Food Sensitivity Nutritionists and Dietitians in San Bernardino County, CA
Nutrition by Gwen Consulting
Nutritionist/Dietitian, MPH, RD, CLT
1 Endorsed
Rancho Cucamonga, CA 91730
I specialize in LEAP [Lifestyle, Eating & Performance] Therapy, Food sensitivity and toxic immune food reactions.
If you are experiencing food sensitivities related to migraines, Irritable Bowel Syndrome, Crohn's or any digestive abnormalities then you have landed on the right website. Get tested to identify foods that are triggering inflammation. Others report significant improvement when following the LEAP/MRT Anti-inflammatory food plan. Also specializing in weight loss, diabetes management, alternative & functional nutrition with a Food as Medicine approach.
I specialize in LEAP [Lifestyle, Eating & Performance] Therapy, Food sensitivity and toxic immune food reactions.
If you are experiencing food sensitivities related to migraines, Irritable Bowel Syndrome, Crohn's or any digestive abnormalities then you have landed on the right website. Get tested to identify foods that are triggering inflammation. Others report significant improvement when following the LEAP/MRT Anti-inflammatory food plan. Also specializing in weight loss, diabetes management, alternative & functional nutrition with a Food as Medicine approach.
Hello! I'm a Registered Dietitian Nutritionist who is passionate about nutrition for children with Autism. As a nutrition professional and mother of a child with autism, I bring a unique blend of expertise and personal understanding to nutrition coaching sessions. I understand the feeding and nutrition challenges that a child with Autism may experience. These challenges include picky eating, GI issues, tube feeding, failure to grow, and more. I help families by getting to the root cause of the issues and coming up with a personalized nutrition plan to help their child thrive.
Hello! I'm a Registered Dietitian Nutritionist who is passionate about nutrition for children with Autism. As a nutrition professional and mother of a child with autism, I bring a unique blend of expertise and personal understanding to nutrition coaching sessions. I understand the feeding and nutrition challenges that a child with Autism may experience. These challenges include picky eating, GI issues, tube feeding, failure to grow, and more. I help families by getting to the root cause of the issues and coming up with a personalized nutrition plan to help their child thrive.
Every person is unique and my goal is to support your personal health & performance goals with a customized plan. Sessions can be scheduled in person or remotely. I believe in Testing, Not Guessing! Micro-nutrient Levels, Microbiome Test or our Food & Chemical Sensitivity Testing can be completed when local or when on the move. Onsite services also include Body Composition & Metabolic Testing, workshops & seminars and camp support! NEW! Respiratory Training will help you achieve your personal best at altitude or in the gym!. Personalized Probiotics and Supplement Recommendations to match your body type and goals!
Every person is unique and my goal is to support your personal health & performance goals with a customized plan. Sessions can be scheduled in person or remotely. I believe in Testing, Not Guessing! Micro-nutrient Levels, Microbiome Test or our Food & Chemical Sensitivity Testing can be completed when local or when on the move. Onsite services also include Body Composition & Metabolic Testing, workshops & seminars and camp support! NEW! Respiratory Training will help you achieve your personal best at altitude or in the gym!. Personalized Probiotics and Supplement Recommendations to match your body type and goals!
Tracy has worked in the health and fitness industry for over 30 years as a Registered Dietitian and Personal Trainer. She truly believes that proper nutrition and exercising regularly is fuel for the body and soul. Specialties: Diabetes, Weight Loss, High Blood Pressure, Cholesterol, Digestive Issues, Food Sensitivities, Sports Nutrition.
Tracy has worked in the health and fitness industry for over 30 years as a Registered Dietitian and Personal Trainer. She truly believes that proper nutrition and exercising regularly is fuel for the body and soul. Specialties: Diabetes, Weight Loss, High Blood Pressure, Cholesterol, Digestive Issues, Food Sensitivities, Sports Nutrition.
Have you recently been diagnosed with pre-diabetes, diabetes, high blood pressure or high cholesterol? Or, are you chronically plagued with the pain or discomfort of IBS, Migraines or Fibromyalgia? Has eating, the one thing you always felt you could control, now begun to feel it is controlling you? Missy has helped hundreds of people overcome and reverse health conditions, establish healthy food relationships, get off the dieting roller coaster, and learn how to have an ENJOYABLE lifestyle full of energy.
Have you recently been diagnosed with pre-diabetes, diabetes, high blood pressure or high cholesterol? Or, are you chronically plagued with the pain or discomfort of IBS, Migraines or Fibromyalgia? Has eating, the one thing you always felt you could control, now begun to feel it is controlling you? Missy has helped hundreds of people overcome and reverse health conditions, establish healthy food relationships, get off the dieting roller coaster, and learn how to have an ENJOYABLE lifestyle full of energy.
