Nutritionists for gastritis and irritable bowel syndrome (IBS)



At NutriWhite, we guide you through the process of restoring your well-being by improving your digestion and healing your digestive system.

We are committed to providing you with the best experience through the scientific approach of our Immunonutrition specialists to help you heal at the root.

With our experts, you'll receive a personalized 3R Protocol

Con nuestros especialistas tendrás  específico para ti que te permitirá tener una buena digestión y recuperar tu vitalidadYou can live without reflux, gastritis, or irritable bowel syndrome!
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How can a nutritionist help treat gastritis?

Having a dietitian-nutritionist specialized in digestive disorders is key to long-term healing because:
  • Identifies foods and infections
    Helicobacter pylori that may be causing your symptoms.
  • Designs a nutrition and supplementation plan focused on restoring the stomach lining and intestinal barrier.
  • Provides constant follow-up, adjusting your diet and protocols based on your progress and the results of your tests.

Eliminate the symptoms of gastritis and irritable bowel syndrome with our services

01
Choose your support:
To heal at the root, we recommend starting with the 5-Consultation Plan to conduct a comprehensive evaluation with close follow-up through the different phases to fully heal your digestive system.
02
Connect to your first consultation:
In-person or online, you will have an evaluation with our specialists, and they will recommend the 3R rotocolo based on your needs.
03
Learn the secrets to good digestion:
You can access our Academy to view the courses and eBooks that will help you learn how to improve your digestion.

Find your ideal nutritionist to
treat gastritis

We have highly trained nutritionists specialized in the symptoms of acute or chronic gastritis, irritable bowel syndrome, or leaky gut.
To provide more precise solutions to our clients in over 84 countries
Dr. Andrés Marcano
  • Autism Spectrum Disorder (ASD)
  • Attention Deficit/Hyperactivity Disorder (ADHD)
  • Pediatrics
  • Online and In-Person Appointments in Caracas, Venezuela
No disponible

Dr. Andrés Marcano

Autism Spectrum Disorder (ASD)
Pediatrics
Attention Deficit/Hyperactivity Disorder (ADHD)
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About me

I am a Pediatrician working and studying autism spectrum disorders since October 2003. I was initially trained by Dr. Lilia Negrón, a pioneer and founder of the study, diagnosis, and treatment of autism spectrum disorders in Venezuela and founder of Sovenia. Since 2004, I have had the opportunity to further my training in the United States through various specialized courses at the Autism Research Institute. I am also a professor in the Diploma Program on Autism Spectrum Disorders at the Faculty of Medicine at the Central University of Venezuela.

Currently, I work at NutriWhite alongside an excellent team of nutritionists who help me support my clients from a nutritional and digestive perspective, aiming to establish a healthy life from childhood, prevent many conditions, and also assist in the treatment of children and adults within the autism spectrum disorders. This field requires daily research and study on my part to stay up-to-date with new studies, scientific advancements, treatment modalities, and their practical application to each individual.

I start my day with a coffee, enjoying the view of Ávila and thanking God, asking for His help to be useful to others. I really enjoy spending time with my family, which is the most important thing to me. I love reading, both medical literature and other topics such as history and biographies. Whenever I can, I escape to the beach.

How do I work?

For me, it is very important to get to know each other in order to establish a relationship of trust. A fundamental part of the effectiveness of any treatment is to thoroughly understand the patient's history and background to identify possible causes contributing to the current symptoms. Then, it is important to rely on laboratories that allow us to complete the diagnosis with more precision, enabling us to act more effectively. Finally, it’s crucial to understand that improvement is a process, and that communication and follow-up are essential to make the necessary adjustments for each individual case.

Studies and carreer path
  • M.D. - Central University of Venezuela
  • Pediatrician - Domingo Luciani Hospital
  • 20 years of experience in autism (since October 2003).
  • Trained in specialized courses for doctors at the Autism Research Institute.
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Pay in installments with no interest
MSc. Andreina White
  • Autism Spectrum Disorders (ASD)
  • Allergies and Immunological Disorders
  • Gastrointestinal Disorders
  • Autoimmune Diseases
  • Online Consultations
No disponible

MSc. Andreina White

Autism Spectrum Disorder (ASD)
Allergies, immune disorders
Gastrointestinal disorders
Autoimmune Diseases
Book consultation
About me

I'm a mom and wife. Energetic. A natural motivator. Active. I love nature, people, and community. I'm deeply dedicated to my inner growth journey, continuously discovering more about my vulnerability and sensitivity. I live in California, and we love exploring it by camping. We enjoy cycling and kitesurfing. I'm driven by the desire to leave something meaningful in the world, be an example of a legacy of service, and connect with others.

My mission is to provide tools to help transform lives. In addition to offering consultations, I work daily on the growth of NutriWhite as a company. Alongside my mom and sister, I work hard to spread the message of immunonutrition worldwide and help people believe in and adopt this wonderful philosophy in their lives.

