Gastrointestinal (GI) Nutritionists and Dietitians in Markham, ON

Photo of Catherine Lin Rd, Nutritionist/Dietitian, RD
Catherine Lin Rd
Nutritionist/Dietitian, RD
5 Endorsed
Markham, ON L3R
I provide nutrition counselling in obesity management, diabetes management, digestive health, and chronic disease prevention and management.
I work with clients to develop a personalized eating plan that takes into account their preferences, lifestyle and unique challenges. I also work with clients towards building a healthier relationship with food and do so through phone or video sessions. I believe in taking a more holistic approach towards achieving health goals.
I provide nutrition counselling in obesity management, diabetes management, digestive health, and chronic disease prevention and management.
I work with clients to develop a personalized eating plan that takes into account their preferences, lifestyle and unique challenges. I also work with clients towards building a healthier relationship with food and do so through phone or video sessions. I believe in taking a more holistic approach towards achieving health goals.
(289) 312-4847 View (289) 312-4847
Photo of Timothy Leung - Timothy Leung | TeamNutrition Dietitian Toronto, Nutritionist/Dietitian, RD, DtP
Timothy Leung | TeamNutrition Dietitian Toronto
Nutritionist/Dietitian, RD, DtP
Markham, ON L3R
As Registered Dietitians in Toronto at TeamNutrition, we are guided by the deep desire to bring you to your health or performance goals. As a team, we support each other in order to offer you an exceptional service, that is personalized to you and adapted to the latest food science. This strength has led us to be chosen as a proud university partner. We were chosen to offer our services in four Universities in Québec. Our dietitians are guided by our mandate: Innovation, progress, care, and professionalism.
As Registered Dietitians in Toronto at TeamNutrition, we are guided by the deep desire to bring you to your health or performance goals. As a team, we support each other in order to offer you an exceptional service, that is personalized to you and adapted to the latest food science. This strength has led us to be chosen as a proud university partner. We were chosen to offer our services in four Universities in Québec. Our dietitians are guided by our mandate: Innovation, progress, care, and professionalism.
(289) 212-7756 View (289) 212-7756
Photo of Doreen Hsu - Sustain Nutrition Services, Nutritionist/Dietitian, MScFN, RD
Sustain Nutrition Services
Nutritionist/Dietitian, MScFN, RD
Markham, ON L3P
My expertise is in: childhood feeding issues, nutrient deficiencies, allergies, obesity, and gut issues (Celiac, fatty liver, diabetes, weight loss, IBS/IBD).
If you're a parent struggling with trying to get your child to eat, I can help you get unstuck. Don't give up on what feels like a hopeless situation. You're not alone and you don't need to solve it on your own. I have helped hundreds upon hundreds of parents overcome their child's nutrition issues. Message me to see how I can help you and your family also. To the busy mom: you're the glue to your family, and your health and wellness is just as important as everyone else's. Don't delay on taking care of yourself, reach out and see how I can help you feel better, stronger and healthier. You deserve it.
My expertise is in: childhood feeding issues, nutrient deficiencies, allergies, obesity, and gut issues (Celiac, fatty liver, diabetes, weight loss, IBS/IBD).
If you're a parent struggling with trying to get your child to eat, I can help you get unstuck. Don't give up on what feels like a hopeless situation. You're not alone and you don't need to solve it on your own. I have helped hundreds upon hundreds of parents overcome their child's nutrition issues. Message me to see how I can help you and your family also. To the busy mom: you're the glue to your family, and your health and wellness is just as important as everyone else's. Don't delay on taking care of yourself, reach out and see how I can help you feel better, stronger and healthier. You deserve it.
(289) 512-2893 View (289) 512-2893
Photo of Catherine Lin, Nutritionist/Dietitian, RD
Catherine Lin
Nutritionist/Dietitian, RD
6 Endorsed
Markham, ON L6C
I provide nutrition counselling in obesity management, diabetes management, digestive health, and chronic disease prevention and management.
I believe in taking a more holistic approach towards achieving health goals. I work with clients to develop a personalized eating plan that takes into account their preferences, lifestyle and unique challenges. I also work with clients towards building a healthier relationship with food and do so through phone or video sessions.