I have a diverse background in clinical, community, & sports nutrition settings. I specialize in working with eating disorders, disordered eating, & performance nutrition. I am passionate about a holistic and somatically attuned approach to cultivating a peaceful relationship with food, the body, & movement. I provide counseling & education from a weight-inclusive, non-diet perspective. I've worked with people of all ages and backgrounds. As a woman of color, I find fulfillment in helping those with marginalized identities. I feel a great sense of purpose working alongside people to help them build a strong mind-body connection.
I have a diverse background in clinical, community, & sports nutrition settings. I specialize in working with eating disorders, disordered eating, & performance nutrition. I am passionate about a holistic and somatically attuned approach to cultivating a peaceful relationship with food, the body, & movement. I provide counseling & education from a weight-inclusive, non-diet perspective. I've worked with people of all ages and backgrounds. As a woman of color, I find fulfillment in helping those with marginalized identities. I feel a great sense of purpose working alongside people to help them build a strong mind-body connection.
We are highly experienced dietitians that focus on our clients individual needs in a way that feels realistic and attainable. We treat all conditions including eating disorders, diabetes, heart disease, women's health issues, gastrointestinal disorders, sports nutrition, allergies, family nutrition, intuitive eating and more. We are currently accepting new 1:1 clients via in office and telehealth. We are in-network with IEHP, TriWest, Anthem Blue Cross, Blue Shield of CA, United Healthcare, Medicare, and Health Net. With our clients we focus on attainable health behaviors for sustainable health and wellness.
We are highly experienced dietitians that focus on our clients individual needs in a way that feels realistic and attainable. We treat all conditions including eating disorders, diabetes, heart disease, women's health issues, gastrointestinal disorders, sports nutrition, allergies, family nutrition, intuitive eating and more. We are currently accepting new 1:1 clients via in office and telehealth. We are in-network with IEHP, TriWest, Anthem Blue Cross, Blue Shield of CA, United Healthcare, Medicare, and Health Net. With our clients we focus on attainable health behaviors for sustainable health and wellness.
Online Dietitians and Nutritionists
My approach to care is to address the whole person not just the diagnosis. As an experienced nutrition expert, I have worked for the past 15 years helping individuals improve their lives and maintain their health with nutrition therapy, positive mindsets and fitness. I believe strongly that food plays one of the biggest roles in our life with regard to maintaining our health and healing our bodies. Therefore, I believe that the food we consume should be a top priority in our lives.
My approach to care is to address the whole person not just the diagnosis. As an experienced nutrition expert, I have worked for the past 15 years helping individuals improve their lives and maintain their health with nutrition therapy, positive mindsets and fitness. I believe strongly that food plays one of the biggest roles in our life with regard to maintaining our health and healing our bodies. Therefore, I believe that the food we consume should be a top priority in our lives.
I became a dietitian because I believe food should nourish both the body and the spirit. Too often, people living with chronic conditions are told what they can’t eat, leaving them feeling restricted, overwhelmed, and disconnected from their culture and traditions. I approach nutrition differently.
I became a dietitian because I believe food should nourish both the body and the spirit. Too often, people living with chronic conditions are told what they can’t eat, leaving them feeling restricted, overwhelmed, and disconnected from their culture and traditions. I approach nutrition differently.
I work with busy professionals battling digestive concerns, weight gain, fatigue, and blood sugar swings from hectic schedules. We get to the root cause of their concerns to create simple, sustainable changes so they can feel their best and focus on what matters most to them (ie. building a business, enjoying time with family/friends, being productive, living their best life, etc.).
I work with busy professionals battling digestive concerns, weight gain, fatigue, and blood sugar swings from hectic schedules. We get to the root cause of their concerns to create simple, sustainable changes so they can feel their best and focus on what matters most to them (ie. building a business, enjoying time with family/friends, being productive, living their best life, etc.).
Do you feel like you can't control your eating food- related behaviors ? Do you see yourself as "fat" when others see you as too thin? Would you say that food and thoughts about food dominate your life? You don't have to be alone in your struggle. My specialized and experienced empathetic approach focuses on you and your personal experience . The science of nutrition is important but struggling clients need support with their emotions around food and eating. Plan of care and recovery is developed carefully with your involvement.
Do you feel like you can't control your eating food- related behaviors ? Do you see yourself as "fat" when others see you as too thin? Would you say that food and thoughts about food dominate your life? You don't have to be alone in your struggle. My specialized and experienced empathetic approach focuses on you and your personal experience . The science of nutrition is important but struggling clients need support with their emotions around food and eating. Plan of care and recovery is developed carefully with your involvement.
Many people want to feel healthier, more energized, and confident in their bodies—but feel stuck after trying countless diets or conflicting advice. They may be struggling with weight, hormonal changes, or medical conditions like diabetes or high cholesterol. They’re looking for sustainable guidance, accountability, and a caring expert who helps them make real progress without restriction or judgment.
