Gastrointestinal (GI) Nutritionists and Dietitians in Owen Sound, ON

Photo of Anna Prestia, Nutritionist/Dietitian, RD
Anna Prestia
Nutritionist/Dietitian, RD
2 Endorsed
Online Only
I 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.
I 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) 401-1597 View (289) 401-1597
Photo of Carol Holland, Nutritionist/Dietitian, RD, CBE
Carol Holland
Nutritionist/Dietitian, RD, CBE
Online Only
Whether your goal is to manage blood pressure or cholesterol, prevent diabetes, lose weight or get your gut symptoms under control, together we'll create a personalized plan to help you take charge of your symptoms and get back to living your best life.
Losing weight is hard, and being trapped in a cycle of yo-yo dieting can be frustrating. As a Certified Bariatric Educator, I can help you navigate the maze of meal planning, food cravings and behaviour change to help you reach your Best Weight. I can also support you with GLP-1 medications and the bariatric surgery progress.
Whether your goal is to manage blood pressure or cholesterol, prevent diabetes, lose weight or get your gut symptoms under control, together we'll create a personalized plan to help you take charge of your symptoms and get back to living your best life.
Losing weight is hard, and being trapped in a cycle of yo-yo dieting can be frustrating. As a Certified Bariatric Educator, I can help you navigate the maze of meal planning, food cravings and behaviour change to help you reach your Best Weight. I can also support you with GLP-1 medications and the bariatric surgery progress.
(548) 325-8963 View (548) 325-8963

More Dietitians and Nutritionists Nearby

Photo of Elena Usdenski, Nutritionist/Dietitian, RD, MScFN
Elena Usdenski
Nutritionist/Dietitian, RD, MScFN
Online Only
I work virtually with motivated individuals or couples (in Ontario) who are actively trying to conceive or planning for pregnancy. They seek evidence-based information and personalized guidance to optimize their fertility and prenatal nutrition. With concerns about their current diet, lifestyle choices, or specific medical conditions, they are driven to provide the best start for their future child. They value the role of nutrition in this process and are open to making positive changes. Ultimately, their goal is to create a healthy, nurturing environment for their little one to thrive.
I work virtually with motivated individuals or couples (in Ontario) who are actively trying to conceive or planning for pregnancy. They seek evidence-based information and personalized guidance to optimize their fertility and prenatal nutrition. With concerns about their current diet, lifestyle choices, or specific medical conditions, they are driven to provide the best start for their future child. They value the role of nutrition in this process and are open to making positive changes. Ultimately, their goal is to create a healthy, nurturing environment for their little one to thrive.
(226) 741-0136 View (226) 741-0136
Photo of Michaela Marie Harron, Nutritionist/Dietitian, MSc, RD
Michaela Marie Harron
Nutritionist/Dietitian, MSc, RD
1 Endorsed
Serves Area
I specialize in gut health (specifically IBS and am skilled in the low FODMAP diet), as well as Eating Disorders.
I am passionate about helping individuals make peace with food and reduce the stress around food. I believe in supporting the mental aspect of nourishment, as well as building sustainable habits to support wellness. No quick-fixes, but building a set of life-long skills to enhance your confidence with making food decisions that best support your needs. I practice using Intuitive Eating and HAES frameworks, and believe that every body shape and size is worthy. In my sessions, I incorporate body image work and tools to improve your relationship with food.
I specialize in gut health (specifically IBS and am skilled in the low FODMAP diet), as well as Eating Disorders.
I am passionate about helping individuals make peace with food and reduce the stress around food. I believe in supporting the mental aspect of nourishment, as well as building sustainable habits to support wellness. No quick-fixes, but building a set of life-long skills to enhance your confidence with making food decisions that best support your needs. I practice using Intuitive Eating and HAES frameworks, and believe that every body shape and size is worthy. In my sessions, I incorporate body image work and tools to improve your relationship with food.
