Irritable Bowel Syndrome (IBS) Nutritionists and Dietitians in L3V

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More Dietitians and Nutritionists Nearby

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 Kate Young, Nutritionist/Dietitian, BASc, BComm, RD
Kate Young
Nutritionist/Dietitian, BASc, BComm, RD
2 Endorsed
Online Only
I have experience working with clients on a wide variety of health conditions (e.g. heart health, digestive health (e.g. IBS), fatty liver disease, pre-diabetes and type 2 diabetes).
Are you tired of dieting, food guilt, and constantly thinking about what you “should” eat? I help women move away from restrictive eating and build a more peaceful, trusting relationship with food through a weight-inclusive, HAES-aligned approach. Together, we’ll work on intuitive eating, sustainable habits, and nutrition that supports your health without shame or rigid rules. I also enjoy supporting clients managing conditions like ADHD, diabetes, PCOS, digestive concerns, high cholesterol, and other chronic health conditions.
I have experience working with clients on a wide variety of health conditions (e.g. heart health, digestive health (e.g. IBS), fatty liver disease, pre-diabetes and type 2 diabetes).
Are you tired of dieting, food guilt, and constantly thinking about what you “should” eat? I help women move away from restrictive eating and build a more peaceful, trusting relationship with food through a weight-inclusive, HAES-aligned approach. Together, we’ll work on intuitive eating, sustainable habits, and nutrition that supports your health without shame or rigid rules. I also enjoy supporting clients managing conditions like ADHD, diabetes, PCOS, digestive concerns, high cholesterol, and other chronic health conditions.
(548) 901-0446 View (548) 901-0446
Photo of Julia Stanislavskaia, Nutritionist/Dietitian, RD, MScFN, BSc
Julia Stanislavskaia
Nutritionist/Dietitian, RD, MScFN, BSc
1 Endorsed
Serves Area
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. I counsel on a wide variety of health issues from food sensitivities and eating disorders to weight management and heart health, among others. I work with people of all ages and have extensive experience in assessing and supporting complex patients with multiple conditions.
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. I counsel on a wide variety of health issues from food sensitivities and eating disorders to weight management and heart health, among others. I work with people of all ages and have extensive experience in assessing and supporting complex patients with multiple conditions.
(647) 371-5843 View (647) 371-5843
Photo of Jenna Zaika, Nutritionist/Dietitian, BASc, RD
Jenna Zaika
Nutritionist/Dietitian, BASc, RD
Serves Area
My mission is to support you in finding ways to nourish your body AND your soul, while incorporating all of the foods that bring you joy. I use a warm, weight-inclusive, compassionate, and refreshing approach. If you have lost the joy of eating, are tired of restricting foods (especially the ones you love!), dieting, adhering to ‘food rules’, counting calories, weighing yourself, and doing exercises that you dread, it may be time to try a new and refreshing approach. Covered by many health benefit plans. We also now have a therapist on our team! Collaborative care can go a long way in helping to heal your relationship with food.
My mission is to support you in finding ways to nourish your body AND your soul, while incorporating all of the foods that bring you joy. I use a warm, weight-inclusive, compassionate, and refreshing approach. If you have lost the joy of eating, are tired of restricting foods (especially the ones you love!), dieting, adhering to ‘food rules’, counting calories, weighing yourself, and doing exercises that you dread, it may be time to try a new and refreshing approach. Covered by many health benefit plans. We also now have a therapist on our team! Collaborative care can go a long way in helping to heal your relationship with food.
(226) 407-7604 View (226) 407-7604
Photo of Anna Prestia, Nutritionist/Dietitian, RD
Anna Prestia
Nutritionist/Dietitian, RD
Barrie, ON L4N
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 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 Vanessa Hurley - CBT Wellness & Virtual Services, Nutritionist/Dietitian, RD
CBT Wellness & Virtual Services
Nutritionist/Dietitian, RD
4 Endorsed
Online Only
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, recover 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 baby? You have come to the right place-we can help you reach your goals! We provide personalized nutrition care + meal plans tailored to your unique lifestyle & food preferences.
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, recover 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 baby? You have come to the right place-we can help you reach your goals! We provide personalized nutrition care + meal plans tailored to your unique lifestyle & food preferences.
(289) 312-3565 View (289) 312-3565

