Irritable Bowel Syndrome (IBS) Nutritionists and Dietitians in Sunol, CA

Photo of Saima Chaudhry, Nutritionist/Dietitian, MPH, RDN, CDCES
Saima Chaudhry
Nutritionist/Dietitian, MPH, RDN, CDCES
Online Only
I empower individuals to overcome health challenges and achieve their goals through personalized, sustainable plans. My approach is rooted in real food and the mind-body connection to support deep healing and lasting wellness. Whether you're navigating diabetes, digestive issues, or other conditions, I offer expert guidance, practical tools, and compassionate coaching to help you take charge of your health. With small, achievable steps, I make the journey simple, sustainable, and transformative—so you can thrive and live a vibrant, fulfilling life.
I empower individuals to overcome health challenges and achieve their goals through personalized, sustainable plans. My approach is rooted in real food and the mind-body connection to support deep healing and lasting wellness. Whether you're navigating diabetes, digestive issues, or other conditions, I offer expert guidance, practical tools, and compassionate coaching to help you take charge of your health. With small, achievable steps, I make the journey simple, sustainable, and transformative—so you can thrive and live a vibrant, fulfilling life.
(240) 776-7682 View (240) 776-7682

More Dietitians and Nutritionists Nearby

Photo of Rebecca Dardashti, Nutritionist/Dietitian, MS, RDN
Rebecca Dardashti
Nutritionist/Dietitian, MS, RDN
Serves Area
I have helped clients with bloating, constipation, diarrhea, IBS, SIBO, IBD (Crohn’s/UC), Celiac, diverticulosis/itis, esophageal disorders, and more.
My approach is scientifically evidence-based and focused on balance: working on supporting your body through nutrition, your relationship with food, and reducing food-related guilt and fear.
I have helped clients with bloating, constipation, diarrhea, IBS, SIBO, IBD (Crohn’s/UC), Celiac, diverticulosis/itis, esophageal disorders, and more.
My approach is scientifically evidence-based and focused on balance: working on supporting your body through nutrition, your relationship with food, and reducing food-related guilt and fear.
(424) 226-3428 View (424) 226-3428
Photo of Amanda Ghighi, Nutritionist/Dietitian, MS, RDN, LDN
Amanda Ghighi
Nutritionist/Dietitian, MS, RDN, LDN
5 Endorsed
Serves Area
Amanda is an RD specializing in general health and wellness, eating disorders and disordered eating. She is dedicated to helping individuals heal their relationship with food and their bodies. Amanda believes in creating a compassionate and supportive environment, incorporating evidence-based nutrition practices to guide clients toward sustainable changes. She strives to empower her clients to break free from diet culture and develop a nourishing and balanced approach to eating. Amanda offers compassionate, patient-centered nutrition care, focusing on non-diet, weight-inclusive principles.
Amanda is an RD specializing in general health and wellness, eating disorders and disordered eating. She is dedicated to helping individuals heal their relationship with food and their bodies. Amanda believes in creating a compassionate and supportive environment, incorporating evidence-based nutrition practices to guide clients toward sustainable changes. She strives to empower her clients to break free from diet culture and develop a nourishing and balanced approach to eating. Amanda offers compassionate, patient-centered nutrition care, focusing on non-diet, weight-inclusive principles.
(862) 225-6191 View (862) 225-6191
Photo of Terri Oberto, Nutritionist/Dietitian, CNC, CPT, PHT, BS
Terri Oberto
Nutritionist/Dietitian, CNC, CPT, PHT, BS
Serves Area
Our office provides extensive evaluation of questionnaires, diet analysis, urine and blood analysis from state of the art labs, in-office and home testing, Kinesiology and Sclerology. This evaluation generates a detailed protocol which is discussed in a lengthy consultation with you. We also offer several modalities which may help with issues you would like to address. These include Biofeedback, Rife, Galvanic Spa and infra red laser technologies, as well as aromatherapy, infra red sauna, cellular detox foot bath, and alkalizing therapies.
