Irritable Bowel Syndrome (IBS) Nutritionists and Dietitians in Mchenry County, IL

Photo of Mia Greco - Olive Branch Nutrition, Nutritionist/Dietitian, MS, MPH, RD, LDN
Olive Branch Nutrition
Nutritionist/Dietitian, MS, MPH, RD, LDN
Crystal Lake, IL 60014
We treat people suffering from a variety of eating disorders as well as general weight inclusive medical nutrition therapy for a variety of disease states (Diabetes, CKD, Diverticulosis, Hyperlipidemia, IBS, PCOS, Gastroparesis etc).
Our mission is to provide weight inclusive medical nutrition therapy, using the principles of Intuitive Eating in a HAES aligned practice. The intent of our counseling is to help people find peace with food freedom, develop a healthy relationship with food and their bodies, and focus on gentle nutrition to manage and prevent chronic disease states.
We treat people suffering from a variety of eating disorders as well as general weight inclusive medical nutrition therapy for a variety of disease states (Diabetes, CKD, Diverticulosis, Hyperlipidemia, IBS, PCOS, Gastroparesis etc).
Our mission is to provide weight inclusive medical nutrition therapy, using the principles of Intuitive Eating in a HAES aligned practice. The intent of our counseling is to help people find peace with food freedom, develop a healthy relationship with food and their bodies, and focus on gentle nutrition to manage and prevent chronic disease states.
(224) 218-5362 View (224) 218-5362
Photo of Rachael Costello, Nutritionist/Dietitian, MS, RDN, LDN
Rachael Costello
Nutritionist/Dietitian, MS, RDN, LDN
Online Only
I specialize in digestive issues and am trained in the use of the low FODMAP diet for IBS through Monash University.
I have been a registered dietitian nutritionist for 20 years. I have a Master's of Science in Applied Nutrition, a Bachelor of Arts in Dietetics, and years of practice in nutrition, and I am a member of the Academy of Nutrition and Dietetics.
I specialize in digestive issues and am trained in the use of the low FODMAP diet for IBS through Monash University.
I have been a registered dietitian nutritionist for 20 years. I have a Master's of Science in Applied Nutrition, a Bachelor of Arts in Dietetics, and years of practice in nutrition, and I am a member of the Academy of Nutrition and Dietetics.
(224) 400-9616 View (224) 400-9616
Photo of Tracy And Amy Trauma Informed Nutrition Therapists, Nutritionist/Dietitian, RD, LD/N
Tracy And Amy Trauma Informed Nutrition Therapists
Nutritionist/Dietitian, RD, LD/N
Serves Area
It is not often we are encouraged to honor our bodies needs. We live in world that teaches us to "watch it" and "have it together", especially around weight and food. Unfortunately, this constant pressure to "be good" can play a role in constant dieting, restricting, binging, purging and an all or nothing attitude around exercise. Fortunately, we can make peace with food and our bodies again. Our approach of trauma informed nutrition counseling and coaching teaches non-diet eating and body wisdom skills to learn to trust and feel safe inside the body and manage chronic issues such as burned and stressed out, PCOS and gut health.
It is not often we are encouraged to honor our bodies needs. We live in world that teaches us to "watch it" and "have it together", especially around weight and food. Unfortunately, this constant pressure to "be good" can play a role in constant dieting, restricting, binging, purging and an all or nothing attitude around exercise. Fortunately, we can make peace with food and our bodies again. Our approach of trauma informed nutrition counseling and coaching teaches non-diet eating and body wisdom skills to learn to trust and feel safe inside the body and manage chronic issues such as burned and stressed out, PCOS and gut health.