Online Dietitians and Nutritionists

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 Michaela Marie Harron, Nutritionist/Dietitian, MSc, RD
Michaela Marie Harron
Nutritionist/Dietitian, MSc, RD
1 Endorsed
Collingwood, ON L9Y
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
Photo of Julie Mancuso - JM Nutrition, Nutritionist/Dietitian
JM Nutrition
Nutritionist/Dietitian
Toronto, ON M4X
JM Nutrition is a nutritional counselling service by a diverse team of nutritionists and dietitians, each with their own areas of expertise and specialization. As a result, we are well-equipped to meet your exact needs, goals and preferences. Our team of nutritionists and registered dietitians regularly lend their expertise to national and international media outlets on numerous nutrition, health, wellness and fitness topics. 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.
JM Nutrition is a nutritional counselling service by a diverse team of nutritionists and dietitians, each with their own areas of expertise and specialization. As a result, we are well-equipped to meet your exact needs, goals and preferences. Our team of nutritionists and registered dietitians regularly lend their expertise to national and international media outlets on numerous nutrition, health, wellness and fitness topics. 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.
(437) 500-6233 View (437) 500-6233
Photo of Catherine Lin, Nutritionist/Dietitian, RD, CDE
Catherine Lin
Nutritionist/Dietitian, RD, CDE
4 Endorsed
Toronto, ON M1T
Accepting NEW patients for phone & video sessions-immediate openings! Are you tired of yo-yo dieting and constantly thinking about food? Do you want to ditch dieting for good and gain food freedom? Are you confused about what to eat? Do you want to break the cycle of overeating? We can work together to achieve your best weight and health using science based treatment and tools. I provide nutrition counselling in obesity management, diabetes management, digestive health, and chronic disease prevention and management. I have years of experience with helping individuals with making sustainable lifestyle changes.
Accepting NEW patients for phone & video sessions-immediate openings! Are you tired of yo-yo dieting and constantly thinking about food? Do you want to ditch dieting for good and gain food freedom? Are you confused about what to eat? Do you want to break the cycle of overeating? We can work together to achieve your best weight and health using science based treatment and tools. I provide nutrition counselling in obesity management, diabetes management, digestive health, and chronic disease prevention and management. I have years of experience with helping individuals with making sustainable lifestyle changes.
(289) 312-2924 View (289) 312-2924
Photo of Anna Prestia, Nutritionist/Dietitian, RD
Anna Prestia
Nutritionist/Dietitian, RD
Markham, ON L3R
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 believe in making realistic & attainable goals that are specific to you. Every nutrition plan I recommend is unique & tailored to each individual depending on their goals, lifestyles and timelines. I take time to understand your experiences, health needs & relationship with food. I teach you the tools needed to succeed in your personal nutritional goals.
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 believe in making realistic & attainable goals that are specific to you. Every nutrition plan I recommend is unique & tailored to each individual depending on their goals, lifestyles and timelines. I take time to understand your experiences, health needs & relationship with food. I teach you the tools needed to succeed in your personal nutritional goals.
(289) 276-7737 View (289) 276-7737
Photo of Terence Boateng, Nutritionist/Dietitian, MHSc, RD, CSEP-CE
Terence Boateng
Nutritionist/Dietitian, MHSc, RD, CSEP-CE
Toronto, ON M5X
Terence specializes in three key areas of practice: weight management (including weight loss, muscle gain, and body composition goals); sports nutrition (helping athletes and active individuals fuel for peak performance); and digestive health (addressing conditions like IBS, food intolerances, and gut health).
Terence is a Registered Dietitian in Toronto who provides evidence-based nutrition counselling that is client-centered, goal-oriented, and tailored to your unique needs. During the initial assessment, he takes the time to understand your specific objectives, lifestyle, and challenges, using this information to co-create a practical and sustainable plan that works for you. Whether you’re an athlete aiming to optimize performance, someone managing digestive health issues, or simply looking to improve your overall well-being, Terence’s approach is personalized, flexible, and rooted in the latest scientific research.
Terence specializes in three key areas of practice: weight management (including weight loss, muscle gain, and body composition goals); sports nutrition (helping athletes and active individuals fuel for peak performance); and digestive health (addressing conditions like IBS, food intolerances, and gut health).
Terence is a Registered Dietitian in Toronto who provides evidence-based nutrition counselling that is client-centered, goal-oriented, and tailored to your unique needs. During the initial assessment, he takes the time to understand your specific objectives, lifestyle, and challenges, using this information to co-create a practical and sustainable plan that works for you. Whether you’re an athlete aiming to optimize performance, someone managing digestive health issues, or simply looking to improve your overall well-being, Terence’s approach is personalized, flexible, and rooted in the latest scientific research.
(647) 699-5345 View (647) 699-5345
Photo of Sandra Edwards, Nutritionist/Dietitian, RD, CLT
Sandra Edwards
Nutritionist/Dietitian, RD, CLT
Markham, ON L3R
Additional services for those struggling with irritable bowel syndrome, fibromyalgia or migraines with the MRT test and the LEAP - immunocalm diet.
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.
Additional services for those struggling with irritable bowel syndrome, fibromyalgia or migraines with the MRT test and the LEAP - immunocalm diet.
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 Misha Roy - CBT Wellness & Virtual Services, Nutritionist/Dietitian, RD
CBT Wellness & Virtual Services
Nutritionist/Dietitian, RD
1 Endorsed
Brampton, ON L6Y