Our office provides extensive evaluation of questionnaires, diet analysis, urine and blood analysis from state of the art labs, in-office and home testing, Kinesiology and Sclerology. This evaluation generates a detailed protocol which is discussed in a lengthy consultation with you. We also offer several modalities which may help with issues you would like to address. These include Biofeedback, Rife, Galvanic Spa and infra red laser technologies, as well as aromatherapy, infra red sauna, cellular detox foot bath, and alkalizing therapies.
(831) 400-3405 View (831) 400-3405
Photo of Naia Riley, Nutritionist/Dietitian, RDN, BS
Naia Riley
Nutritionist/Dietitian, RDN, BS
1 Endorsed
Oakland, CA 94611
Accepting New Clients! Tired of feeling like food is the enemy or your body is a problem to fix? If you're exhausted from second-guessing every bite, overwhelmed by food decisions, or disconnected from your body’s cues, you're not alone — and you don’t have to heal alone either. Many of my clients come to me feeling like they’ve tried everything and still feel stuck. I’m here to offer a new way forward: one rooted in safety, compassion, creativity, and who You are as a whole person.
Accepting New Clients! Tired of feeling like food is the enemy or your body is a problem to fix? If you're exhausted from second-guessing every bite, overwhelmed by food decisions, or disconnected from your body’s cues, you're not alone — and you don’t have to heal alone either. Many of my clients come to me feeling like they’ve tried everything and still feel stuck. I’m here to offer a new way forward: one rooted in safety, compassion, creativity, and who You are as a whole person.
(510) 201-5672 View (510) 201-5672
Photo of Cambiati Wellness - Cambiati Wellness, Nutritionist/Dietitian, RD, CN
Cambiati Wellness
Nutritionist/Dietitian, RD, CN
Lafayette, CA 94549
We have questions about your story, your readiness to change, and the way you’re living your life. •Struggling with digestive issues? •Separating your closet into “skinny” and, ahem, “not so skinny” clothes? •Know what to do but just aren't doing it? •Planning to start a new way of eating this Monday…no really, this Monday. Wait, next Monday. •Not sure what's wrong and all of the tests at the doctor's office are "normal"? We offer a no-cost Breakthrough Session so that we can create the perfect plan for you. You can schedule here: https://rebeccaw.as.me/healthprofs I 925-280-4442 I info@cambiati.com I www.cambiati.com
We have questions about your story, your readiness to change, and the way you’re living your life. •Struggling with digestive issues? •Separating your closet into “skinny” and, ahem, “not so skinny” clothes? •Know what to do but just aren't doing it? •Planning to start a new way of eating this Monday…no really, this Monday. Wait, next Monday. •Not sure what's wrong and all of the tests at the doctor's office are "normal"? We offer a no-cost Breakthrough Session so that we can create the perfect plan for you. You can schedule here: https://rebeccaw.as.me/healthprofs I 925-280-4442 I info@cambiati.com I www.cambiati.com
(925) 310-6494 View (925) 310-6494
Photo of Aiysha Ahmed, Nutritionist/Dietitian, MS, RD, CDCES
Aiysha Ahmed
Nutritionist/Dietitian, MS, RD, CDCES
Newark, CA 94560
I'm passionate about nutrition education and helping clients create long term healthy habits through a personalized approach. As an individual we often wear many hats throughout the day. We are often a mother, father, cook, artist, handyman, banker, runner and so much more. By focusing on the common meals you share as a family and your lifestyle needs I will work with you to simplify your meal prep and diversify your diet. I will ensure your nutrition goals are met in timely, yet sustainable manner. As we start our journey together we will set an intention for a healthier and happier you!
