About Mary Cranmer-Byng, MSc. RD, CDE

Registered Dietitian, Certified Diabetes Educator, 200-h Certified Yoga Teacher,

and STOTT Pilates Certified Instructor in Hamilton, ON

On leave until September 2023 – Not accepting clients 

Mary Cranmer-Byng Registered Dietitian and Yoga Instructor in Hamilton and Burlington

Hello and welcome! Wondering what can I help you with?

I am Mary, a foodie and movement enthusiast, Registered Dietitian, Yoga teacher, Pilates instructor, and educator. I love hiking on the Bruce Trail, trying out new local restaurants, laughing, and smiling. I became interested in nutrition and movement at age 14 after researching Registered Dietitians (RDs) for a school project and attending my first yoga class. Until then, I was a picky eater, barely eating any vegetables, and had a poor body image. My budding interest in nutrition led me to try new foods and learn to cook. This along with discovering the healing and mindful practice of yoga, led me to where I am today.

I work with clients to help them become the healthiest versions of themselves, inside and out, through empowering them to make small changes and creating a supportive environment. Food and movement are essential parts of life, yet it is easy to get busy with other things and not leave enough time to take care of ourselves. I strive to provide you with the knowledge, skills, and individualized solutions to help you reach your nutrition and health goals. I believe that all foods can fit and have a strong interest in helping people to have a healthy relationship with food and their body. I practice nutrition agonism, meaning that there is no one size fits all approach to healthy eating. There are as many approaches as there are people, and my role as an RD is to help you figure out what will work best for you right now, given your likes, dislikes, health conditions, and life situation.

I am passionate about nutrition education and currently teach a vitamin and mineral metabolism course at the University of Toronto in Department of Nutritional Sciences. I have taught undergraduate nutrition courses at Sheridan College and the University of Guelph in the past and continue to provide guest lectures upon request.

As a scientist at heart, I practice anatomy-informed yoga and believe that any yoga pose can help, and any pose can harm. While experiencing chronic low back pain, I fell in love with pilates and am now a STOTT Pilates certified instructor.

Fun fact:

I find weekend meal prep to be one of the easiest ways to eat healthy during a busy week. Why make one meal when you can make 6? I will even answer to ‘Meal Prep Mary’!


  • Dietetic Internship (year long practical training to become a Registered Dietitian), London Health Sciences Centre
  • MSc. in Human Health and Nutritional Science, University of Guelph
  • BSc. in Human Nutrition with First Class Honours, St. Francis Xavier University
  • Certified Diabetes Educator, certification achieved in 2017
  • STOTT Pilates Mat and Reformer training, The Pilates Body
  • Total Barre Foundations Course, STOTT Corporate Training Centre
  • 200-hour Yoga Teacher Training, De La Sol Yoga Studios


  • College of Dietitians of Ontario
  • Dietitians of Canada
  • Canadian Nutrition Society; Member of the Education Committee

“You don’t have to cook fancy or complicated masterpieces – just good food from fresh ingredients.” – Julia Child

Words to live by

“Nothing is impossible. The word itself says ‘ I’m possible!'” – Audrey Hepburn

Words to live by

Why work with a Registered Dietitian (RD)?


Registered Dietitians are highly trained experts in food and human nutrition who have completed a 4 year accredited Bachelor’s degree and a year long practical internship. RDs must be a member of the provincial college which establishes and enforces standards for entry-to-practice, professional scope of practice, ethics, professional conduct and continuing competence. The College of Dietitians of Ontario protects the public and ensures quality care is provided. Dietitian is a protected title, whereas nutritionist is not protected in Ontario. People can call themselves a nutritionist, but they are not provincially regulated health professionals and have often completed privately owned training programs that vary in length and rigor, or no training at all. For more information, visit:

RD services are covered by insurance plans and are tax deductible

If your benefits package does not cover RD services, you can suggest to your employer that this option be added.

Want your employer to add RD services to your benefits package?

Please visit this link, or ask me at your visit for a letter you can provide to your employer