Irritable Bowel Syndrome (IBS) Nutritionists and Dietitians in Glenside, PA

There are no results for health professionals in Glenside

Check out health professionals located nearby or offering Teletherapy in Pennsylvania below.

More Dietitians and Nutritionists Nearby

Photo of Tracy Brown - Tracy Brown,RD , Char-Lee Cassel RD, Nutritionist/Dietitian
Tracy Brown,RD , Char-Lee Cassel RD
Nutritionist/Dietitian
Philadelphia, PA 19135
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.
(215) 486-0669 View (215) 486-0669
Photo of Beth Chiodo - Beth Chiodo, MS, RD, LDN, CWC, CLT, Nutritionist/Dietitian, MS, RD, LDN, CWC, CLT
Beth Chiodo, MS, RD, LDN, CWC, CLT
Nutritionist/Dietitian, MS, RD, LDN, CWC, CLT
Ambler, PA 19002
As a fellow Crohn's disease sufferer, I work with IBD, IBS, Celiac, SIBO, Gluten Intolerance and Food Sensitivities, Intestinal Permeability (AKA Leaky Gut), and more.
As a Certified Wellness Coach and Registered Dietitian, I take evidence-based research and teach you how to apply that to your lifestyle to improve your gut health. Using techniques of mindfulness and behavior change, I can help you be successful in improving your health and changing your life.
As a fellow Crohn's disease sufferer, I work with IBD, IBS, Celiac, SIBO, Gluten Intolerance and Food Sensitivities, Intestinal Permeability (AKA Leaky Gut), and more.
As a Certified Wellness Coach and Registered Dietitian, I take evidence-based research and teach you how to apply that to your lifestyle to improve your gut health. Using techniques of mindfulness and behavior change, I can help you be successful in improving your health and changing your life.
(484) 494-2928 View (484) 494-2928
Photo of Kristie L Finnan, Nutritionist/Dietitian, RDN, LDN
Kristie L Finnan
Nutritionist/Dietitian, RDN, LDN
1 Endorsed
Doylestown, PA 18902
If you have IBS, Celiac, Ulcerative Colitis, Crohns or other Digestive health issues?
Looking to improve your health & wellness? Every client is different. Let me help you individualize a plan to meet your needs. Whether you are looking to lose weight, improve your digestive health (I specialize in the Low FODMAP diet) lower cholesterol or blood sugar, I am happy to help! I also have experience and am passionate about helping athletes eat right for top performance. Food is fuel. Let me help you figure out the best fuel for you! I am a Registered Dietitian/Licensed Nutritionist in Doylestown, PA (NOTE: I also offer tele-health and phone consults for those too far away) Book appointment online: www.EatRightBucks.com
If you have IBS, Celiac, Ulcerative Colitis, Crohns or other Digestive health issues?
Looking to improve your health & wellness? Every client is different. Let me help you individualize a plan to meet your needs. Whether you are looking to lose weight, improve your digestive health (I specialize in the Low FODMAP diet) lower cholesterol or blood sugar, I am happy to help! I also have experience and am passionate about helping athletes eat right for top performance. Food is fuel. Let me help you figure out the best fuel for you! I am a Registered Dietitian/Licensed Nutritionist in Doylestown, PA (NOTE: I also offer tele-health and phone consults for those too far away) Book appointment online: www.EatRightBucks.com
(267) 573-8057 View (267) 573-8057
Photo of Natalie Meltzer, Nutritionist/Dietitian, RD
Natalie Meltzer
Nutritionist/Dietitian, RD
Online Only
My ideal clients are individuals managing GI disorders, chronic diseases, or age-related health concerns who want practical, personalized nutrition support. They often feel unsure how to apply nutrition advice in real life and are looking for realistic strategies that fit their needs. I provide individualized, evidence-based care rooted in a “food as medicine” approach. By understanding each client’s goals, we build practical habits and use nutrition to support symptom management, overall health, and long-term well-being.
My ideal clients are individuals managing GI disorders, chronic diseases, or age-related health concerns who want practical, personalized nutrition support. They often feel unsure how to apply nutrition advice in real life and are looking for realistic strategies that fit their needs. I provide individualized, evidence-based care rooted in a “food as medicine” approach. By understanding each client’s goals, we build practical habits and use nutrition to support symptom management, overall health, and long-term well-being.