(249) 209-8367 View (249) 209-8367

Online Dietitians and Nutritionists

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 Jean LaMantia, Nutritionist/Dietitian, BASc, RD
Jean LaMantia
Nutritionist/Dietitian, BASc, RD
Online Only
You’re looking for a dietitian who truly listens. You want space to explain what you’ve tried, what worked, and what didn’t—without being rushed or dismissed. You may be dealing with something complex, like cancer, lymphedema, or lipedema, and want guidance that makes sense for your body and your situation. You don’t want a generic plan—you want to understand why recommendations matter so you can make confident choices. I help you turn confusion into a clear, practical app
You’re looking for a dietitian who truly listens. You want space to explain what you’ve tried, what worked, and what didn’t—without being rushed or dismissed. You may be dealing with something complex, like cancer, lymphedema, or lipedema, and want guidance that makes sense for your body and your situation. You don’t want a generic plan—you want to understand why recommendations matter so you can make confident choices. I help you turn confusion into a clear, practical app
(647) 952-9644 View (647) 952-9644
Photo of Joanne Zhou, Nutritionist/Dietitian, CDE
Joanne Zhou
Nutritionist/Dietitian, CDE
Online Only
Reach out to me if you want to learn more about how I can help with your digestive issues.
I work with clients that are either are newly diagnosed with IBS or have had IBS for a while and just starting to get a handle on it. They may need support learning to manage it from beginning to end or just need a little support and feedback. In the end, I work with clients on their goals based on where they are at and need. I take a techy-approach using app-based food logs and messaging.
Reach out to me if you want to learn more about how I can help with your digestive issues.
I work with clients that are either are newly diagnosed with IBS or have had IBS for a while and just starting to get a handle on it. They may need support learning to manage it from beginning to end or just need a little support and feedback. In the end, I work with clients on their goals based on where they are at and need. I take a techy-approach using app-based food logs and messaging.
(437) 476-2674 View (437) 476-2674
Photo of Michaela Harron, Nutritionist/Dietitian, RD
Michaela Harron
Nutritionist/Dietitian, RD
1 Endorsed
Online Only
Whether you’re struggling with digestive issues like IBS, managing disordered eating, or navigating weight concerns, my goal is to provide personalized, practical strategies that empower you to feel in control of your well-being.
Having personally experienced the challenges of IBS, I know how transformative it can be to understand what works for your body. My approach is grounded in evidence-based care, designed to meet you where you are and help you create lasting change—no quick fixes, just meaningful progress.
Whether you’re struggling with digestive issues like IBS, managing disordered eating, or navigating weight concerns, my goal is to provide personalized, practical strategies that empower you to feel in control of your well-being.
Having personally experienced the challenges of IBS, I know how transformative it can be to understand what works for your body. My approach is grounded in evidence-based care, designed to meet you where you are and help you create lasting change—no quick fixes, just meaningful progress.
(365) 536-1605 View (365) 536-1605
Photo of Jackie Silver, Nutritionist/Dietitian, MHSc, RD
Jackie Silver
Nutritionist/Dietitian, MHSc, RD
Online Only
We can work on the following areas together: Meal prep and planning skills that work with executive dysfunction and/or food aversions, stress or binge-eating, digestive health (constipation, IBS), eating with low appetite, picky eating and diet expansion, ARFID, malnutrition, and mindful eating skills (listening to internal hunger/fullness cues and more).
Hello there! I’m Jackie and I see clients 1:1 in my virtual private practice. My populations of expertise include neurodivergent kids, teens, and adults (Autism Spectrum Disorder, ADHD, intellectual/developmental disabilities), and physically disabled clients (such as Spinal Cord Injury, Spina Bifida, Cerebral Palsy). I am passionate about tailoring nutrition recommendations to neurodiverse clients that focus on their strengths and abilities. I’ve worked with people of all ages and ability levels in achieving their health and nutrition goals with a weight-inclusive, neuro-affirming approach. I'd be thrilled to support you!