(217) 269-0326 View (217) 269-0326

Online Dietitians and Nutritionists

Photo of Ashley Lakin, Nutritionist/Dietitian, MS, CNS, LDN
Ashley Lakin
Nutritionist/Dietitian, MS, CNS, LDN
Online Only
I am especially passionate about working with individuals through all phases of life to address hormonal concerns, such as infertility, menopause, PCOS, endometriosis, and postpartum mood disorders. My practice is HAES-aligned and LGBTQIA-friendly. I believe that everyone deserves evidence-based, compassionate care that honors their identity, autonomy, and whole-person wellbeing.
I am especially passionate about working with individuals through all phases of life to address hormonal concerns, such as infertility, menopause, PCOS, endometriosis, and postpartum mood disorders. My practice is HAES-aligned and LGBTQIA-friendly. I believe that everyone deserves evidence-based, compassionate care that honors their identity, autonomy, and whole-person wellbeing.
(847) 665-1958 View (847) 665-1958
Photo of Brittany Norem, Nutritionist/Dietitian, RDN, LDN
Brittany Norem
Nutritionist/Dietitian, RDN, LDN
3 Endorsed
Chicago, IL 60638
Specialities include: Weight management, Pre-Diabetes, Type 2 Diabetes, Gestational Diabetes, PCOS, Heart Healthy Eating, General Nutrition, High Cholesterol, Pre/Post Natal Nutrition, Celiac Disease, IBS, Vegetarian and Vegan diets.
Brittany is a Registered Dietitian Nutritionist with Health Loft who works collaboratively with clients to create life-long and sustainable changes. Brittany understands that change takes time and works with client’s to find this balance in nutrition and daily movement. Through open discussion during sessions, client's will learn how to establish daily patterns that ultimately create healthy habits for long-term success. Brittany believes there is no one perfect diet and works with you to find the dietary interventions best suited for your health journey.
Specialities include: Weight management, Pre-Diabetes, Type 2 Diabetes, Gestational Diabetes, PCOS, Heart Healthy Eating, General Nutrition, High Cholesterol, Pre/Post Natal Nutrition, Celiac Disease, IBS, Vegetarian and Vegan diets.
Brittany is a Registered Dietitian Nutritionist with Health Loft who works collaboratively with clients to create life-long and sustainable changes. Brittany understands that change takes time and works with client’s to find this balance in nutrition and daily movement. Through open discussion during sessions, client's will learn how to establish daily patterns that ultimately create healthy habits for long-term success. Brittany believes there is no one perfect diet and works with you to find the dietary interventions best suited for your health journey.
(904) 467-7389 View (904) 467-7389
Photo of Alexa Morello, Nutritionist/Dietitian, RDN, MS, LDN
Alexa Morello
Nutritionist/Dietitian, RDN, MS, LDN
Online Only
My ideal clients are individuals seeking support for women’s health, gut health, metabolic wellness, and long-term health. They often feel frustrated by ongoing symptoms, inconsistent results, or advice that doesn’t fit their lifestyle. I take a whole-person approach, looking at nutrition, habits, stress, and routines to understand the root of concerns. Together, we build personalized, realistic strategies that support symptom relief and long-term wellness, helping clients feel confident, supported, and consistent in their health journey.
My ideal clients are individuals seeking support for women’s health, gut health, metabolic wellness, and long-term health. They often feel frustrated by ongoing symptoms, inconsistent results, or advice that doesn’t fit their lifestyle. I take a whole-person approach, looking at nutrition, habits, stress, and routines to understand the root of concerns. Together, we build personalized, realistic strategies that support symptom relief and long-term wellness, helping clients feel confident, supported, and consistent in their health journey.
(708) 991-5413 View (708) 991-5413
Photo of Carly Leanza, Nutritionist/Dietitian, MPH, RDN, LDN
Carly Leanza
Nutritionist/Dietitian, MPH, RDN, LDN
6 Endorsed
Chicago, IL 60619
Carly is a Registered Dietitian who is passionate about helping people live their healthiest lives while fostering a positive relationship with food. She believes in taking a holistic approach to address the complex relationship between nutrition, mental health, and chronic conditions. Carly provides HAES-aligned care and emphasizes a non-diet approach for her nutrition counseling and evidenced-based interventions in several areas of health and nutrition, including but not limited to, pre-diabetes, type 2 diabetes, weight management, heart health, and GI management.