(708) 419-2485 View (708) 419-2485
Photo of Jennifer Laurence, Nutritionist/Dietitian, MA, RD, LDN
Jennifer Laurence
Nutritionist/Dietitian, MA, RD, LDN
1 Endorsed
West Chester, PA 19380
I work with individuals who are struggling with unwanted weight gain and undesired symptoms such as fatigue, low energy, or lack of motivation. If you are feeling overwhelmed and confused over what to eat and want to feel your absolute best again, I can help you. Maybe you’ve tried different fad diets but couldn’t stick with them. Maybe there are more underlying causes to your weight gain that you suspect, but no one will listen or help you figure it out. Maybe you prioritize everyone or everything in your life but need support and a plan that is just for YOU. Maybe all of this thinking about food has you really STRESSED OUT.
I work with individuals who are struggling with unwanted weight gain and undesired symptoms such as fatigue, low energy, or lack of motivation. If you are feeling overwhelmed and confused over what to eat and want to feel your absolute best again, I can help you. Maybe you’ve tried different fad diets but couldn’t stick with them. Maybe there are more underlying causes to your weight gain that you suspect, but no one will listen or help you figure it out. Maybe you prioritize everyone or everything in your life but need support and a plan that is just for YOU. Maybe all of this thinking about food has you really STRESSED OUT.
(484) 498-6286 View (484) 498-6286
Photo of Chelsea Hoover - Fuel For Thought Nutrition, LLC, Nutritionist/Dietitian, MS, RD, LDN
Fuel For Thought Nutrition, LLC
Nutritionist/Dietitian, MS, RD, LDN
Philadelphia, PA 19130
Specializing in nutrition, exercise, and a holistic approach to wellness, my goal is to provide you the support, tools, & expertise needed to facilitate your health journey. Whether you are starting from square one or simply need a little extra guidance, together we will create a customized plan that meets you where you are.​ No Judgement and no quick fixes. Just a practical and sustainable approach to lifelong wellness.​
Specializing in nutrition, exercise, and a holistic approach to wellness, my goal is to provide you the support, tools, & expertise needed to facilitate your health journey. Whether you are starting from square one or simply need a little extra guidance, together we will create a customized plan that meets you where you are.​ No Judgement and no quick fixes. Just a practical and sustainable approach to lifelong wellness.​
(484) 734-1131 View (484) 734-1131
Photo of June Kuz, Nutritionist/Dietitian, MS, RD, LDN, CLT, IFNCP
June Kuz
Nutritionist/Dietitian, MS, RD, LDN, CLT, IFNCP
Downingtown, PA 19335
Are you struggling with chronic health issues like obesity, migraines, fatigue, brain fog, or digestive problems like IBS or fibromyalgia?
I specialize in uncovering the root causes of your symptoms and creating personalized plans. By focusing on personalized nutrition and specialized lab testing, I identify imbalances in hormones, gut health, vitamins, and metabolism. I create tailored nutrition plans that address your unique needs, helping you achieve lasting wellness and optimal health.
Are you struggling with chronic health issues like obesity, migraines, fatigue, brain fog, or digestive problems like IBS or fibromyalgia?
I specialize in uncovering the root causes of your symptoms and creating personalized plans. By focusing on personalized nutrition and specialized lab testing, I identify imbalances in hormones, gut health, vitamins, and metabolism. I create tailored nutrition plans that address your unique needs, helping you achieve lasting wellness and optimal health.
(610) 298-1482 View (610) 298-1482
Photo of Dana A Wells, Nutritionist/Dietitian, MEd, RD, LDN, LPC, CPT
Dana A Wells
Nutritionist/Dietitian, MEd, RD, LDN, LPC, CPT
Doylestown, PA 18901
Dana specializes in individual holistic client care by supporting clients, not only through learning how to eat healthier, but also dealing with one's psychological relationship with food. Dana is a Registered Dietitian/Nutritionist, Licensed Professional Counselor, specializing in Weight Management, Eating Disorders and Sports Nutrition. She works with clients on an interpersonal level in order to provide quality care that goes beyond just basic nutrition services. Her philosophy is that, in order to help one achieve optimal wellness, it is important to get know each client as an individual and explore their associations with food.
Dana specializes in individual holistic client care by supporting clients, not only through learning how to eat healthier, but also dealing with one's psychological relationship with food. Dana is a Registered Dietitian/Nutritionist, Licensed Professional Counselor, specializing in Weight Management, Eating Disorders and Sports Nutrition. She works with clients on an interpersonal level in order to provide quality care that goes beyond just basic nutrition services. Her philosophy is that, in order to help one achieve optimal wellness, it is important to get know each client as an individual and explore their associations with food.