We can work on the following areas together: Meal prep and planning skills that work with executive dysfunction and/or food aversions, stress or binge-eating, digestive health (constipation, IBS), eating with low appetite, picky eating and diet expansion, ARFID, malnutrition, and mindful eating skills (listening to internal hunger/fullness cues and more).
Hello there! I’m Jackie and I see clients 1:1 in my virtual private practice. My populations of expertise include neurodivergent kids, teens, and adults (Autism Spectrum Disorder, ADHD, intellectual/developmental disabilities), and physically disabled clients (such as Spinal Cord Injury, Spina Bifida, Cerebral Palsy). I am passionate about tailoring nutrition recommendations to neurodiverse clients that focus on their strengths and abilities. I’ve worked with people of all ages and ability levels in achieving their health and nutrition goals with a weight-inclusive, neuro-affirming approach. I'd be thrilled to support you!
(647) 496-6053 View (647) 496-6053
Photo of Tala Shamia, Nutritionist/Dietitian, RD
Tala Shamia
Nutritionist/Dietitian, RD
2 Endorsed
Online Only
As a Registered Dietitian specializing in sports nutrition and eating disorders, my approach is to optimize athletic performance, address disordered eating behaviors, and support individuals in achieving their goals, all while using intuitive and mindful eating approaches. Coming from a multicultural background and being an immigrant to Canada, I bring a unique perspective that recognizes and respects various dietary practices and cultural food traditions. Having gone through my own personal health journey, I vividly remember the first time I saw a registered dietitian myself and left feeling unheard.
As a Registered Dietitian specializing in sports nutrition and eating disorders, my approach is to optimize athletic performance, address disordered eating behaviors, and support individuals in achieving their goals, all while using intuitive and mindful eating approaches. Coming from a multicultural background and being an immigrant to Canada, I bring a unique perspective that recognizes and respects various dietary practices and cultural food traditions. Having gone through my own personal health journey, I vividly remember the first time I saw a registered dietitian myself and left feeling unheard.
(289) 670-3432 View (289) 670-3432
Photo of Julie Mancuso - JM Nutrition, Nutritionist/Dietitian
JM Nutrition
Nutritionist/Dietitian
Toronto, ON M4X
Our highly personalized service receives high praise from our clients who come to us from all walks of life for matters pertaining to weight loss, digestive health, disease management, sports nutrition & more.
We offer personalized, thorough and supportive nutritional counselling sessions with an educational component, often creating customized meal plans that are based on the foods you enjoy eating, sensitivities, goals, lifestyle, religious and cultural restrictions, and of course, your budget. Our detailed meal plans offer structure and eliminate guesswork.
Our highly personalized service receives high praise from our clients who come to us from all walks of life for matters pertaining to weight loss, digestive health, disease management, sports nutrition & more.
We offer personalized, thorough and supportive nutritional counselling sessions with an educational component, often creating customized meal plans that are based on the foods you enjoy eating, sensitivities, goals, lifestyle, religious and cultural restrictions, and of course, your budget. Our detailed meal plans offer structure and eliminate guesswork.
(437) 500-6233 View (437) 500-6233
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 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 Anna Prestia, Nutritionist/Dietitian, RD
Anna Prestia
Nutritionist/Dietitian, RD
1 Endorsed
Oakville, ON L6J
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) 302-8389 View (289) 302-8389
Photo of Niloufar (Nilou) Deilami, Nutritionist/Dietitian, MPH, RD
Niloufar (Nilou) Deilami
Nutritionist/Dietitian, MPH, RD
1 Endorsed
Online Only
I support clients with the following: PCOS, digestive diseases (IBS, IBD, reflux, celiac), heart disease (cholesterol, blood pressure), fertility, pregnancy, pre-diabetes and diabetes, and general healthy eating.