How do I work?

Connecting with you. Understanding and defining your needs and goals. By learning about your story and background, I aim to provide you with the best and most effective tools from a holistic perspective.

Studies and carreer path

Co-Founder and Director of NutriWhite:

  • Bachelor’s Degree in Nutrition and Dietetics
    School of Nutrition and Dietetics, Department of Medicine, Central University of Venezuela.
  • Master’s Degree in Immunology
    University of Barcelona, Department of Biology.
  • Master’s Degree in Nutrition and Metabolism
    University of Barcelona, Department of Pharmaceutical Sciences.
Back to plans
Pay in installments with no interest

Testimonials and reviews

Over 20,000 people have achieved a healthy lifestyle thanks to our services.

Frequently asked questions
about gastritis and irritable bowel syndrome

What are the symptoms and causes of gastritis?

What can I eat if I have gastritis?

What should I avoid eating with gastritis?

Why choose NutriWhite?

Llegamos a Nutriwhite después de muchas preocupaciones por la salud de nuestro hijo y a pesar del muy poco tiempo que llevamos de tratamiento con nuestro hijo, ya hemos visto muy buenos avances en él. Son muy profesionales, me gusta mucho la ayuda que brindan y sobre todo la valiosa información que comparten para mantenernos saludables y hacernos muy conscientes del impacto que tiene una buena alimentación en nuestras vidas y en nuestro día a día. Un agradecimiento especial a la nutricionista Fabiana y al Doctor Marcano por ayudarnos es de esta manera.

Dariana Pirela

I’m truly very satisfied and grateful to both Dr. Marcano and Lic. Natalia. They are extremely professional and attentive in answering every question to help my son Luciano keep progressing. Thank you. :)

Irina Machado

Since my son Marlon came to Nutriwhite, I can say that the person he is today is completely different. He arrived with no vocabulary, extreme stereotypies, bleeding eczema, extreme food selectivity, and significant abdominal bloating. I’m getting my son back. Nothing has been easy, but hearing my son call me “mom” makes it all worth it. Thank you, Nutriwhite team.

Selene Flores

«Después de tener 3 meses estancada con mi peso, haciendo muchas cosas sin ver cambios, logré bajar casi 4 kilos en un mes con NutriWhite. Y no solamente son los 4 kilos que bajé porque esa ya no es mi prioridad, es lo increíblemente bien que me he sentido. Yo era una persona con muchísimos cambios de humor, había días que no me quería parar de la cama y últimamente me siento una persona alegre, feliz, con energía, demasiado motivada a hacer todo»

Daniela

“I’ve been applying it for a month and a half and I’m quite happy. I feel energized. I had constipation issues and I believe I’m overcoming them naturally through nutrition. I’m very happy because I used to rely heavily on pills or medications to help me go to the bathroom, and I’m no longer taking them. Overall, I also feel lighter and no longer feel bloated after eating. In general, I’m very satisfied. I started off very motivated and now I not only remain highly motivated but also more confident in maintaining it.”

María Isabel Ramirez

“I visited many doctors. I had a lot of gas, cramps, diarrhea... and none of the doctors gave me a real solution. I heard about the people at NutriWhite and got really excited because what they were saying truly reflected what I was feeling. They ordered a series of tests and gave me a diet with zero grains and zero dairy. I began to feel better, started to lose my fear of food, and felt supported because they follow up on how you’re feeling and how you’re doing… and something I never thought was related—the joint pain—it’s unbelievable. Now I can open and close my fingers without pain or discomfort. Plus, I’ve gained weight—from 52 kilos, I’ve put on weight. I feel so much better and very grateful to the people at NutriWhite. Honestly, I think they’ve done an incredible job, and I’ve also been a very committed patient.”

Elvia Matheus

“I can’t even believe how good I feel. I no longer have any gas or stomach pain when I eat. I used to have trouble sleeping, waking up many times for no reason, and now I only wake up once. My hair was extremely dry and would fall out just from brushing it, and now it no longer falls out. I also used to feel cold even in the heat. I no longer have cold feet or hands. On top of that, I’ve lost a lot of weight... There have been so many changes.”

Guadalupe Urban

“I’ve noticed so many changes since completely eliminating gluten, dairy, and refined sugar. The first and most noticeable change was the reduction in abdominal bloating. Second, I used to sneeze every single day of my life, and I simply stopped sneezing and no longer have a stuffy nose. Third, although I’ve lost weight, what I’ve enjoyed most about the 3R Protocol is that for the first time, I stopped counting calories and just focused on the nutrients entering my body. On top of that, I’ve felt extremely energetic. I’m sleeping much better, and it was all simply due to changes in my diet.”