Carly is a Registered Dietitian who is passionate about helping people live their healthiest lives while fostering a positive relationship with food. She believes in taking a holistic approach to address the complex relationship between nutrition, mental health, and chronic conditions. Carly provides HAES-aligned care and emphasizes a non-diet approach for her nutrition counseling and evidenced-based interventions in several areas of health and nutrition, including but not limited to, pre-diabetes, type 2 diabetes, weight management, heart health, and GI management.
(405) 267-4939 View (405) 267-4939
Photo of Bailie Devlin, Nutritionist/Dietitian, MS, RD, LD
Bailie Devlin
Nutritionist/Dietitian, MS, RD, LD
2 Endorsed
Chicago, IL 60615
Bailie is a Registered Dietitian with experience in weight loss, eating disorders and performance nutrition. She believes food is medicine and is dedicated to helping you create a positive relationship with food and movement while working together towards your goals. Bailie believes nutrition is not one size fits all and works with the patient to develop customized care based on the their goals, needs and lifestyle.
Bailie is a Registered Dietitian with experience in weight loss, eating disorders and performance nutrition. She believes food is medicine and is dedicated to helping you create a positive relationship with food and movement while working together towards your goals. Bailie believes nutrition is not one size fits all and works with the patient to develop customized care based on the their goals, needs and lifestyle.
(816) 409-1516 View (816) 409-1516
Photo of Rachel Donnellan, Nutritionist/Dietitian, RDN
Rachel Donnellan
Nutritionist/Dietitian, RDN
Online Only
My ideal clients are individuals seeking a sustainable, whole-health approach to nutrition that supports strength, mobility, and overall wellness. They often feel frustrated by restrictive diets or advice that doesn’t fit their lifestyle and want realistic, personalized support. I use a functional nutrition approach rooted in evidence-based care and focused on building lasting habits. Together, we create practical strategies that build on what’s already working, helping clients feel stronger, more confident, and supported in their everyday lives.
My ideal clients are individuals seeking a sustainable, whole-health approach to nutrition that supports strength, mobility, and overall wellness. They often feel frustrated by restrictive diets or advice that doesn’t fit their lifestyle and want realistic, personalized support. I use a functional nutrition approach rooted in evidence-based care and focused on building lasting habits. Together, we create practical strategies that build on what’s already working, helping clients feel stronger, more confident, and supported in their everyday lives.
(872) 253-6146 View (872) 253-6146
Photo of Christi Kargl, Nutritionist/Dietitian, MS, RD, CDCES
Christi Kargl
Nutritionist/Dietitian, MS, RD, CDCES
Online Only
Christi (she/her) is a registered dietitian, a Certified Diabetes Care and Education Specialist (CDCES), and a Lifestyle Coach for the Diabetes Prevention Program. She studied dietetics and dance at Michigan State University and completed a master’s degree in applied nutrition at Russell Sage College. She helps clients with a variety of health concerns and specializes in diabetes, metabolic disorders, mental health conditions, digestion issues and weight concerns. Christi is LGBTQ+ ally with years of experience providing inclusive care.
Christi (she/her) is a registered dietitian, a Certified Diabetes Care and Education Specialist (CDCES), and a Lifestyle Coach for the Diabetes Prevention Program. She studied dietetics and dance at Michigan State University and completed a master’s degree in applied nutrition at Russell Sage College. She helps clients with a variety of health concerns and specializes in diabetes, metabolic disorders, mental health conditions, digestion issues and weight concerns. Christi is LGBTQ+ ally with years of experience providing inclusive care.