I'm passionate about nutrition education and helping clients create long term healthy habits through a personalized approach. As an individual we often wear many hats throughout the day. We are often a mother, father, cook, artist, handyman, banker, runner and so much more. By focusing on the common meals you share as a family and your lifestyle needs I will work with you to simplify your meal prep and diversify your diet. I will ensure your nutrition goals are met in timely, yet sustainable manner. As we start our journey together we will set an intention for a healthier and happier you!
(833) 497-3689 View (833) 497-3689
Photo of Whitney Lau, Nutritionist/Dietitian, RDN
Whitney Lau
Nutritionist/Dietitian, RDN
Online Only
Diagnosed with PCOS? Struggling with digestive issues, period problems, thyroid problems, fertility challenges, or menopause symp? Experiencing symptoms of fatigue, low energy, bloating, acne, and/ or hair loss? If you’re finding it difficult to get answers from your doctor, or if you were simply told "your labs look normal", and are tired of the trial-and-error approach, wasting time and money on random supplements and treatments, know that there's a better solution. You deserve to have the tools to learn how to manage your health issues, heal your body, and feel like yourself while living a life you love to its fullest potential.
Diagnosed with PCOS? Struggling with digestive issues, period problems, thyroid problems, fertility challenges, or menopause symp? Experiencing symptoms of fatigue, low energy, bloating, acne, and/ or hair loss? If you’re finding it difficult to get answers from your doctor, or if you were simply told "your labs look normal", and are tired of the trial-and-error approach, wasting time and money on random supplements and treatments, know that there's a better solution. You deserve to have the tools to learn how to manage your health issues, heal your body, and feel like yourself while living a life you love to its fullest potential.
(510) 726-4221 View (510) 726-4221
Photo of Lisa Cross - Cross into Wellness, Nutritionist/Dietitian, MS, CN, FNTP
Cross into Wellness
Nutritionist/Dietitian, MS, CN, FNTP
Los Gatos, CA 95032
Waitlist for new clients
You are not a cookie, so you will not get a cookie-cutter approach from me! When your body feels inflamed, tired, or you are not feeling like your best self, I’m here to help identify what’s driving your symptoms. Together, we’ll explore the root causes of fatigue, brain fog, and weight resistance through a functional nutrition lens. I use highly personalized strategies which may include functional testing, blood sugar tracking, and targeted diet & lifestyle shifts to support women with metabolic health, gut health challenges, hormonal changes, and autoimmunity to help them feel their best.
You are not a cookie, so you will not get a cookie-cutter approach from me! When your body feels inflamed, tired, or you are not feeling like your best self, I’m here to help identify what’s driving your symptoms. Together, we’ll explore the root causes of fatigue, brain fog, and weight resistance through a functional nutrition lens. I use highly personalized strategies which may include functional testing, blood sugar tracking, and targeted diet & lifestyle shifts to support women with metabolic health, gut health challenges, hormonal changes, and autoimmunity to help them feel their best.
(669) 341-6261 View (669) 341-6261
Photo of Christine Rosche - Digestive Health Center, Nutritionist/Dietitian, BA, MPH, CNS, CBT
Digestive Health Center
Nutritionist/Dietitian, BA, MPH, CNS, CBT
Palo Alto, CA 94306
Do you have Bloating, Gas, Heartburn, GERD, constipation or other digestive issues? Have you been diagnosed with Colitis or Inflammation? Auto Immune Disorder? Do you feel something is not right with your Gut? Are you ready to find and address the Root Cause of your digestive issues? Do you know that 80 percent of your body's immunity is located in the digestive system? That most of your neurotransmitters/serotonin/feel good brain chemicals are made in the gut? Do you know that all Disease starts in the digestive system? Please go to my website at www.digestivehealth.center/watch video SVHI June 2018.
