Amy Leahy, BA Health Sciences in Nutritional & Dietetic Medicine

Coach Team Leader, Nutritionist

Amy Leahy is a degree certified Nutritionist, holding a Bachelor of Health Sciences (BHSc) in Nutritional and Dietetic Medicine. It was through studying the overwhelming evidence about how a plant-based lifestyle can truly change a person’s health that moved Amy from a vegetarian to a fully plant-based lifestyle.

Her passion and drive are to educate & empower others with the knowledge to make the best health choices for themselves. Amy is a passionate keynote speaker and educator on plant-based nutrition in her home country of Australia.

Wendi Sullivan MA, RDN, CDCES

Diabetes Coach, Registered Dietitian/Nutritionist, and Certified Diabetes Care and Education Specialist, Living with Type 1 Diabetes

Wendi's passion for helping people with diabetes goes back to when her Dad was suddenly diagnosed with Type 1 diabetes when she was 12 years old. Her whole family's diet immediately changed to help her Dad become healthy again. Wendi was later diagnosed at age 21 with type 1 diabetes. She was inspired to become a registered dietitian and certified diabetes care and education specialist to work with people who have diabetes.

Wendi graduated with both her bachelor's and master's degrees in nutrition from Western Michigan University. She has worked with people with diabetes for over 13 years. Wendi loves her nutritious lifestyle!

Michelle King Davis, BA Education

Diabetes Coach, Certified Health Coach & Personal Trainer

Michelle began a plant-based journey over 20 years ago in response to health
challenges. She became an avid studier of evidence-based nutrition and still
considers herself a lifelong learner. In the early 2000’s she co-authored the book,
Never Be Fat Again. She spent over a decade coaching hundreds, including people living with prediabetes and type 2 diabetes, in transitioning to a whole-food, plant-based lifestyle having dedicated her life to helping others thrive, she is excited to be part of the Mastering Diabetes coaching team.

Linda Rukavina, NBC-HWC, INHC

Diabetes Coach, National Board Certified Health & Wellness Coach, Integrative Nutrition Health Coach, living with insulin-dependent Monogenic Diabetes

Linda is certified through the National Board for Health & Wellness Coaches and holds a Lifestyle Medicine Coach (LMC) certificate from the American College of Lifestyle Medicine. She completed her health coach training at the Institute for Integrative Nutrition. She also has a BBA and MBA in Finance. Prior to health coaching, she worked in corporate finance and consulting.

She has been living with diabetes since the age of 30 but didn’t get serious about her health until 2012 when she transitioned to a plant-based diet and watched her A1C fall from 6.7% to 5.8%. She worked for many years to reverse her diabetes with diet and exercise but eventually learned she had low insulin production and started taking insulin. To help with the transition, she did private coaching Mastering Diabetes. The accountability, competence, and confidence she gained were key to her success and the inspiration for her to pursue health coaching. Now she loves empowering others with the life-changing power of whole food plant-based eating and lifestyle change!

Marco Ranzi, MS

Diabetes Coach, MS in Nutrition

Marco, MS holds a Master’s Degree in Nutrition with an emphasis in Human Performance from Logan University to go along with a certificate in Plant-Based Nutrition from Cornell. He is also certified as a National Academy of Sports Medicine Personal Trainer and Sleep Expert and is a Permaculture Design Course graduate. Marco strongly believes in a holistic approach to health and utilizing food as medicine. He has the unique experience of being raised plant-based and has been following this lifestyle for over 20 years.

In 2017 Marco hiked the entire 2,190 miles of the Appalachian Trail powered completely by plants.

He now lives in Costa Rica with his wife Maria where they tend to their gardens and fruit forest with regenerative practices. They enjoy the local beaches and waterfalls in their free time.

Jessica Stidham, NBC-HWC, INHC

Diabetes Coach, National Board Certified Health & Wellness Coach, Integrative Nutrition Health Coach, living with Type 1 Diabetes

Jessica is certified through the National Board for Health & Wellness Coaches and she completed her health coach training at the Institute for Integrative Nutrition. She was diagnosed with type 1 diabetes in 1996 when she was 3 years old. She was also diagnosed with celiac disease at a young age.

Jessica began her plant-based journey in 2016 by becoming a client of Cyrus Khambatta when he was running his company, Mangoman Nutrition. She was able to achieve all of her goals such as achieving a 5.4% A1c, losing 50 lbs, and cutting her insulin needs by more than half while eating 300x more carbohydrates. She has the unique experience of being one of the first hires on the Mastering Diabetes team and even helped decide the name of the company. Now she loves empowering others to achieve their goals!

Jenelle Longo, RN, FNP

Certified Health Coach, Registered Nurse, Master of Science Degree as a Family Nurse Practitioner

Jenelle is a certified health coach, Registered Nurse, and holds a master of science degree as a Family Nurse Practitioner. She is certified in Plant-Based Nutrition by eCornell and the T. Colin Campbell Center for Nutrition Studies and is a member of the American College of Lifestyle Medicine.

In 2015, her life took a transformative turn after reading "The China Study" by T. Colin Campbell. This eye-opening read introduced her to the incredible potential of Whole Food Plant-Based (WFPB) nutrition in preventing and even reversing chronic diseases. Eager to delve deeper, she immersed herself in evidence-based articles, books, documentaries, and attended International
Plant-Based Conferences. Inspired by the life-changing benefits she discovered throughout her own plant based journey, Jenelle made it her mission to share the power of WFPB with others, leading her to pursue a career in health coaching.

In her free time Jenelle cherishes her time with family, running outside, practicing yoga and meditation, and listening to podcasts including "Plant Strong" with Rip Esselstyn and “On Purpose” with Jay Shetty.

Karin Yehling

Health Coach

Karin has watched 4 generations of family members get diagnosed with type 2 diabetes; including herself. She was diagnosed at the age of 35 while she was a competitive racquetball player. Luckily, she was able to make enough changes to get her A1C back to normal relatively quickly. However, a whole food plant based diet was NOT on her radar so her numbers started creeping back up again. Using the Mastering Diabetes method has proven itself with a diabetes reversal once again (the right way this time).

Karin spent over 20 years in the health and fitness field as a personal trainer and realized that food is the foundation of health. So, she set off to get her Nutrition Coach certification from Precision Nutrition and then her Health Coach certification from Functional Medicine Coaching Academy. Her passion is to empower people with the knowledge and skills to make diabetes a thing of their past using food as medicine in the form of a low fat whole food plant based diet. As she guides you on your journey to health, rest assured that Karin has been on this journey as well, and knows how life-changing it can be to reclaim your health.

Jacinda Shapiro, RN, BSN, CDCES, DipACLM, Pn1, WellStart Coach

Registered Nurse, Diabetes Coach, Certified Diabetes Care and Education Specialist, and Diplomate of the American College of Lifestyle Medicine

Jacinda has over 27 years of nursing expertise, and earned the distinguished title of Diplomate of the American College of Lifestyle Medicine in 2023. As a dedicated diabetes educator and coach, she passionately advocates for Plant-Powered Diabetes Care, Prevention, and Reversal. Jacinda is committed to empowering individuals, guiding them to take control of their health by embracing the transformative influence of knowledge and making healthy lifestyle choices.

In 2017, Jacinda initiated a whole food plant-based (WFPB) diet for her entire family to address her son's severe allergies and asthma. Witnessing the transformative impact on his health, Jacinda also experienced the reversal of her underlying health conditions. Beyond her passion for promoting health, she finds joy in running, hiking, indulging in music, and cherishing moments with her family.