I use a combination clinical expertise, education, behaviour change strategies, and empathy to help you reach your goals. My approach is personalized, culturally sensitive, and compassionate. My goal is to create a safe space for you to share your concerns and work towards your goals.
I support clients with the following: PCOS, digestive diseases (IBS, IBD, reflux, celiac), heart disease (cholesterol, blood pressure), fertility, pregnancy, pre-diabetes and diabetes, and general healthy eating.
I use a combination clinical expertise, education, behaviour change strategies, and empathy to help you reach your goals. My approach is personalized, culturally sensitive, and compassionate. My goal is to create a safe space for you to share your concerns and work towards your goals.
(289) 807-4265 View (289) 807-4265
Photo of Jessica Zupan, Nutritionist/Dietitian, RD
Jessica Zupan
Nutritionist/Dietitian, RD
1 Endorsed
Toronto, ON M5R
If you are feeling stuck, overwhelmed, or restricted by food rules, I can help you improve your relationship with food. Many people I work with say, “I know what to do around food but just can’t do it". Whether navigating disordered eating or emotional eating, or managing a health condition such as PCOS or diabetes, this is a safe place to explore your challenges and know you are not alone.
If you are feeling stuck, overwhelmed, or restricted by food rules, I can help you improve your relationship with food. Many people I work with say, “I know what to do around food but just can’t do it". Whether navigating disordered eating or emotional eating, or managing a health condition such as PCOS or diabetes, this is a safe place to explore your challenges and know you are not alone.
(647) 249-7962 View (647) 249-7962
Photo of Julia Stanislavskaia, Nutritionist/Dietitian, RD, MScFN, BSc
Julia Stanislavskaia
Nutritionist/Dietitian, RD, MScFN, BSc
1 Endorsed
Toronto, ON M5G
If you are feeling unwell due to digestive symptoms, inflammation, fatigue, migraines, discomfort with your body and weight or mental health issues and feel that your problems may be related to food, contact me to explore how I can help you.
My main areas of expertise are digestive diseases (reflux, IBS, Crohn's, colitis and celiac), infant feeding, eating disorders in children and adults, mental health, weight management, heart health (high cholesterol, high blood pressure), anaemia and other nutrient deficiencies, vegetarian and vegan diets.
If you are feeling unwell due to digestive symptoms, inflammation, fatigue, migraines, discomfort with your body and weight or mental health issues and feel that your problems may be related to food, contact me to explore how I can help you.
My main areas of expertise are digestive diseases (reflux, IBS, Crohn's, colitis and celiac), infant feeding, eating disorders in children and adults, mental health, weight management, heart health (high cholesterol, high blood pressure), anaemia and other nutrient deficiencies, vegetarian and vegan diets.
(647) 371-5843 View (647) 371-5843
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 Allysa Solberg, Nutritionist/Dietitian, RD, MAN
Allysa Solberg
Nutritionist/Dietitian, RD, MAN
Online Only
Are you ready to unlock the transformative power of food for your health and well-being? I’m here to support your nutrition journey with personalized virtual consultations tailored to your lifestyle and goals. I specialize in nutrition for managing IBS, high cholesterol, high blood pressure, and cardiovascular conditions. Additionally, I offer guidance in reproductive health and fertility nutrition. Whether you're seeking to address specific health concerns or simply aiming to embrace a healthier lifestyle, I’m here to help you boost your energy, health, and overall well-being.
Are you ready to unlock the transformative power of food for your health and well-being? I’m here to support your nutrition journey with personalized virtual consultations tailored to your lifestyle and goals. I specialize in nutrition for managing IBS, high cholesterol, high blood pressure, and cardiovascular conditions. Additionally, I offer guidance in reproductive health and fertility nutrition. Whether you're seeking to address specific health concerns or simply aiming to embrace a healthier lifestyle, I’m here to help you boost your energy, health, and overall well-being.
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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
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.