Gastrointestinal (GI) Nutritionists and Dietitians in Newmarket, ON
Elke Sengmueller
Nutritionist/Dietitian, RD, RN, BASc, BScN
Newmarket, ON L3Y
Waitlist for new clients
Specialties: Digestive disorders (IBS, Crohn's Disease, Colitis, Celiac disease, Constipation, Reflux/GERD), Eating Disorders, Body Image Issues, Mental Health, Emotional Eating, Intuitive Eating, Picky Eaters, & Enteral Nutrition (tube-feeding).
ALERT: Wait list CLOSED until August. N.B.: I do NOT offer weight loss counselling. I have worked over 25 years caring for Surgery, ICU, Gastroenterology, Paediatrics (newborn to teens), Eating Disorders (all ages), and Mental Health/Addictions/Trauma clients. I use my extensive clinical experience and current evidence-based research, combined with a compassionate and non-judgmental approach, to help motivated clients improve their physical and emotional health, while mending their relationship with food. I am also a Registered Nurse, which enhances my ability to provide comprehensive care.
Specialties: Digestive disorders (IBS, Crohn's Disease, Colitis, Celiac disease, Constipation, Reflux/GERD), Eating Disorders, Body Image Issues, Mental Health, Emotional Eating, Intuitive Eating, Picky Eaters, & Enteral Nutrition (tube-feeding).
ALERT: Wait list CLOSED until August. N.B.: I do NOT offer weight loss counselling. I have worked over 25 years caring for Surgery, ICU, Gastroenterology, Paediatrics (newborn to teens), Eating Disorders (all ages), and Mental Health/Addictions/Trauma clients. I use my extensive clinical experience and current evidence-based research, combined with a compassionate and non-judgmental approach, to help motivated clients improve their physical and emotional health, while mending their relationship with food. I am also a Registered Nurse, which enhances my ability to provide comprehensive care.
I'm Danielle, Registered Holistic Nutritionist and my 1-1 program uses functional lab testing and personalized protocols to uncover the real imbalances disrupting your gut, hormones, and metabolism.
For too many years, I had terrible periods, hypothyroidism and a long list of gut issues. Fast forward to today, these are my areas of specialty and what I'm most passionate about because I know how much these issues disrupt your life. Together, we'll uncover the root causes of your symptoms so that you're not stuck with short term, Band aid solutions.
I'm Danielle, Registered Holistic Nutritionist and my 1-1 program uses functional lab testing and personalized protocols to uncover the real imbalances disrupting your gut, hormones, and metabolism.
For too many years, I had terrible periods, hypothyroidism and a long list of gut issues. Fast forward to today, these are my areas of specialty and what I'm most passionate about because I know how much these issues disrupt your life. Together, we'll uncover the root causes of your symptoms so that you're not stuck with short term, Band aid solutions.
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.
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.
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.
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.
Christine Duguay is a registered dietitian and child nutrition expert. She has over 10 years of experience helping preterm infants, babies, toddlers, children, and teenagers achieve their nutrition goals. As a mom of two energetic boys, Christine understands that feeding your child can sometimes be challenging and is here to help with realistic, evidence-based, and personal nutritional advice centered around the needs of your child and family.
Christine Duguay is a registered dietitian and child nutrition expert. She has over 10 years of experience helping preterm infants, babies, toddlers, children, and teenagers achieve their nutrition goals. As a mom of two energetic boys, Christine understands that feeding your child can sometimes be challenging and is here to help with realistic, evidence-based, and personal nutritional advice centered around the needs of your child and family.
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.
Our dietitians have experience working with infants, children, teenagers, adults & seniors with a variety of issues like weight loss/gain, diabetes, digestive issues, infant feeding, picky eating, eating disorders, high cholesterol, allergies/dietary restrictions/concerns, vegan/vegetarian diets, celiac disease, diabetes, prenatal/pregnancy/post partum etc.