I provide nutrition counselling in obesity management, diabetes management, digestive health, and chronic disease prevention and management.
I believe in taking a more holistic approach towards achieving health goals. I work with clients to develop a personalized eating plan that takes into account their preferences, lifestyle and unique challenges. I also work with clients towards building a healthier relationship with food and do so through phone or video sessions.
(343) 312-5962 View (343) 312-5962
Photo of Sharlene Feng - Sharlene Feng, RD, Nutritionist/Dietitian, RD, MSc
Sharlene Feng, RD
Nutritionist/Dietitian, RD, MSc
Serves Area
An experienced dietitian offers personalized and thorough virtual nutrition counselling. She combines hospital clinical nutrition experience with supervising dietetic interns. She works with clients and pays attention to detail. Even with complicated health conditions, she can help clients to identify the key issue to meet their nutrition goal.
An experienced dietitian offers personalized and thorough virtual nutrition counselling. She combines hospital clinical nutrition experience with supervising dietetic interns. She works with clients and pays attention to detail. Even with complicated health conditions, she can help clients to identify the key issue to meet their nutrition goal.
(289) 207-6490 View (289) 207-6490
Photo of Christie Noua, Nutritionist/Dietitian, MSc, MA, BSc, RHN, RP
Christie Noua
Nutritionist/Dietitian, MSc, MA, BSc, RHN, RP
Online Only
Some concerns I focus on: autoimmune and inflammation, digestive issues, hormonal health, chronic metabolic conditions (i.e., diabetes, hypertension, cardiovascular disease), chronic fatigue and burnout, mental wellbeing, sleep, fertility, pregnancy and postpartum, obesity, weight management, disordered eating (i.e., binge eating).
I believe that nutrition, fitness and mental health care require a personalized and integrative approach that considers all aspects of your health and lifestyle. I aim to create a non-judgemental, safe space to support your journey towards a healthier you. My focus is to empower and educate you to make healthier food and lifestyle decisions.
Some concerns I focus on: autoimmune and inflammation, digestive issues, hormonal health, chronic metabolic conditions (i.e., diabetes, hypertension, cardiovascular disease), chronic fatigue and burnout, mental wellbeing, sleep, fertility, pregnancy and postpartum, obesity, weight management, disordered eating (i.e., binge eating).
I believe that nutrition, fitness and mental health care require a personalized and integrative approach that considers all aspects of your health and lifestyle. I aim to create a non-judgemental, safe space to support your journey towards a healthier you. My focus is to empower and educate you to make healthier food and lifestyle decisions.
(365) 659-3853 View (365) 659-3853
Photo of Colleen Miller, Nutritionist/Dietitian, MHSc, RD
Colleen Miller
Nutritionist/Dietitian, MHSc, RD
Online Only
Colleen's practice focus is all this digestive health related.
My one-on-one coaching helps you understand your symptoms, make sense of mixed advice, and create a clear, realistic plan that fits your lifestyle. You don’t need another restrictive diet — you need clarity, confidence, and someone in your corner who truly gets it.
Colleen's practice focus is all this digestive health related.
My one-on-one coaching helps you understand your symptoms, make sense of mixed advice, and create a clear, realistic plan that fits your lifestyle. You don’t need another restrictive diet — you need clarity, confidence, and someone in your corner who truly gets it.
(647) 371-5517 View (647) 371-5517
Photo of Jessica Wong, Nutritionist/Dietitian, MAN, RD
Jessica Wong
Nutritionist/Dietitian, MAN, RD
Online Only
I am equipped to support clients experiencing health, digestive or chronic disease management challenges.
As Registered Dietitian working at The Real Deal Health and Wellness Group. I believe nutrition care plans should be unique and personalized, based on lifestyle preferences and health and wellness goals.
I am equipped to support clients experiencing health, digestive or chronic disease management challenges.
As Registered Dietitian working at The Real Deal Health and Wellness Group. I believe nutrition care plans should be unique and personalized, based on lifestyle preferences and health and wellness goals.
(289) 902-3527 View (289) 902-3527
Photo of Kristie Pun, Nutritionist/Dietitian, MHSc, RD
Kristie Pun
Nutritionist/Dietitian, MHSc, RD
Online Only
Waitlist for new clients
Looking for some guidance on healthy eating and nutrition? Do you have questions about a particular diet? Or are you seeking evidence-based advice to manage your health or a specific chronic health condition (i.e. diabetes, high blood pressure, heart disease, gout, etc.)?