Do you have Bloating, Gas, Heartburn, GERD, constipation or other digestive issues? Have you been diagnosed with Colitis or Inflammation? Auto Immune Disorder? Do you feel something is not right with your Gut? Are you ready to find and address the Root Cause of your digestive issues? Do you know that 80 percent of your body's immunity is located in the digestive system? That most of your neurotransmitters/serotonin/feel good brain chemicals are made in the gut? Do you know that all Disease starts in the digestive system? Please go to my website at www.digestivehealth.center/watch video SVHI June 2018.
(650) 830-7224 View (650) 830-7224
Photo of Brigitta Jansen, Nutritionist/Dietitian, MS, CNS, CDN, CHC
Brigitta Jansen
Nutritionist/Dietitian, MS, CNS, CDN, CHC
1 Endorsed
Online Only
I am a Certified Nutrition Specialist CNS and Certified Health Coach CHC with a MS in Human Nutrition and 7 years of experience as a nutritionist and health coach. I am passionate about helping clients achieve optimum health naturally. My areas of expertise are weight management, diabetes management and prevention, hormone balancing, anti-inflammatory diets, and autoimmune and digestive disorders. I believe restoring gut health is fundamental to improving all kinds of chronic conditions so this is a major focus of my practice. I have helped many clients who are frustrated and don't know what to eat improve or eliminate digestive
I am a Certified Nutrition Specialist CNS and Certified Health Coach CHC with a MS in Human Nutrition and 7 years of experience as a nutritionist and health coach. I am passionate about helping clients achieve optimum health naturally. My areas of expertise are weight management, diabetes management and prevention, hormone balancing, anti-inflammatory diets, and autoimmune and digestive disorders. I believe restoring gut health is fundamental to improving all kinds of chronic conditions so this is a major focus of my practice. I have helped many clients who are frustrated and don't know what to eat improve or eliminate digestive
(917) 818-0992 View (917) 818-0992
Photo of Marina Grant - Nutrition Specialist, Nutritionist/Dietitian, Dr, CNS, LDN, CNHP, CFMP
Nutrition Specialist
Nutritionist/Dietitian, Dr, CNS, LDN, CNHP, CFMP
Serves Area
Health is not everything, but everything is nothing without health! I am a Naturopathic Doctor, Certified Functional Medicine Practitioner, Doctor of Holistic Nutrition, and a Certified Nutrition Specialist licensed in Florida. For the past 15 years I have been engaged in functional and integrative medicine research, mostly focused on cancer and autoimmune disorders. In my work I always combine functional medicine principles with my nutrition knowledge and research experience.
Health is not everything, but everything is nothing without health! I am a Naturopathic Doctor, Certified Functional Medicine Practitioner, Doctor of Holistic Nutrition, and a Certified Nutrition Specialist licensed in Florida. For the past 15 years I have been engaged in functional and integrative medicine research, mostly focused on cancer and autoimmune disorders. In my work I always combine functional medicine principles with my nutrition knowledge and research experience.
(305) 882-9849 View (305) 882-9849
Photo of Janet Laudy - Janet Laudy Nutrition Consulting, Nutritionist/Dietitian, MS
Janet Laudy Nutrition Consulting
Nutritionist/Dietitian, MS
Orinda, CA 94563
I work with a wide range of clients and issues, but my primary niche is in mental health nutrition. I love to work with clients facing the challenges of recovering from alcohol use disorder who want to use nutrition to heal their body and mind. I also focus on nutritional approaches to ADHD, depression, and anxiety.
I work with a wide range of clients and issues, but my primary niche is in mental health nutrition. I love to work with clients facing the challenges of recovering from alcohol use disorder who want to use nutrition to heal their body and mind. I also focus on nutritional approaches to ADHD, depression, and anxiety.