NEW patients welcome! Do you need help managing your chronic health diseases such as diabetes, hypertension, cardiovascular disease or obesity? Is your goal to lower your high blood sugar, blood pressure, cholesterol or weight? Do you want to improve your overall relationship with food, heal from an eating disorder, boost your energy levels or feel more confident in your body? Are you overwhelmed or unsure how to introduce solids or allergens to your infant or deal with picky eating? We can help you reach your goals! We also create personalized nutrition care & meal plans tailored to your unique lifestyle & food preferences.
Our dietitians have experience working with infants, children, teenagers, adults & seniors with a variety of issues like weight loss/gain, diabetes, digestive issues, infant feeding, picky eating, eating disorders, high cholesterol, allergies/dietary restrictions/concerns, vegan/vegetarian diets, celiac disease, diabetes, prenatal/pregnancy/post partum etc.
NEW patients welcome! Do you need help managing your chronic health diseases such as diabetes, hypertension, cardiovascular disease or obesity? Is your goal to lower your high blood sugar, blood pressure, cholesterol or weight? Do you want to improve your overall relationship with food, heal from an eating disorder, boost your energy levels or feel more confident in your body? Are you overwhelmed or unsure how to introduce solids or allergens to your infant or deal with picky eating? We can help you reach your goals! We also create personalized nutrition care & meal plans tailored to your unique lifestyle & food preferences.
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.
More Dietitians and Nutritionists Nearby
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.
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.
My mission is to provide comprehensive and compassionate support for children and families impacted by digestive troubles to find symptom relief and food freedom.
Do you feel hopeless when it comes to figuring out how to tame your child’s tummy troubles? Confused about what foods to offer? Finding conflicting information everywhere? Feel lost, overwhelmed and don’t know where to start? You do not have to navigate this journey alone - we are here to help!
My mission is to provide comprehensive and compassionate support for children and families impacted by digestive troubles to find symptom relief and food freedom.
Do you feel hopeless when it comes to figuring out how to tame your child’s tummy troubles? Confused about what foods to offer? Finding conflicting information everywhere? Feel lost, overwhelmed and don’t know where to start? You do not have to navigate this journey alone - we are here to help!
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.
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.
I provide expertise with issues affecting weight gain, growth, digestive health in babies, children and teens.
Parents worry that their child is not getting the nutrition needed for healthy growth . A wide range an issues can cause children to lack proper nutrition: selective eating, food aversions, medical issues impacting digestion, ability to swallow, reflux, food intolerances and allergies, eating disorders, ASD and limited food repertoire.
Do you have a baby with feeding issues?
Are mealtimes stressful at your house ? Do you just want to be able to sit down and enjoy a meal with your children?
I provide expertise with issues affecting weight gain, growth, digestive health in babies, children and teens.
Parents worry that their child is not getting the nutrition needed for healthy growth . A wide range an issues can cause children to lack proper nutrition: selective eating, food aversions, medical issues impacting digestion, ability to swallow, reflux, food intolerances and allergies, eating disorders, ASD and limited food repertoire.
Do you have a baby with feeding issues?
Are mealtimes stressful at your house ? Do you just want to be able to sit down and enjoy a meal with your children?
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.
My clients want to reduce pain and anxiety from chronic inflammation or digestive issues to improve their quality of life by controlling their symptoms naturally without the unwanted side effects of medications
I help individuals with inflammatory, hormonal and digestive issues including autoimmune conditions by coaching them on how to optimize their health and well-being through functional nutrition and lifestyle modifications
My clients want to reduce pain and anxiety from chronic inflammation or digestive issues to improve their quality of life by controlling their symptoms naturally without the unwanted side effects of medications
I help individuals with inflammatory, hormonal and digestive issues including autoimmune conditions by coaching them on how to optimize their health and well-being through functional nutrition and lifestyle modifications
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.
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.
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.
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.
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.