Looking for some guidance on healthy eating and nutrition? Do you have questions about a particular diet? Or are you seeking evidence-based advice to manage your health or a specific chronic health condition (i.e. diabetes, high blood pressure, heart disease, gout, etc.)?
(289) 806-5156 View (289) 806-5156
Photo of Rowena Leung, Nutritionist/Dietitian, RD, CDE
Rowena Leung
Nutritionist/Dietitian, RD, CDE
Markham, ON L3R
I am very familiar with a busy schedule as I am a mother of 2 young children, a fur parent to a mini golden doodle and am working full time. I have close to 15 years of experience working with all segments of the population ranging from prenatal, postpartum, pre-school children, school aged children (K-12), university students, young professionals and retired individuals. If an individual wants culturally competent services, I am able to provide services in Cantonese, Mandarin and English. I also work with clients who would like to incorporate more Asian inspired cuisine into their diet.
I am very familiar with a busy schedule as I am a mother of 2 young children, a fur parent to a mini golden doodle and am working full time. I have close to 15 years of experience working with all segments of the population ranging from prenatal, postpartum, pre-school children, school aged children (K-12), university students, young professionals and retired individuals. If an individual wants culturally competent services, I am able to provide services in Cantonese, Mandarin and English. I also work with clients who would like to incorporate more Asian inspired cuisine into their diet.
(289) 276-5979 View (289) 276-5979
Photo of Anna Prestia, Nutritionist/Dietitian, RD
Anna Prestia
Nutritionist/Dietitian, RD
Markham, ON L3R
Accepting NEW patients-next day appts available for phone & video sessions. I have 20+ years experience as a Registered Dietitian with a wide range of experiences. I specialize in infant, pediatric & adult nutrition for people 0-99. I am well-versed in all chronic and acute diseases including cancer, diabetes, eating disorders, infant feeding/introducing solids/picky eating, fad diets (keto), weight management, IBS, and more. I have worked in acute care hospital settings, outpatient clinics & private practice. I offer practical guidance that builds confidence, supports symptoms, and strengthens your relationship with food.
Accepting NEW patients-next day appts available for phone & video sessions. I have 20+ years experience as a Registered Dietitian with a wide range of experiences. I specialize in infant, pediatric & adult nutrition for people 0-99. I am well-versed in all chronic and acute diseases including cancer, diabetes, eating disorders, infant feeding/introducing solids/picky eating, fad diets (keto), weight management, IBS, and more. I have worked in acute care hospital settings, outpatient clinics & private practice. I offer practical guidance that builds confidence, supports symptoms, and strengthens your relationship with food.
(289) 276-7737 View (289) 276-7737
Photo of Sandra Edwards, Nutritionist/Dietitian, RD, CLT
Sandra Edwards
Nutritionist/Dietitian, RD, CLT
Markham, ON L3R
As a Registered Dietitian I help my clients achieve a healthier lifestyle. My ideal client wants increased energy, weight loss without deprivation, less medication, improved blood cholesterol, balanced blood sugars, reduced stress levels, increased physical activity and feelings of well-being. She may have been on numerous diets and struggling with work/life balance. She has discovered that restrictive diets simply don't work. She is ready to embark on a healthy lifestyle approach. Best results with a 3 mo, 6 mo and 12 month health coaching plan.
As a Registered Dietitian I help my clients achieve a healthier lifestyle. My ideal client wants increased energy, weight loss without deprivation, less medication, improved blood cholesterol, balanced blood sugars, reduced stress levels, increased physical activity and feelings of well-being. She may have been on numerous diets and struggling with work/life balance. She has discovered that restrictive diets simply don't work. She is ready to embark on a healthy lifestyle approach. Best results with a 3 mo, 6 mo and 12 month health coaching plan.
(416) 937-1458 View (416) 937-1458
Photo of Vanessa Hurley, Nutritionist/Dietitian, RD
Vanessa Hurley
Nutritionist/Dietitian, RD
6 Endorsed
Markham, ON L3S
I love working with individuals across the lifespan & have experience with chronic disease prevention (diabetes, heart health, cancer), women’s health (pregnancy, fertility, PCOS, menopause), infant/child/teen health (introduction to solids, feeding relationship, selective eating), special dietary restrictions, allergies/intolerances & digestive concerns.