(925) 281-1815 View (925) 281-1815
Photo of Marise Ermelinda d'abreu, Nutritionist/Dietitian, MS, RDN, CDE
Marise Ermelinda d'abreu
Nutritionist/Dietitian, MS, RDN, CDE
1 Endorsed
Serves Area
For the past 30 years, I have helped thousands of clients with their diet-related challenges in this country and abroad. Working in hospitals and my own private practice, I use evidence-based practices in Diabetes Care, Gestational Diabetes, Post Acute Rehab, Skilled Nursing and Renal Care. My years of relevant experience allows me to create a custom nutrition program for your unique health goals. In addition to the science of nutrition, I am an expert on foods of different palates and ethnicities. I am a specialist in vegan, vegetarian and diets related to food intolerances.
For the past 30 years, I have helped thousands of clients with their diet-related challenges in this country and abroad. Working in hospitals and my own private practice, I use evidence-based practices in Diabetes Care, Gestational Diabetes, Post Acute Rehab, Skilled Nursing and Renal Care. My years of relevant experience allows me to create a custom nutrition program for your unique health goals. In addition to the science of nutrition, I am an expert on foods of different palates and ethnicities. I am a specialist in vegan, vegetarian and diets related to food intolerances.
(844) 594-0604 View (844) 594-0604
Photo of Niara Osman, Nutritionist/Dietitian, MS, RDN
Niara Osman
Nutritionist/Dietitian, MS, RDN
Online Only
I believe nutrition should feel supportive, realistic, and empowering—not overwhelming. My approach is personalized and judgment-free, focusing on evidence-based guidance that fits your lifestyle, culture, and goals. Whether you’re working on weight management, gut health, or improving lab values, I partner with you to create sustainable habits that lead to real, lasting results.
I believe nutrition should feel supportive, realistic, and empowering—not overwhelming. My approach is personalized and judgment-free, focusing on evidence-based guidance that fits your lifestyle, culture, and goals. Whether you’re working on weight management, gut health, or improving lab values, I partner with you to create sustainable habits that lead to real, lasting results.
(862) 292-9023 View (862) 292-9023
Photo of Sabine Haake - Sabine Haake RD, Nutritionist/Dietitian, RD
Sabine Haake RD
Nutritionist/Dietitian, RD
Serves Area
We eat at least 3-4 times a day or 21-28 times a week. Eating is an activity we have been engaging in since we were born. We used to know when we were hungry and when we were full. When this energy giving and life sustaining act becomes a source of confusion, guilt and fear, when eating becomes disordered and turns into a dangerous coping mechanism, it is time to evaluate what we are doing and explore how we can normalize our behavior so our minds and body can function in a healthy way to support our goals.
We eat at least 3-4 times a day or 21-28 times a week. Eating is an activity we have been engaging in since we were born. We used to know when we were hungry and when we were full. When this energy giving and life sustaining act becomes a source of confusion, guilt and fear, when eating becomes disordered and turns into a dangerous coping mechanism, it is time to evaluate what we are doing and explore how we can normalize our behavior so our minds and body can function in a healthy way to support our goals.
(415) 233-7588 View (415) 233-7588
Photo of Shaina Painter, Nutritionist/Dietitian, CNS, MS, LDN
Shaina Painter
Nutritionist/Dietitian, CNS, MS, LDN
Online Only
As a trauma-informed, non-diet nutritionist, I specialize in helping people who feel stuck in dieting cycles, body dissatisfaction, or chronic health concerns such as PCOS, thyroid imbalance, and digestive issues. If you’re ready to stop the frustration of restrictive eating and start building a nourishing, sustainable relationship with food and your body, you’re in the right place.
As a trauma-informed, non-diet nutritionist, I specialize in helping people who feel stuck in dieting cycles, body dissatisfaction, or chronic health concerns such as PCOS, thyroid imbalance, and digestive issues. If you’re ready to stop the frustration of restrictive eating and start building a nourishing, sustainable relationship with food and your body, you’re in the right place.