(267) 352-4528 View (267) 352-4528
Photo of Claire DeMenna, Nutritionist/Dietitian, RDN
Claire DeMenna
Nutritionist/Dietitian, RDN
Online Only
I treat eating disorders (anorexia, bulimia, binge eating disorder), IBS and digestive concerns, food allergies, body image distress, and stress around food.
I specialize helping individuals navigating eating disorders (anorexia, bulimia, binge eating disorder, ARFID, OSFED), as well as those experiencing GI concerns, body image, identity exploration, or major life transitions. Many of my clients feel out of control around food, stuck in restrictive or binge cycles, or disconnected from their bodies. I take a compassionate, weight-inclusive, and trauma-informed approach, helping clients understand the root of their struggles, rebuild trust with their bodies, and move toward a more peaceful, sustainable relationship with food and themselves.
I treat eating disorders (anorexia, bulimia, binge eating disorder), IBS and digestive concerns, food allergies, body image distress, and stress around food.
I specialize helping individuals navigating eating disorders (anorexia, bulimia, binge eating disorder, ARFID, OSFED), as well as those experiencing GI concerns, body image, identity exploration, or major life transitions. Many of my clients feel out of control around food, stuck in restrictive or binge cycles, or disconnected from their bodies. I take a compassionate, weight-inclusive, and trauma-informed approach, helping clients understand the root of their struggles, rebuild trust with their bodies, and move toward a more peaceful, sustainable relationship with food and themselves.
(610) 423-1721 View (610) 423-1721
Photo of Gina Hassick - Eat Well Collective, Nutritionist/Dietitian, MA, RD, LDN, NCC, CDCES
Eat Well Collective
Nutritionist/Dietitian, MA, RD, LDN, NCC, CDCES
Philadelphia, PA 19146
We are a team of weight-inclusive, Health At Every Size aligned Registered Dietitians providing individualized nutrition counseling utilizing an anti-diet, intuitive eating approach. We support our clients by creating a safe space for them to tune into their inner self, strengthen their mind-body connection, find compassion for themselves and improve their overall well-being.
We are a team of weight-inclusive, Health At Every Size aligned Registered Dietitians providing individualized nutrition counseling utilizing an anti-diet, intuitive eating approach. We support our clients by creating a safe space for them to tune into their inner self, strengthen their mind-body connection, find compassion for themselves and improve their overall well-being.
(484) 917-2349 View (484) 917-2349
Photo of Anna Velazquez, Nutritionist/Dietitian, MS, RD, LDN
Anna Velazquez
Nutritionist/Dietitian, MS, RD, LDN
1 Endorsed
Online Only
Anna is a Registered Dietitian that practices out of Health Loft specializing in working with adults and pediatrics with a history of GI disorders (Celiac, IBS, Low-FODMAP, IBD, Constipation, GERD, lactase and sucrase deficiency), Healthy Eating, Food Allergies, and Pediatric Nutrition.
Specialties include working with and adults and pediatrics with a history of GI disorders (Celiac, IBS, Low-FODMAP, IBD, Constipation, GERD, lactase and sucrase deficiency), interest in Healthy Eating, Food Allergies, and Pediatric Nutrition. Anna also works with clients with Diverticulitis, and Disordered Eating.
Anna is a Registered Dietitian that practices out of Health Loft specializing in working with adults and pediatrics with a history of GI disorders (Celiac, IBS, Low-FODMAP, IBD, Constipation, GERD, lactase and sucrase deficiency), Healthy Eating, Food Allergies, and Pediatric Nutrition.
Specialties include working with and adults and pediatrics with a history of GI disorders (Celiac, IBS, Low-FODMAP, IBD, Constipation, GERD, lactase and sucrase deficiency), interest in Healthy Eating, Food Allergies, and Pediatric Nutrition. Anna also works with clients with Diverticulitis, and Disordered Eating.
(561) 709-2317 View (561) 709-2317
Photo of Anna Grumm, Nutritionist/Dietitian, MS, RD, LDN
Anna Grumm
Nutritionist/Dietitian, MS, RD, LDN
5 Endorsed
Serves Area
Anna’s ideal clients are individuals looking for practical, personalized support to improve their health through realistic nutrition and lifestyle changes. Many come to her feeling overwhelmed, stuck, or unsure where to begin. She helps clients build sustainable habits through a supportive, collaborative approach that considers the whole person, including nutrition, mental well-being, physical health, and each client’s unique goals.