Accepting NEW clients. Do you want more energy, less stress around food & more confidence that what you eat is truly supporting your health? Are you struggling in managing diabetes, digestive issues, or food intolerances? Are you having difficulty navigating weight changes, pregnancy, postpartum recovery or building strength for sports and fitness? Maybe you're balancing complex needs like food allergies, hypertension, or diabetes. You're in the right place & we can help. Our dietitians have 15+ years of experience helping individuals & families find realistic, enjoyable & sustainable ways to eat well without strict diets.
Accepting NEW clients. Do you want more energy, less stress around food & more confidence that what you eat is truly supporting your health? Are you struggling in managing diabetes, digestive issues, or food intolerances? Are you having difficulty navigating weight changes, pregnancy, postpartum recovery or building strength for sports and fitness? Maybe you're balancing complex needs like food allergies, hypertension, or diabetes. You're in the right place & we can help. Our dietitians have 15+ years of experience helping individuals & families find realistic, enjoyable & sustainable ways to eat well without strict diets.
(365) 799-6873 View (365) 799-6873
Photo of Vanessa Hurley, Nutritionist/Dietitian, RD
Vanessa Hurley
Nutritionist/Dietitian, RD
6 Endorsed
Mississauga, ON L5N
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 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 Lise Leahy, Nutritionist/Dietitian, RD, CDE, BScFdSc
Lise Leahy
Nutritionist/Dietitian, RD, CDE, BScFdSc
1 Endorsed
Peterborough, ON K9H
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?
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?
(249) 294-0597 View (249) 294-0597
Photo of Catherine Lin Rd, Nutritionist/Dietitian, RD
Catherine Lin Rd
Nutritionist/Dietitian, RD
5 Endorsed
Markham, ON L3R
Accepting NEW patients-immediate openings! Are you tired of yo-yo dieting and constantly thinking about food? Do you want to ditch dieting for good and gain food freedom? Are you confused about what to eat? Do you want to break the cycle of overeating? We can work together to achieve your best weight and health using science based treatment and tools. I provide nutrition counselling in obesity management, diabetes management, digestive health, and chronic disease prevention and management. I have years of experience with helping individuals with making sustainable lifestyle changes.
Accepting NEW patients-immediate openings! Are you tired of yo-yo dieting and constantly thinking about food? Do you want to ditch dieting for good and gain food freedom? Are you confused about what to eat? Do you want to break the cycle of overeating? We can work together to achieve your best weight and health using science based treatment and tools. I provide nutrition counselling in obesity management, diabetes management, digestive health, and chronic disease prevention and management. I have years of experience with helping individuals with making sustainable lifestyle changes.
(289) 312-4847 View (289) 312-4847
Photo of Norine Khalil, Nutritionist/Dietitian, MSc, RD
Norine Khalil
Nutritionist/Dietitian, MSc, RD
Oakville, ON L6H
If you've been struggling with feeling okay, but wanting to feel great, you've come to the right place. Hello! My name is Norine and I'm a Registered Dietitian and nutrition consultant. I have a strong passion for supporting those who are struggling with creating a personalized version of "healthy eating" in finding their happy place with food. Whether you're struggling with a recently diagnosed chronic disease, going through a life transition, or feeling a complete lack of energy and motivation, my goal is to support you on a path to better health.
If you've been struggling with feeling okay, but wanting to feel great, you've come to the right place. Hello! My name is Norine and I'm a Registered Dietitian and nutrition consultant. I have a strong passion for supporting those who are struggling with creating a personalized version of "healthy eating" in finding their happy place with food. Whether you're struggling with a recently diagnosed chronic disease, going through a life transition, or feeling a complete lack of energy and motivation, my goal is to support you on a path to better health.
(289) 302-0467 View (289) 302-0467
Photo of Misha Roy - CBT Wellness and Virtual Services, Nutritionist/Dietitian, RD
CBT Wellness and Virtual Services
Nutritionist/Dietitian, RD
1 Endorsed
Mississauga, ON L4T
Accepting NEW clients. Imagine your ideal health journey-You want more energy, less stress around food, and confidence that what you eat is truly supporting your health. Maybe you’re managing diabetes, digestive issues, or food intolerances. Perhaps you’re navigating weight changes, pregnancy, postpartum recovery, or building strength for sports and fitness. You may even be balancing complex needs like food allergies, hypertension, or diabetes. This is where we can help. Our dietitians have 15+ years of experience helping individuals & families find realistic, enjoyable & sustainable ways to eat well without strict diets.
Accepting NEW clients. Imagine your ideal health journey-You want more energy, less stress around food, and confidence that what you eat is truly supporting your health. Maybe you’re managing diabetes, digestive issues, or food intolerances. Perhaps you’re navigating weight changes, pregnancy, postpartum recovery, or building strength for sports and fitness. You may even be balancing complex needs like food allergies, hypertension, or diabetes. This is where we can help. Our dietitians have 15+ years of experience helping individuals & families find realistic, enjoyable & sustainable ways to eat well without strict diets.
(289) 275-4567 View (289) 275-4567
Irritable Bowel Syndrome (IBS) Nutritionists and Dietitians
What is Irritable Bowel Syndrome (IBS)?
Irritable bowel syndrome (IBS) is a general term that refers to a collection of symptoms associated with poor gut mobility and function, including abdominal pain, bloating, gas, and diarrhea. IBS is very common, with some estimates suggesting that as many as 10-15% of adults within the United States have IBS. Although the two conditions sound similar and share many symptoms, such as abdominal pain and diarrhea, IBS differs from irritable bowel diseases (IBDs), such as ulcerative colitis and Crohn's disease. In contrast to IBS which is caused by issues in the functioning of the colon, IBDs are inflammatory conditions caused by overactive immune cells within the intestine. IBDs are much less common than IBS and typically more medically severe, occasionally requiring intensive medical treatment and/or surgery. IBS, in contrast, can usually be managed effectively with lifestyle changes and less intense medical intervention.

