting with vegetarian and vegan dietary patterns. After many decades of studying Macrobiotic diet and philosophy, the emerging weight of scientific evidence supporting a Whole Food Plant Based diet, allowed Linda to refine her own way of eating, and shift focus to studying and preparing to bring to others the science of Whole Food Plant based eating for optimum health and the well-being of the environment.


For the 2017 Healthy Taste of Knoxville Veggie Fest, Linda will be demonstrating how to prepare oil-free salad dressings, avoiding the high calorie, inflammatory, cardiovascular damaging, and cancer promoting ingredients present in typical commercial products.

Dressings will be available to taste after the demonstration.

865-229-8060 VM