Anna’s ideal clients are individuals looking for practical, personalized support to improve their health through realistic nutrition and lifestyle changes. Many come to her feeling overwhelmed, stuck, or unsure where to begin. She helps clients build sustainable habits through a supportive, collaborative approach that considers the whole person, including nutrition, mental well-being, physical health, and each client’s unique goals.
(971) 449-1216 View (971) 449-1216
Photo of Leah Frazee, Nutritionist/Dietitian, RD, LDN
Leah Frazee
Nutritionist/Dietitian, RD, LDN
Newtown, PA 18940
I am Nutrition Therapist specializing in, behavioral eating patterns, eating disorders, diabetes, PCOS and overall wellness. I also work with a variety of other medical conditions. I have a refreshing approach to help clients, whether its breaking away from diet culture or needing to makes real sustainable changes to improve your health. I can help implement a non-diet, all food fits, Health at Every Size® approach in a non-judgmental, compassionate environment. I will help you establish a healthier relationship with food, body and overall self. I will help you achieve your goals and maintain success throughout your life.
I am Nutrition Therapist specializing in, behavioral eating patterns, eating disorders, diabetes, PCOS and overall wellness. I also work with a variety of other medical conditions. I have a refreshing approach to help clients, whether its breaking away from diet culture or needing to makes real sustainable changes to improve your health. I can help implement a non-diet, all food fits, Health at Every Size® approach in a non-judgmental, compassionate environment. I will help you establish a healthier relationship with food, body and overall self. I will help you achieve your goals and maintain success throughout your life.
(609) 642-1442 View (609) 642-1442
Photo of Alyson Roux, Nutritionist/Dietitian, MS, CNS, LDN
Alyson Roux
Nutritionist/Dietitian, MS, CNS, LDN
Online Only
You have spent so much time trying to eat perfectly that food has become exhausting. You want peace with eating and confidence in your body again. I help people who feel burned out from diets or stress find simple, sustainable ways to nourish themselves. Alongside my client work, I teach postgraduate nutrition students how to blend science, compassion, and trauma informed care.
You have spent so much time trying to eat perfectly that food has become exhausting. You want peace with eating and confidence in your body again. I help people who feel burned out from diets or stress find simple, sustainable ways to nourish themselves. Alongside my client work, I teach postgraduate nutrition students how to blend science, compassion, and trauma informed care.
(224) 218-5455 View (224) 218-5455
Photo of Paige Bates, Nutritionist/Dietitian, MS, RD, LDN
Paige Bates
Nutritionist/Dietitian, MS, RD, LDN
3 Endorsed
Serves Area
Paige is a Registered Dietitian with over 7 years of experience in several areas of nutrition, including but not limited to clinical nutrition for adults and neonates, pediatrics, public health, and weight management. She realized at an early age that she was passionate about helping people improve their health and well-being through holistic nutrition and lifestyle management. She is particularly passionate about working with women to manage their hormone health, including conditions such as PCOS, infertility, and other similar issues.
Paige is a Registered Dietitian with over 7 years of experience in several areas of nutrition, including but not limited to clinical nutrition for adults and neonates, pediatrics, public health, and weight management. She realized at an early age that she was passionate about helping people improve their health and well-being through holistic nutrition and lifestyle management. She is particularly passionate about working with women to manage their hormone health, including conditions such as PCOS, infertility, and other similar issues.
(817) 904-2629 View (817) 904-2629
Photo of Andrew Baer, Nutritionist/Dietitian, RDN, LDN
Andrew Baer
Nutritionist/Dietitian, RDN, LDN
I embrace the idea that we are all different, therefore I address not only your nutritional needs but also your unique preferences, tastes, and lifestyles. Whether you are looking to lose weight, build muscle, lower cholesterol or blood sugar, improve digestive health, or even heal your relationship with food, I am here to help! My goal is to help people create a better relationship with food in a way that is fun and sustainable. I'm also committed to making sure my clients meet their nutrition and exercise goals as well. Overall, I love sharing my knowledge and enjoy helping others achieve their personal goals.
I embrace the idea that we are all different, therefore I address not only your nutritional needs but also your unique preferences, tastes, and lifestyles. Whether you are looking to lose weight, build muscle, lower cholesterol or blood sugar, improve digestive health, or even heal your relationship with food, I am here to help! My goal is to help people create a better relationship with food in a way that is fun and sustainable. I'm also committed to making sure my clients meet their nutrition and exercise goals as well. Overall, I love sharing my knowledge and enjoy helping others achieve their personal goals.