Many people want to feel healthier, more energized, and confident in their bodies—but feel stuck after trying countless diets or conflicting advice. They may be struggling with weight, hormonal changes, or medical conditions like diabetes or high cholesterol. They’re looking for sustainable guidance, accountability, and a caring expert who helps them make real progress without restriction or judgment.
Do you struggle with digestive issues like IBS, bloating, or GERD—or feel stuck when it comes to your weight or relationship with food?
Even when you think you’re doing everything right, nothing seems to work?
You don’t need another diet. You need a clear, personalized approach that actually works for your body and your life.
If you're ready to feel better, gain clarity around food, and finally have a plan that works, I’d love to help you get started.
Do you struggle with digestive issues like IBS, bloating, or GERD—or feel stuck when it comes to your weight or relationship with food?
Even when you think you’re doing everything right, nothing seems to work?
You don’t need another diet. You need a clear, personalized approach that actually works for your body and your life.
If you're ready to feel better, gain clarity around food, and finally have a plan that works, I’d love to help you get started.
Are you confused about what to eat? Are you looking to keep muscle while on a GLP-1? . Are you diabetic or trying to prevent diabetes or other chronic diseases? Do you suffer with food allergies or sensitivities? Do you display disordered eating, or eating disorder behaviors? Let's form a "team" to help improve your labs, lose or gain weight, and make lasting changes without feeling deprived. I currently work in doctors' offices and hospitals, keeping up-to-date on the latest research. I also accept most Insurance, and Medicare. If you need to pay out of pocket, I will work with your budget. It's time to "Move to Wellness!"
Are you confused about what to eat? Are you looking to keep muscle while on a GLP-1? . Are you diabetic or trying to prevent diabetes or other chronic diseases? Do you suffer with food allergies or sensitivities? Do you display disordered eating, or eating disorder behaviors? Let's form a "team" to help improve your labs, lose or gain weight, and make lasting changes without feeling deprived. I currently work in doctors' offices and hospitals, keeping up-to-date on the latest research. I also accept most Insurance, and Medicare. If you need to pay out of pocket, I will work with your budget. It's time to "Move to Wellness!"
I believe in an All Foods Fit Philosophy, and take a non-diet approach to meal planning by incorporating the principles of Intuitive Eating. I enjoy working with clients who are motivated to change their relationship with food. We live in a world full of pressure around food and ideas around "good and bad" and "should and shouldn't." If you want to go the anti-diet route and heal your relationship with food and your body or if you are looking to stop the diet cycling then you may enjoy working together as well.
I believe in an All Foods Fit Philosophy, and take a non-diet approach to meal planning by incorporating the principles of Intuitive Eating. I enjoy working with clients who are motivated to change their relationship with food. We live in a world full of pressure around food and ideas around "good and bad" and "should and shouldn't." If you want to go the anti-diet route and heal your relationship with food and your body or if you are looking to stop the diet cycling then you may enjoy working together as well.
Do you want to improve your cardiometabolic health, manage weight, blood sugar, cholesterol, gut health, or inflammation? Struggling with mood issues? Using GLP-1 therapies (Ozempic, Mounjaro)? Are you experiencing hormone imbalances or performance issues? Curious about keto? I specialize in uncovering root causes and creating personalized, evidence-based nutrition and lifestyle plans. My approach uses Medical Nutrition Therapy to address your unique needs, not just symptoms. Let me help you achieve your health goals with a sustainable, personalized plan tailored to your concerns and health goals.
Do you want to improve your cardiometabolic health, manage weight, blood sugar, cholesterol, gut health, or inflammation? Struggling with mood issues? Using GLP-1 therapies (Ozempic, Mounjaro)? Are you experiencing hormone imbalances or performance issues? Curious about keto? I specialize in uncovering root causes and creating personalized, evidence-based nutrition and lifestyle plans. My approach uses Medical Nutrition Therapy to address your unique needs, not just symptoms. Let me help you achieve your health goals with a sustainable, personalized plan tailored to your concerns and health goals.
