Registered Dietitians • Sustainable Weight Loss • Virtual Nutrition Counselling
Meet Our Registered Dietitian Team
Diet Redefined is a team of Registered Dietitians helping busy professionals lose weight sustainably, improve their relationship with food, and build nutrition habits that fit real life.
Our virtual dietitian appointments support clients across Vancouver, British Columbia, and Ontario with evidence-based nutrition counselling, custom meal planning, accountability, gut health support, blood sugar management, and long-term weight loss coaching.
Why Work With A Registered Dietitian?
Nutrition advice is everywhere. Our role is to help you turn that information into a realistic plan that works for your body, schedule, preferences, health history, and goals.
Evidence-Based Nutrition
Our team uses a science-based approach to support sustainable weight loss, blood sugar, cholesterol, digestion, energy, and overall health.
Real-Life Coaching
We build strategies for restaurants, travel, long workdays, family life, cravings, stress eating, and social events — not just ideal weeks.
Personalized Support
Your plan is tailored to your goals, health history, preferences, schedule, culture, budget, and the level of accountability you need.
Helen Tieu, RD, MAN, CDE
Founder & Registered Dietitian
Helen is the founder of Diet Redefined and a Registered Dietitian who helps busy professionals lose weight in a sustainable way – without restricting food or the parts of their lifestyle that matter.
After working with hundreds of clients, she began to notice the same pattern. Smart, high-achieving professionals weren’t struggling because they lacked discipline. They struggled because the plan didn’t fit their lifestyle.
Our approach focuses on building sustainable habits and providing clear structure – combined with flexibility. Clients learn to make informed food choices in real life – while still being able to eat out, travel, enjoy carbs, and have a social life – while making progress towards their weight loss goals, and maintaining a good relationship with food.
Helen’s work is grounded in evidence-based nutrition, personalized coaching, with a strong understanding of why extreme dieting and restriction often backfire long-term. The goal isn’t to lose weight for three months – it’s to keep the weight off for life, with confidence, clarity, and ease.
Outside of work, Helen enjoys weight training, going on walks, and continuing to grow Diet Redefined.
Credentials:
RD – Registered Dietitian – College of Dietitians of British Columbia
MAN– Master of Applied Nutrition Degree – University of Guelph
CDE – Certified Diabetes Educator – Canadian Diabetes Educators Certification Board
BSc – Bachelor of Science in Human Nutritional Sciences – University of Manitoba
Leeauna Duchesne, RD
Registered Dietitian | Sustainable Weight Loss & Gut Health
Leeauna is a Registered Dietitian who helps busy professionals take control of their weight, energy, and digestion – without the stress of restrictive diets. Whether your goal is sustainable weight loss, eating for fitness, or finally finding relief from digestive issues, she uses a practical, science-based approach to help clients get results that last.
Leeauna specializes in gut health and chronic disease management, including IBS, IBD (Crohn’s and ulcerative colitis), chronic constipation and diarrhea, acid reflux, fatty liver disease, and H. pylori. She also uses a functional nutrition lens to get to the root of symptoms – and create a clear path forward.
If you’ve ever felt frustrated with food sensitivities, bloating, or the never-ending “what’s for dinner?” cycle, she gets it – she’s helped hundreds of clients turn that around with personalized strategies that work in real life.
Leeauna has completed advanced training in Mastering Gut Healing: Effectively Applying the 5R Protocol, and collaborates with F45 gyms to support members in using nutrition to fuel performance, recovery, and long-term results.
When she’s not working with clients, you’ll find her cooking up new recipes, brainstorming meal ideas, getting in a workout at F45, or walking through nature with her dog Jack.
If you’re ready to feel confident, energized, and at ease in your body again – let’s connect!
Credentials:
RD – Registered Dietitian – College of Dietitians of British Columbia & Ontario
BASc – Bachelor of Applied Science in Nutrition and Food – Toronto Metropolitan University
How Our Team Can Help
Our Registered Dietitians support clients with weight loss and related nutrition concerns using a practical, personalized, evidence-based approach.
- Sustainable weight loss coaching
- Custom meal planning
- Emotional eating and stress eating support
- Restaurant, travel, and social-event strategies
- Vegetarian and plant-based nutrition
- Blood sugar, diabetes, and insulin resistance
- Gut health, IBS, bloating, constipation, and reflux
- PCOS, menopause, cholesterol, and blood pressure
- Online nutrition counselling
- Food sensitivity and intolerance support
Frequently Asked Questions
Who Are The Dietitians At Diet Redefined?
Diet Redefined is led by Helen Tieu, RD, MAN, CDE, and includes Registered Dietitian Leeauna Duchesne, RD. The team supports clients with sustainable weight loss, meal planning, gut health, blood sugar, chronic disease management, and realistic nutrition habits.
Do I Work With A Registered Dietitian?
Yes. Diet Redefined’s client support is provided by Registered Dietitians who use an evidence-based approach to nutrition counselling, weight loss coaching, meal planning, and health-related nutrition support.
Can I Choose Which Dietitian I Work With?
During your complimentary session, the team can discuss your goals, preferences, health concerns, and the best fit for your support. The goal is to match you with the right dietitian and program structure for your needs.
Do You Offer Virtual Appointments?
Yes. Diet Redefined provides virtual appointments for clients across Vancouver, British Columbia, and Ontario.
What Can Your Dietitians Help With?
The team supports sustainable weight loss, custom meal planning, emotional eating, gut health, IBS, bloating, blood sugar management, cholesterol, PCOS, menopause, plant-based nutrition, fitness nutrition, and long-term habit change.
Ready To Work With A Registered Dietitian?
Book a complimentary session to discuss your goals, what has felt difficult in the past, and whether Diet Redefined is the right fit.
You can also explore our Weight Loss Program, Our Approach, or Dietitian Near Me page.