(530) 456-4527 View (530) 456-4527
Photo of Carly R Schott, Nutritionist/Dietitian, MS, RDN
Carly R Schott
Nutritionist/Dietitian, MS, RDN
Online Only
Carly grew up in the San Francisco Bay Area, and she has been a Registered Dietitian Nutritionist (RDN) for the last 11 years. Her interest in nutrition originally stemmed from the experience of being a patient herself, which gave her the drive and motivation to fight for her patients and help others through their own health and nutrition struggles. Carly has worked in acute care hospitals and in outpatient private practice, she has written for professional nutrition blogs, and she has taught numerous university nutrition courses, but her passion lies in providing one-on-one nutrition counseling.
Carly grew up in the San Francisco Bay Area, and she has been a Registered Dietitian Nutritionist (RDN) for the last 11 years. Her interest in nutrition originally stemmed from the experience of being a patient herself, which gave her the drive and motivation to fight for her patients and help others through their own health and nutrition struggles. Carly has worked in acute care hospitals and in outpatient private practice, she has written for professional nutrition blogs, and she has taught numerous university nutrition courses, but her passion lies in providing one-on-one nutrition counseling.
(510) 901-3450 View (510) 901-3450
Photo of Anne Marie DiRocco - Savera Psychological Services, Nutritionist/Dietitian, MS
Savera Psychological Services
Nutritionist/Dietitian, MS
Oakland, CA 94610
Are you ready to conquer health issues, uncover root causes of imbalances, and restore gut health? You're in the right place. I'm a Registered Dietitian with extensive training in biochemistry, medical nutrition therapy, anatomy, physiology, and food science. Let's dig deep, gain clarity, and make sustainable lifestyle shifts through evidence-based nutrition and advanced testing. Together, we'll optimize your health with personalized protocols and collaborative coaching, empowering you to feel your greatest and more connected to your body. To learn more about the services I offer, please visit www.saverapsych.com/nutritioncounseling
Are you ready to conquer health issues, uncover root causes of imbalances, and restore gut health? You're in the right place. I'm a Registered Dietitian with extensive training in biochemistry, medical nutrition therapy, anatomy, physiology, and food science. Let's dig deep, gain clarity, and make sustainable lifestyle shifts through evidence-based nutrition and advanced testing. Together, we'll optimize your health with personalized protocols and collaborative coaching, empowering you to feel your greatest and more connected to your body. To learn more about the services I offer, please visit www.saverapsych.com/nutritioncounseling
(510) 544-6983 View (510) 544-6983
Photo of Norae Berry, Nutritionist/Dietitian, MS, RD, CLT
Norae Berry
Nutritionist/Dietitian, MS, RD, CLT
Serves Area
Conditions/diet therapies I work with often are: Food Allergy/Sensitivity IBS/IBD, Migraines, Fybromyalgia, Weight Management, Metabolic Syndrome, Pre Diabetes and Diabetes, High Cholesterol or High Blood Pressure, low FODMAP, pre-dialysis Kidney Disease, Pregnancy and Breastfeeding, Elite Sports Performance, and Eating Disorders.
Corporate Wellness: every office is interested in nutrition! We are currently providing successful and engaged through virtual group sessions. Hot topics, Q&A sessions, menu review, multi-session classes and more. Email me to set up a complimentary 15 minute phone consult and discuss current presentation titles, and your needs. $500-$2500 per event.
Conditions/diet therapies I work with often are: Food Allergy/Sensitivity IBS/IBD, Migraines, Fybromyalgia, Weight Management, Metabolic Syndrome, Pre Diabetes and Diabetes, High Cholesterol or High Blood Pressure, low FODMAP, pre-dialysis Kidney Disease, Pregnancy and Breastfeeding, Elite Sports Performance, and Eating Disorders.
Corporate Wellness: every office is interested in nutrition! We are currently providing successful and engaged through virtual group sessions. Hot topics, Q&A sessions, menu review, multi-session classes and more. Email me to set up a complimentary 15 minute phone consult and discuss current presentation titles, and your needs. $500-$2500 per event.
(415) 578-6098 View (415) 578-6098
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.