What are the subcategories of IBS?
Medical professionals generally identify four main types of IBS: IBS-C (constipation-predominant subtype), IBS-D (diarrhea-predominant subtype), IBS-M (mixed bowel subtype), and IBS-U (undefined subtype). Identifying the predominant type of IBS an individual has can be important for determining the type of treatment that is best for them, such as the lifestyle and dietary changes that may be most appropriate, as well as any medications that may be necessary. However, individuals may also experience multiple subtypes over time, as well as experience cycles of flare-ups and symptom relief.

What causes IBS?
The causes of IBS are not well understood, but symptoms are generally attributed to issues with gut muscle contraction and changes in the gut microbiome, both of which can lead to the characteristic symptoms of IBS. These issues can be caused by a variety of lifestyle factors, such as diet and stress. While lifestyle modifications may not completely cure IBS symptoms, identifying symptom-triggering foods, consuming a balanced diet, and reducing stress have all been shown to greatly reduce symptoms. IBS can also be caused by bacterial or parasitic infections within the intestine, in which case the syndrome is referred to as "post-infectious IBS." In contrast to non-infectious IBS, post-infectious IBS is less chronic in nature and symptoms will often resolve once the infection has subsided.

What foods should I avoid if I have IBS?
Specific foods that may trigger symptoms of IBS can vary person-to-person. However, common foods that may exacerbate symptoms include high-fat foods (such as fatty meats), wheat, dairy products, highly acidic foods (such as citrus), beans, cabbage, milk, and carbonated drinks. Over time, individuals with IBS are often able to identify which foods cause their symptoms to worsen and learn to avoid such foods to manage their symptoms.