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About Krystal LeBreton, MSc, RD, CDE at No Sweat Nutrition

Krystal LeBreton, MSc, RD, CDE

(she/her/they/them)
A seasoned marathoner and ultrarunner herself, Krystal has been immersed in the endurance community for more than two decades. Since running her first marathon in 2003, she has broken the 3-hour marathon barrier, completed internationally recognized endurance events including the Comrades Ultra Marathon in South Africa, and recently finished the challenging Haliburton 100-mile trail race. Her practical experience and being a mom allows her to connect authentically with athletes facing the real-world demands of training volume, race-day fueling, hydration, recovery, and balancing performance with everyday life.
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Location

Ontario

Areas of Focus

Our team of dietitians all bring a strong background in sports nutrition. Here’s what each one focuses on most:
Celiac Disease
IBS
Iron Deficiency
Perimenopause
Plant-based + Vegan
Postmenopause
T1 + T2 Diabetes
Work With Krystal

With many years of experience as a Certified Diabetes Educator, Krystal also brings specialized expertise in diabetes management for athletes, continuous glucose monitoring, insulin pump technologies, and nutrition strategies for performance across the lifespan. She is particularly passionate about helping endurance athletes optimize energy availability, prevent burnout, manage GI concerns such as ‘runner’s stomach,’ and navigate performance through perimenopause and beyond.

Outside of work…

Outside of work Krystal can be found with other soccer moms at her kid’s games, chasing her two furry feline princesses, or travelling the world with her family.

Krystal's Approach

Krystal practices from a Health at Every Size (HAES) approach, prioritizing weight-neutral care that centers compassion, body trust, and client autonomy. She has an empathetic counseling style grounded in lived athletic experience. She brings humour, empathy, and a grounded presence to her work, supported by a strong personal mindfulness practice.

Areas of Practice

  • Diabetes (T1D and T2D) and sport
  • Fueling and hydration strategies for training, competition, and race day
  • Iron deficiency and anemia
  • Pregnancy and postpartum nutrition
  • Gastrointestinal issues including “runners stomach”, constipation, Celiac disease, and Irritable Bowel Syndrome (IBS)
  • Masters athletes, including perimenopause and postmenopause
  • Sports performance and dietary supplement recommendations
  • Vegetarian, plant-based, and vegan athletes
  • Injury recovery and rehabilitation

Professional Background

Registered Dietitian with the College of Dietitians of Ontario

Note: Krystal provides 1:1 nutrition counselling for residents of Ontario.

Education

  • Bachelor of Science from the University of British Columbia
  • Masters in Health Psychology from Trent University – qualitative thesis: Risk Perceptions for High Risk Pregnancies
  • Masters in Health Science from University of Toronto

Additional Training

  • Certified Diabetes Educator (CDE)
  • San’yas Indigenous Cultural Safety Training
  • ED for RDs: Eating Disorder Education for Registered Dietitian 1-Year Online Training
  • Well Now Learning Circle with Lucy Aphramor

Want to work with Krystal?

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