Food Sensitivities: I utilize Leap MRT food sensitivity testing that enables the identification of specific food triggers that may be contributing to health issues and inflammation
As a compassionate Dietitian with 17 years of experience specializing in functional nutrition, I'm dedicated to helping you discover the root causes of your health challenges. I understand firsthand the journey of battling autoimmune diseases, gut issues, and thyroid imbalances, as I have navigated similar paths in my own life. I'm particularly passionate about working with individuals who have been told there's nothing wrong with them even though they don't feel well. My approach is tailored to your specific needs and can be conducted conveniently through Zoom, ensuring accessibility and flexibility on your journey to better health
Food Sensitivities: I utilize Leap MRT food sensitivity testing that enables the identification of specific food triggers that may be contributing to health issues and inflammation
As a compassionate Dietitian with 17 years of experience specializing in functional nutrition, I'm dedicated to helping you discover the root causes of your health challenges. I understand firsthand the journey of battling autoimmune diseases, gut issues, and thyroid imbalances, as I have navigated similar paths in my own life. I'm particularly passionate about working with individuals who have been told there's nothing wrong with them even though they don't feel well. My approach is tailored to your specific needs and can be conducted conveniently through Zoom, ensuring accessibility and flexibility on your journey to better health
I support adults (18+) in healing their relationship with food and their bodies through intuitive eating and body positivity. I guide my clients away from the rigid constraints of diet culture toward a trusting, intuitive approach. Many feel stuck in the never-ending pursuit of weight loss, uncertain about what truly works and overwhelmed by conflicting advice. If you’re ready to explore a compassionate, sustainable way to reconnect with your body’s innate wisdom and achieve a balanced, joyful life, I’m here to help.
I support adults (18+) in healing their relationship with food and their bodies through intuitive eating and body positivity. I guide my clients away from the rigid constraints of diet culture toward a trusting, intuitive approach. Many feel stuck in the never-ending pursuit of weight loss, uncertain about what truly works and overwhelmed by conflicting advice. If you’re ready to explore a compassionate, sustainable way to reconnect with your body’s innate wisdom and achieve a balanced, joyful life, I’m here to help.
Are you struggling with persistent digestive issues, feeling overwhelmed by endless doctor appointments, or frustrated by the lack of clear solutions? You're not alone, and I'm here to help. I'm Jessica Martinez, a Registered Dietitian specializing in gastrointestinal (GI) health and weight management, dedicated to uncovering the root causes of your symptoms and helping you achieve lasting wellness.
Are you struggling with persistent digestive issues, feeling overwhelmed by endless doctor appointments, or frustrated by the lack of clear solutions? You're not alone, and I'm here to help. I'm Jessica Martinez, a Registered Dietitian specializing in gastrointestinal (GI) health and weight management, dedicated to uncovering the root causes of your symptoms and helping you achieve lasting wellness.
Food, a critical component of health, has the power to heal. I take a holistic approach using the healing power of food and simple lifestyle adjustments to address your health issues at their root cause. We start with a full dietary, medical, and lifestyle assessment to better understand your unique situation, genetics, and health goals. Then, together, you and I will create a personalized, science-based nutrition program designed to address your health conditions and provide you with overall optimum health. You deserve to live a full and vibrant life.
Food, a critical component of health, has the power to heal. I take a holistic approach using the healing power of food and simple lifestyle adjustments to address your health issues at their root cause. We start with a full dietary, medical, and lifestyle assessment to better understand your unique situation, genetics, and health goals. Then, together, you and I will create a personalized, science-based nutrition program designed to address your health conditions and provide you with overall optimum health. You deserve to live a full and vibrant life.
Food Sensitivity Nutritionists and Dietitians
What is a food sensitivity?
A food sensitivity is a condition where an individual has difficulty digesting certain foods, leading to symptoms such as abdominal pain, bloating, diarrhea, and rashes. The exact causes of food sensitivities are not well understood, and the symptoms and triggers can vary greatly from person to person. However, some foods are more likely to cause sensitivities, including gluten, soy, eggs, dairy, and certain food additives like artificial colors and sweeteners.
What is the difference between a food sensitivity and a food allergy?
Food allergies involve an immediate immune system response to a specific food, while food sensitivities result from the digestive system reacting to certain foods. Although both can cause similar symptoms, such as rashes and abdominal pain, allergic reactions typically occur much faster than sensitivity reactions. Allergic reactions can happen as soon as the allergen is ingested, whereas food sensitivity symptoms may appear 24-48 hours after consuming the triggering food. In severe cases, allergic reactions can impair breathing and require immediate medical attention, whereas food sensitivities rarely affect the airway and usually do not need urgent care.
Can food sensitivities be cured?
Currently, there are no definitive treatments for food sensitivities. Unlike food allergies, which children can sometimes outgrow or treat with early exposure to allergens or immunotherapy, food sensitivities do not generally respond to these methods. Thus, the best way to minimize symptoms is usually to avoid the foods that trigger symptoms. In rare cases, food sensitivities may resolve on their own, but, for most people, avoiding the problematic food is the only effective long-term way to manage symptoms.
Should I get food sensitivity testing?
There is little evidence to support the efficacy of food sensitivity testing. Unlike food allergy testing, which measures the body's immune response to certain foods, there are few reliable methods to assess the digestive distress associated with food sensitivities. Individuals experiencing symptoms of food sensitivity but unable to identify the triggering foods, however, may benefit from elimination diets. These diets involve cutting out certain foods to determine which ones cause symptoms. Identifying the problematic foods allows individuals to avoid them in the future, ideally eliminating their digestive issues.