I am accepting NEW patients for phone/video sessions for people of all ages 0+. I have 20+ years of experience providing evidence-based food & nutrition advice as well as compassionate care to infants, kids, teens, adults & seniors. I will work with you to create the best possible plan to meet your food & nutrition goals. Healthy eating is not just what you eat, but also why & how you eat. I can also work with you on ensuring you develop & maintain a heathy relationship with food, while integrating intuitive eating principles & mindful eating strategies. Let’s work together to make positive & lasting changes to your health.
I love working with individuals across the lifespan & have experience with chronic disease prevention (diabetes, heart health, cancer), women’s health (pregnancy, fertility, PCOS, menopause), infant/child/teen health (introduction to solids, feeding relationship, selective eating), special dietary restrictions, allergies/intolerances & digestive concerns.
I am accepting NEW patients for phone/video sessions for people of all ages 0+. I have 20+ years of experience providing evidence-based food & nutrition advice as well as compassionate care to infants, kids, teens, adults & seniors. I will work with you to create the best possible plan to meet your food & nutrition goals. Healthy eating is not just what you eat, but also why & how you eat. I can also work with you on ensuring you develop & maintain a heathy relationship with food, while integrating intuitive eating principles & mindful eating strategies. Let’s work together to make positive & lasting changes to your health.
(289) 276-6973 View (289) 276-6973
Photo of Jia Yi Mok, Nutritionist/Dietitian, RD, RDN
Jia Yi Mok
Nutritionist/Dietitian, RD, RDN
1 Endorsed
Online Only
Jia Yi is an experienced Prenatal and Paediatric Dietitian with a passion for helping individuals and families achieve optimal health through nutrition. She debuted her career in a mental health institution, and later pivoted into the prenatal and paediatrics field as she discovered her passion with this clientele. Growing up in a multicultural country with many delicious cultural foods, she brings in a culturally sensitive approach in her sessions, finding the right balance for each individual. Outside of her professional experience, she has a nephew with autism. Witnessing their family dynamic first hand has greatly influenced her
Jia Yi is an experienced Prenatal and Paediatric Dietitian with a passion for helping individuals and families achieve optimal health through nutrition. She debuted her career in a mental health institution, and later pivoted into the prenatal and paediatrics field as she discovered her passion with this clientele. Growing up in a multicultural country with many delicious cultural foods, she brings in a culturally sensitive approach in her sessions, finding the right balance for each individual. Outside of her professional experience, she has a nephew with autism. Witnessing their family dynamic first hand has greatly influenced her
(365) 602-1040 View (365) 602-1040

More Dietitians and Nutritionists Nearby

Photo of Hannah Donaldson, Nutritionist/Dietitian, RD
Hannah Donaldson
Nutritionist/Dietitian, RD
Online Only
Or are you struggling with digestive discomfort, but are worried about following an overwhelming elimination diet?
I started Donaldson Nutrition to help you. My mission is to empower strength athletes to train harder, meet body composition goals and feel more confident in their bodies — through practical, evidence-based nutrition that values mental health.
Or are you struggling with digestive discomfort, but are worried about following an overwhelming elimination diet?
I started Donaldson Nutrition to help you. My mission is to empower strength athletes to train harder, meet body composition goals and feel more confident in their bodies — through practical, evidence-based nutrition that values mental health.
(289) 536-4188 View (289) 536-4188
Photo of Usha Nathwani - Nutrismart Eating, Nutritionist/Dietitian, MHSc, RD
Nutrismart Eating
Nutritionist/Dietitian, MHSc, RD
Online Only
As a clinical dietitian, I have expertise in nutritional management for a variety of medical issues - diabetes, cancer, gastrointestinal disorders (crohn's, ulcerative colitis, celiac disease, irritable bowel syndrome), food allergies and intolerances, heart disease, weight management, PCOS, kidney/liver diseases, tube feeding and nutrition supplementation.