Manuela Lorenzo

“I love gluten, but unfortunately it harms me a lot. So, I decided to take on a challenge. I go between 20 to 40 days—depending on how much willpower I have—without eating gluten, and the results are incredible. When I eat gluten, within a minute, I have an allergic reaction; my mouth and eyes start itching... So, I like gluten, but I know it’s bad for me. My plan is to become a gluten-free person and follow a completely healthy diet.”

María Alesia Machado

“In less than 3–4 weeks, just by changing my diet, my thyroid levels improved significantly. My thyroid was at level 9 and dropped to 3.3. I’m super happy and I now realize how food and a healthy lifestyle can truly support your he“It’s been amazing how much my health has improved. I had been dealing with various issues for a long time—headaches, dizziness, bloating—things I lived with daily. I had seen many doctors, and after not finding a solution through conventional medicine, a friend told me about NutriWhite. It has changed my life.”alth.”

María Fernanda Cifuentes

“It’s been amazing how much my health has improved. I had been dealing with various discomforts for a long time—headaches, dizziness, bloating—things I lived with on a daily basis. I had visited many doctors, and after not finding a solution through conventional medicine, a friend told me about NutriWhite. It has changed my life.”

Daniela Nogueira

“For me, it has been a positive, healing experience—not only for my body but also internally—because all these gastrointestinal issues end up affecting your emotional well-being, as it’s very frustrating. Having proper guidance on how I should nourish myself is something truly beautiful. Re-educating myself in that aspect has been very positive, not just for me but also for my family.”

Marcela Paredes

“Anthony’s progress has been very good. We’re very happy because he used to speak very little and now he’s talking more, expressing himself more—even singing. We’ve seen very positive changes in less than a month.”

Lizzette

“It’s been a tough journey, but it’s been worth it. The first results we noticed were the improvements in our family’s quality of life due to all the progress he made. His sleep issues and recurrent infections are now under control. He’s also improved his attention span and his initiative to communicate and interact. We’re very happy with these results.”

Natalia Sánchez

“James is more connected, more alert. He’s progressing quickly in speech therapy. He started attending a regular school and is doing really well. He knows the entire ABC. He has improved a lot. I’m extremely happy and surprised by how fast it’s all happened."

Jenice García

Becoming a Nutriwhite patient has been one of the best decisions I’ve ever made. I’m infinitely grateful to the entire team of professionals for the quality of their service and for how they’ve transformed my life.

Clara Cárdenas

I have no words to express the outstanding level, knowledge, and professionalism of the Nutriwhite Team! They changed my life, and I finally found out which foods weren’t good for me! I 100% recommend them!

Dalix Sánchez

The consultation was truly very good, with great attentiveness. I was satisfied because they make sure you understand the process and feel supported throughout it.

Paula Melendez

I’ve been part of NutriWhite for several years. They have supported me through various stages of my life, including my pregnancy and now postpartum. For me, having the guidance of each person who is part of NutriWhite has been essential.

Laura Benítez

I’m very happy with NutriWhite. I went through my pregnancy with them and I’m now going through my postpartum as well. The progress has been incredible, and the mental and physical improvement is beyond words. I recommend them with my eyes closed.

Gabriela Lopes

The interview with Mariana was truly comprehensive, and one of the things I find very special is the motivational support through chat—we get answers and information in a short amount of time. Congratulations! Thank you so much.

Lucy Perrone De Ramos

My skin allergies never came back, and managing my food sensitivities has been a complete success.

Ysabel Jiménez

To me, Vero is simply unbeatable—she’s very approachable and answers all my doubts and questions. I’m very happy with her; she addresses every symptom with precise guidance and the right supplements, and her attitude keeps me motivated to continue.

Esperanza Guerrero

I really liked the consultation because it focuses on addressing the health issue promptly and adapts to my preferences—for example, they take into account the foods I like to eat.

Zulay Medina

Carol explains things wonderfully; she is very professional and at the same time very friendly. She knows her field and speaks with expertise. I loved being her patient and I will continue to be for future consultations.

Glisby Acosta

Very satisfied with the care from Dr. Julie Verzura and nutritionist Andrea. I love the dietary plan, the ease of getting the recommended vitamins and other supplements. Overall, super happy with NutriWhite.

Morella Pérez

Each day I feel better and see that I can keep learning to make recipes with foods that help me feel good.

Mónica González

The whole experience is unbeatable! They truly exceeded my expectations. I really appreciate the educational aspect of the consultation (explaining to the patient what gut health is about, etc.). All the logistics and organization before, during, and after the consultations have been incredible!

Valentina Vallenotti

3R Protocol

Remove
Foods, infections, or hormonal imbalances that cause inflammation.
Restore
With foods, nutrients, and habits that improve your metabolism and support truly healthy eating.
Recover
Your well-being, your energy, and your long-term body satisfaction.