(312) 584-2745 View (312) 584-2745
Photo of Anna Petersen, Nutritionist/Dietitian, MS, RD, LDN
Anna Petersen
Nutritionist/Dietitian, MS, RD, LDN
Online Only
Anna works collaboratively with clients, utilizing a root cause approach, while providing quality care in an accessible manner. She believes that food is not only fuel but a vital component of a person's overall health and happiness. Her approach is characterized by empathy and active listening, allowing her to understand each client’s unique challenges and aspirations. Anna's focus is on functional nutrition, meaning she looks at how food and nutrients affect bodily functions - from energy and digestion to mood and cognitive function.
Anna works collaboratively with clients, utilizing a root cause approach, while providing quality care in an accessible manner. She believes that food is not only fuel but a vital component of a person's overall health and happiness. Her approach is characterized by empathy and active listening, allowing her to understand each client’s unique challenges and aspirations. Anna's focus is on functional nutrition, meaning she looks at how food and nutrients affect bodily functions - from energy and digestion to mood and cognitive function.
(779) 228-3873 View (779) 228-3873
Photo of Daneris Morales, Nutritionist/Dietitian, MS, RD, RDN, LD, LDN
Daneris Morales
Nutritionist/Dietitian, MS, RD, RDN, LD, LDN
Online Only
My ideal clients are individuals seeking to heal their relationship with food, body, and self through intuitive eating and personalized nutrition support. They often feel disconnected, stuck in dieting cycles, or overwhelmed by food rules, and want a more compassionate, sustainable approach. I help them reconnect with their body’s needs through 1:1, individualized guidance that is supportive and deeply personalized. Together, we focus on behavior change, self-trust, and developing a healthier, more peaceful relationship with food and eating.
My ideal clients are individuals seeking to heal their relationship with food, body, and self through intuitive eating and personalized nutrition support. They often feel disconnected, stuck in dieting cycles, or overwhelmed by food rules, and want a more compassionate, sustainable approach. I help them reconnect with their body’s needs through 1:1, individualized guidance that is supportive and deeply personalized. Together, we focus on behavior change, self-trust, and developing a healthier, more peaceful relationship with food and eating.
(708) 381-1690 View (708) 381-1690
Photo of Ashley McTaggart, Nutritionist/Dietitian, RDN, LDN
Ashley McTaggart
Nutritionist/Dietitian, RDN, LDN
2 Endorsed
Chicago, IL 60601
Formerly Ashley Evans. I am a Registered Dietitian and an alumna of Northern Illinois University. With over seven years of experience in the eating disorder field, I am deeply passionate about supporting individuals in their recovery journey. I began my nutrition career at a residential eating disorder facility in downtown Chicago and later expanded my expertise through roles in Partial Hospitalization Program (PHP) and Intensive Outpatient Program (IOP) levels of care. My nutrition philosophy emphasizes building a healthy and positive relationship with food, integrating mental, emotional, physical, and social health.
Formerly Ashley Evans. I am a Registered Dietitian and an alumna of Northern Illinois University. With over seven years of experience in the eating disorder field, I am deeply passionate about supporting individuals in their recovery journey. I began my nutrition career at a residential eating disorder facility in downtown Chicago and later expanded my expertise through roles in Partial Hospitalization Program (PHP) and Intensive Outpatient Program (IOP) levels of care. My nutrition philosophy emphasizes building a healthy and positive relationship with food, integrating mental, emotional, physical, and social health.
(773) 372-0099 View (773) 372-0099
Photo of Alexis Pinto, Nutritionist/Dietitian, MS, RDN, LDN
Alexis Pinto
Nutritionist/Dietitian, MS, RDN, LDN
1 Endorsed
Online Only
Alexis is a Registered Dietitian passionate about functional nutrition and helping individuals build a healthy, trusting relationship with food. She believes that while food is emotional, social, and environmental, it is also a powerful tool for disease prevention and management. Her holistic, non-diet approach blends functional nutrition with evidence-based practices to address underlying factors impacting health. Alexis focuses on sustainable behavior change, honoring each client’s unique biology, lifestyle, and goals—while creating a supportive, judgment-free space for healing and growth.