I have been a dietitian for over 35 years and have provided nutritional counselling for various medical conditions in a hospital setting and in private practice. I strongly feel that weight management is an important health issue as it can prevent chronic diseases such as diabetes, heart disease and cancer. It is never too late to change your food habits. Fad diets may help you lose weight initially but they are not sustainable longterm. I will guide you to follow easy and practical meal plan to achieve a healthy weight without 'chronic dieting'. Make 'healthy weight' your goal for 2026.
As a clinical dietitian, I have expertise in nutritional management for a variety of medical issues - diabetes, cancer, gastrointestinal disorders (crohn's, ulcerative colitis, celiac disease, irritable bowel syndrome), food allergies and intolerances, heart disease, weight management, PCOS, kidney/liver diseases, tube feeding and nutrition supplementation.
I have been a dietitian for over 35 years and have provided nutritional counselling for various medical conditions in a hospital setting and in private practice. I strongly feel that weight management is an important health issue as it can prevent chronic diseases such as diabetes, heart disease and cancer. It is never too late to change your food habits. Fad diets may help you lose weight initially but they are not sustainable longterm. I will guide you to follow easy and practical meal plan to achieve a healthy weight without 'chronic dieting'. Make 'healthy weight' your goal for 2026.
(647) 930-7069 View (647) 930-7069
Photo of Andrea Senchuk, Nutritionist/Dietitian, RD, MHSc
Andrea Senchuk
Nutritionist/Dietitian, RD, MHSc
Online Only
As a Monash FODMAP-trained dietitian, I help adults struggling with digestive issues like IBS, diverticulitis, celiac disease, SIBO, bloating, reflux, constipation and diarrhea take control of their gut with science-backed, personalized diet and lifestyle strategies.
I work with my clients using a client portal called Practice Better, available on desktop and mobile app. This is where clients join our video sessions, reschedule appointments, access resources and make payments.
As a Monash FODMAP-trained dietitian, I help adults struggling with digestive issues like IBS, diverticulitis, celiac disease, SIBO, bloating, reflux, constipation and diarrhea take control of their gut with science-backed, personalized diet and lifestyle strategies.
I work with my clients using a client portal called Practice Better, available on desktop and mobile app. This is where clients join our video sessions, reschedule appointments, access resources and make payments.
View
Photo of Anna Prestia, Nutritionist/Dietitian, RD
Anna Prestia
Nutritionist/Dietitian, RD
Mississauga, ON L5B
I am well-versed in all chronic & acute diseases including cancer, diabetes, infant feeding/introducing solids/picky eating, eating disorders, weight management, IBS, GI issues & allergies.
I believe in making realistic and attainable goals that are specific to each client. Every nutrition plan I recommend is unique and tailored to each individual depending on their goals, lifestyles and timelines. I can teach you the tools needed to succeed in your personal nutritional goals. All sessions are done over phone or secure video.
I am well-versed in all chronic & acute diseases including cancer, diabetes, infant feeding/introducing solids/picky eating, eating disorders, weight management, IBS, GI issues & allergies.
I believe in making realistic and attainable goals that are specific to each client. Every nutrition plan I recommend is unique and tailored to each individual depending on their goals, lifestyles and timelines. I can teach you the tools needed to succeed in your personal nutritional goals. All sessions are done over phone or secure video.
(365) 398-0757 View (365) 398-0757
Photo of Anna Prestia, Nutritionist/Dietitian, RD
Anna Prestia
Nutritionist/Dietitian, RD
2 Endorsed
Online Only
have expertise spanning infant and pediatric nutrition, oncology, prenatal/post-natal nutrition, disordered eating, cardiac health, diabetes, weight management, weight concerns, cancer, GI conditions, allergies, anti-inflammatory nutrition & tube feedings.
I offer practical guidance that builds confidence, supports symptoms, and strengthens a positive relationship with food. I have worked as a Clinical Lead Dietitian in acute care and outpatient settings. I am also a Pediatric Nutrition Specialist and member of the eating disorder team where we develop treatment protocols for pediatric and adult populations.
have expertise spanning infant and pediatric nutrition, oncology, prenatal/post-natal nutrition, disordered eating, cardiac health, diabetes, weight management, weight concerns, cancer, GI conditions, allergies, anti-inflammatory nutrition & tube feedings.