(215) 598-6472 View (215) 598-6472
Photo of Megan Cashdollar, Nutritionist/Dietitian, NTA
Megan Cashdollar
Nutritionist/Dietitian, NTA
4 Endorsed
Online Only
If you’ve been to doctor after doctor without real answers, you’re not alone, and you’re in the right place. I specialize in complex, chronic health challenges and help clients address issues like autoimmune conditions, severe digestive symptoms, hormone imbalances, thyroid issues, chronic fatigue, brain fog, anxiety, depression, joint pain, stubborn weight that won’t budge, blood sugar dysregulation and diabetes support, PMS, oxalate & histamine issues & food intolerances. As a functional nutritionist, I don’t believe in chasing symptoms or one-size-fits-all plans.
If you’ve been to doctor after doctor without real answers, you’re not alone, and you’re in the right place. I specialize in complex, chronic health challenges and help clients address issues like autoimmune conditions, severe digestive symptoms, hormone imbalances, thyroid issues, chronic fatigue, brain fog, anxiety, depression, joint pain, stubborn weight that won’t budge, blood sugar dysregulation and diabetes support, PMS, oxalate & histamine issues & food intolerances. As a functional nutritionist, I don’t believe in chasing symptoms or one-size-fits-all plans.
(267) 710-8136 View (267) 710-8136
Photo of Nadia Pugh, Nutritionist/Dietitian, MS, RDN, LDN
Nadia Pugh
Nutritionist/Dietitian, MS, RDN, LDN
4 Endorsed
Serves Area
Nadia is passionate about women’s health, PCOS, fertility, thyroid and autoimmune disorders, renal health, and diabetes management. Her holistic approach focuses on individualized nutrition plans that cater to your unique needs and goals. She emphasizes that there’s no one-size-fits-all diet and aims to empower you with healthy eating habits that resonate with your preferences. Whether you’re addressing imbalances, seeking better habits, or enhancing your relationship with food, Nadia is committed to providing personalized support and practical advice for lasting well-being.
Nadia is passionate about women’s health, PCOS, fertility, thyroid and autoimmune disorders, renal health, and diabetes management. Her holistic approach focuses on individualized nutrition plans that cater to your unique needs and goals. She emphasizes that there’s no one-size-fits-all diet and aims to empower you with healthy eating habits that resonate with your preferences. Whether you’re addressing imbalances, seeking better habits, or enhancing your relationship with food, Nadia is committed to providing personalized support and practical advice for lasting well-being.
(904) 567-0490 View (904) 567-0490
Photo of Carly Waldman, Nutritionist/Dietitian, MS, RD, L/DN
Carly Waldman
Nutritionist/Dietitian, MS, RD, L/DN
Online Only
My focus is on offering personalized nutrition counseling tailored to fit you and your lifestyle! I focus on weight management, mental health, and many other conditions and diseases.
My focus is on offering personalized nutrition counseling tailored to fit you and your lifestyle! I focus on weight management, mental health, and many other conditions and diseases.
(267) 450-2783 View (267) 450-2783
Photo of Wendy Romig, Nutritionist/Dietitian, DCN, MS, CNS, LDN
Wendy Romig
Nutritionist/Dietitian, DCN, MS, CNS, LDN
Online Only
Doctor of Clinical Nutrition - Over 80% of clients who work with me start to see improvements within 3 weeks. At my clinic, Sage Integrative Health Center, I offer clinical expertise for a wide range of complex health concerns using functional nutrition, herbal medicine and wellness counseling. After your initial consultation, you will receive a comprehensive, customized therapeutic plan which includes my clinical assessment of your condition, nutritional strategies, meal plans, lifestyle recommendations, and areas for monitoring progress. Schedule a complimentary 15-minute phone call or introductory visit to learn more.
Doctor of Clinical Nutrition - Over 80% of clients who work with me start to see improvements within 3 weeks. At my clinic, Sage Integrative Health Center, I offer clinical expertise for a wide range of complex health concerns using functional nutrition, herbal medicine and wellness counseling. After your initial consultation, you will receive a comprehensive, customized therapeutic plan which includes my clinical assessment of your condition, nutritional strategies, meal plans, lifestyle recommendations, and areas for monitoring progress. Schedule a complimentary 15-minute phone call or introductory visit to learn more.
(215) 866-2417 View (215) 866-2417
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.