Alexis is a Registered Dietitian passionate about functional nutrition and helping individuals build a healthy, trusting relationship with food. She believes that while food is emotional, social, and environmental, it is also a powerful tool for disease prevention and management. Her holistic, non-diet approach blends functional nutrition with evidence-based practices to address underlying factors impacting health. Alexis focuses on sustainable behavior change, honoring each client’s unique biology, lifestyle, and goals—while creating a supportive, judgment-free space for healing and growth.
(220) 234-1014 View (220) 234-1014
Photo of Jacs Scheinman, Nutritionist/Dietitian, RDN, LDN
Jacs Scheinman
Nutritionist/Dietitian, RDN, LDN
Online Only
Hi, I’m Jacs Scheinman (he/him)—a registered dietitian and co-founder of Food 4 Thought Nutrition, PLLC. I specialize in compassionate, neurodiversity-affirming support for neurodivergent, queer, and chronically ill individuals—especially those navigating disordered eating, ARFID, or complex medical and digestive conditions. If traditional nutrition advice hasn’t worked for your brain or body, you’re not alone—and you’re not broken.
Hi, I’m Jacs Scheinman (he/him)—a registered dietitian and co-founder of Food 4 Thought Nutrition, PLLC. I specialize in compassionate, neurodiversity-affirming support for neurodivergent, queer, and chronically ill individuals—especially those navigating disordered eating, ARFID, or complex medical and digestive conditions. If traditional nutrition advice hasn’t worked for your brain or body, you’re not alone—and you’re not broken.
(847) 910-3662 View (847) 910-3662
Photo of Kelly Bay, Nutritionist/Dietitian, MS, RDN, LDN, CNS, DC
Kelly Bay
Nutritionist/Dietitian, MS, RDN, LDN, CNS, DC
Online Only
My ideal clients are individuals experiencing complex, chronic health concerns such as gut issues, hormone imbalance, autoimmune conditions, thyroid dysfunction, food sensitivities, and low energy or poor sleep. They often feel frustrated by vague symptoms or inconclusive conventional testing and want deeper answers. I use a functional, whole-body approach with in-depth assessment and diagnostic testing to identify root causes. Together, we use personalized nutrition, lifestyle strategies, and education to improve symptoms and restore confidence in their health.
My ideal clients are individuals experiencing complex, chronic health concerns such as gut issues, hormone imbalance, autoimmune conditions, thyroid dysfunction, food sensitivities, and low energy or poor sleep. They often feel frustrated by vague symptoms or inconclusive conventional testing and want deeper answers. I use a functional, whole-body approach with in-depth assessment and diagnostic testing to identify root causes. Together, we use personalized nutrition, lifestyle strategies, and education to improve symptoms and restore confidence in their health.
(708) 938-3273 View (708) 938-3273
Photo of Ashley Walls, Nutritionist/Dietitian, RD, RDN, LDN
Ashley Walls
Nutritionist/Dietitian, RD, RDN, LDN
3 Endorsed
Online Only
Ashley Walls specializes in working with clients interested in general healthy eating, and conditions including Eating Disorders, Disordered Eating, Celiac, Crohn's, IBS, Intuitive Eating, Weight Management and more.
Specialties include working with clients that need assistance with Irritable Bowel Syndrome ( IBS), Low FODMAP diet, GERD, Eating Disorders, Pre-diabetes, Diabetes, Heart conditions, High Blood Pressure, Cholesterol, Celiac, Crohn’s, Ulcerative Colitis, Intuitive Eating, Underweight Nutrition, Weight Management, Malnutrition, Sports Nutrition
Ashley Walls specializes in working with clients interested in general healthy eating, and conditions including Eating Disorders, Disordered Eating, Celiac, Crohn's, IBS, Intuitive Eating, Weight Management and more.