I offer practical guidance that builds confidence, supports symptoms, and strengthens a positive relationship with food. I have worked as a Clinical Lead Dietitian in acute care and outpatient settings. I am also a Pediatric Nutrition Specialist and member of the eating disorder team where we develop treatment protocols for pediatric and adult populations.
(289) 204-0170 View (289) 204-0170
Photo of Sarah Hunt, Nutritionist/Dietitian, RD, MAN, BaSc
Sarah Hunt
Nutritionist/Dietitian, RD, MAN, BaSc
1 Endorsed
Serves Area
Sarah studied dietetics at the University of Guelph receiving both her Bachelor’s in Applied Human Nutrition and Master’s of Applied Nutrition and has continued education in ‘FODMAP and IBS Training’, ‘Eating Disorder Sensitivity Training’, and ‘ Digestive Disorders & Eating Disorders’.
Our mission is to provide comprehensive and compassionate support for individuals impacted by digestive troubles and eating disorders to find symptom relief and food freedom. Our approach is evidence-based, holistic and individualized, always considering the unique needs of each patient.
Sarah studied dietetics at the University of Guelph receiving both her Bachelor’s in Applied Human Nutrition and Master’s of Applied Nutrition and has continued education in ‘FODMAP and IBS Training’, ‘Eating Disorder Sensitivity Training’, and ‘ Digestive Disorders & Eating Disorders’.
Our mission is to provide comprehensive and compassionate support for individuals impacted by digestive troubles and eating disorders to find symptom relief and food freedom. Our approach is evidence-based, holistic and individualized, always considering the unique needs of each patient.
(289) 207-7531 View (289) 207-7531
Gastrointestinal (GI) Nutritionists and Dietitians
What is gut health?
Gut health refers to the overall functioning and well-being of the gastrointestinal (GI) system. Key to gut health is the gut microbiome, which is the collection of healthy bacteria living in the gut. These bacteria are essential for the digestion and breakdown of food, and their health significantly impacts digestion. Poor gut health can result in symptoms such as bloating, gas, diarrhea, constipation, and general abdominal discomfort, which may indicate imbalances or issues with the gut microbiome.

Can diet help with GI issues?
Diet plays a major role in gut health, and changes in diet can often reduce or eliminate some of the symptoms associated with gastrointestinal (GI) issues. Often, GI distress is due to food intolerances or sensitivities, such as gluten sensitivity or lactose intolerance. In these cases, eliminating the problematic foods from the diet can resolve the issue. GI problems can also stem from a combination of environmental or genetic factors, such as in the case of irritable bowel syndrome (IBS). Disruptions in the gut microbiome, such as those caused by taking antibiotics, can also lead to GI issues. In both scenarios, maintaining a balanced diet as much as possible with foods that support a healthy microbiome—such as fruits, vegetables, whole grains, and probiotic foods—can often significantly reduce symptoms and improve gut health.

What are the best foods for gut health?
Maintaining a balanced microbiome is essential for gut health, and this is best achieved through a varied diet rich in fruits, vegetables, and probiotic foods. Fruits and vegetables provide essential nutrients and fiber, which nourish the beneficial bacteria in the gut. Probiotic foods, which are those that contain live bacteria, are also great for gut health. Consuming probiotic foods and drinks, such as yogurt, kefir, kombucha, and tempeh, can help support the microbiome by contributing to the diversity of bacteria within the gut.

When should I see a dietitian for GI issues?
Many people can benefit from seeing a dietitian for GI issues. In general, most dietitians are knowledgeable about what foods support gut health and may help clients choose foods that support a healthy GI system, such as fruits and vegetables high in fiber or foods high in probiotics. Dietitians may be especially beneficial to clients with known gastrointestinal concerns, such as irritable bowel syndrome (IBS) or gastroesophageal reflux disease (GERD). For clients diagnosed with these or similar conditions, dietitians can help clients identify food triggers and develop a meal plan for the client that minimizes symptoms. Dietitians may also work with clients who are having gastrointestinal distress (such as bloating, gas, constipation, diarrhea, etc.) but are not aware of the cause of their symptoms. In such cases, dietitians may be able to help the client identify the cause of the GI distress and coordinate with other medical professionals to help the client better manage their symptoms.