Specialties include working with clients that need assistance with Irritable Bowel Syndrome ( IBS), Low FODMAP diet, GERD, Eating Disorders, Pre-diabetes, Diabetes, Heart conditions, High Blood Pressure, Cholesterol, Celiac, Crohn’s, Ulcerative Colitis, Intuitive Eating, Underweight Nutrition, Weight Management, Malnutrition, Sports Nutrition
(312) 262-7112 View (312) 262-7112
Photo of Carol Burtnack, Nutritionist/Dietitian, MS, RDN, LDN, CEDS
Carol Burtnack
Nutritionist/Dietitian, MS, RDN, LDN, CEDS
2 Endorsed
Chicago, IL 60643
Carol is a Registered Dietitian and Certified Eating Disorder Specialist dedicated to supporting individuals in their recovery and health-driven goals. Her approach to nutrition emphasizes a size-inclusive framework, prioritizing peace with food and fostering a healthy relationship with the body. Carol utilizes patient-centered care to provide a non-diet approach to nutrition.
Carol is a Registered Dietitian and Certified Eating Disorder Specialist dedicated to supporting individuals in their recovery and health-driven goals. Her approach to nutrition emphasizes a size-inclusive framework, prioritizing peace with food and fostering a healthy relationship with the body. Carol utilizes patient-centered care to provide a non-diet approach to nutrition.
(904) 650-3991 View (904) 650-3991
Photo of Juhi Shah, Nutritionist/Dietitian, MS, RDN, LDN
Juhi Shah
Nutritionist/Dietitian, MS, RDN, LDN
Chicago, IL 60654
Are you looking for an individualized approach to nutrition? Do you feel stuck in the dieting cycle and not sure where to go next? Do you struggle to incorporate healthy habits during busy weeks with hectic schedules? I am a Registered Dietitian at Fuel U (by SHIFT), a 12-week personalized nutrition coaching program (available both in-person and virtually). Through my connection with SHIFT, a concierge medical practice in River North, I have access to primary care physicians, best-in-class diagnostics (including our dual-compartment DEXA scan), and other clinical resources that aid in coaching our Fuel U clients.
Are you looking for an individualized approach to nutrition? Do you feel stuck in the dieting cycle and not sure where to go next? Do you struggle to incorporate healthy habits during busy weeks with hectic schedules? I am a Registered Dietitian at Fuel U (by SHIFT), a 12-week personalized nutrition coaching program (available both in-person and virtually). Through my connection with SHIFT, a concierge medical practice in River North, I have access to primary care physicians, best-in-class diagnostics (including our dual-compartment DEXA scan), and other clinical resources that aid in coaching our Fuel U clients.
(815) 605-2571 View (815) 605-2571
Photo of Reanna Peterman, Nutritionist/Dietitian, MS, RDN, LDN
Reanna Peterman
Nutritionist/Dietitian, MS, RDN, LDN
Online Only
My ideal client feels stuck in diet culture, food guilt, or body shame. You might be struggling with an eating disorder, chronic dieting, or feeling disconnected from your body’s needs. Maybe you're neurodivergent and navigating sensory challenges, or you’ve had frustrating experiences with weight-focused healthcare. You want to heal your relationship with food, break free from shame, and find sustainable nourishment that feels good. You’re looking for a weight-inclusive, intuitive approach that helps you trust yourself again—I’m here to help you do just that.
My ideal client feels stuck in diet culture, food guilt, or body shame. You might be struggling with an eating disorder, chronic dieting, or feeling disconnected from your body’s needs. Maybe you're neurodivergent and navigating sensory challenges, or you’ve had frustrating experiences with weight-focused healthcare. You want to heal your relationship with food, break free from shame, and find sustainable nourishment that feels good. You’re looking for a weight-inclusive, intuitive approach that helps you trust yourself again—I’m here to help you do just that.
(815) 855-2454 View (815) 855-2454
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.