ImmunotherapyInstitute

— Digestive System

Stomach Cancer Treatment in Mexico

Comprehensive treatment plans designed to address digestive health and tumor progression.

Stomach cancer, also known as gastric cancer, is a serious condition that often develops gradually and may not show clear symptoms in its early stages. At Immunotherapy Institute, we offer a comprehensive, integrative approach that combines advanced medical treatments with immune system support—designed to help patients manage the disease while maintaining quality of life.

What Is Stomach Cancer?

Stomach cancer develops when abnormal cells grow in the lining of the stomach. It can vary depending on the type of cells involved, with different forms requiring different treatment approaches.

In some cases, long-term conditions such as chronic inflammation or infections like H. pylori may increase the risk. Because symptoms often appear later, early evaluation and personalized care are essential.

Symptoms of Stomach Cancer

In early stages, symptoms may be mild or go unnoticed. As the condition progresses, patients may experience:

  • Unexplained weight loss
  • Upper abdominal pain or discomfort
  • Loss of appetite or feeling full quickly
  • Nausea or fatigue

Diagnosis and Conventional Treatment

Diagnosis typically involves procedures such as endoscopy and biopsy to examine the stomach lining and confirm the presence of cancer. Imaging studies like CT scans may also be used to determine the stage of the disease.

Treatment often includes surgery to remove part or all of the stomach, combined with chemotherapy, radiation therapy, or immunotherapy depending on the stage and progression of the cancer.

An Integrative Approach to Stomach Cancer Treatment

At Immunotherapy Institute, we complement conventional oncology with therapies designed to strengthen the immune system and support the body’s ability to respond to treatment. Our approach focuses not only on controlling tumor growth, but also on improving overall health and resilience.

Treatment plans may include advanced immunotherapy, metabolic and nutritional support, and therapies aimed at enhancing treatment effectiveness while minimizing side effects. Each program is personalized based on the patient’s diagnosis, condition, and medical history.

Supporting the Body Throughout Treatment

Maintaining strength and balance during treatment is essential, especially for patients undergoing digestive system therapies. Our programs include targeted nutrition, immune support, and carefully selected therapies designed to help patients better tolerate treatment and maintain their quality of life.

By supporting digestion, reducing inflammation, and promoting cellular health, we aim to create an environment that supports recovery and long-term wellness.

Personalized Care for Every Patient

Every case of stomach cancer is unique. That’s why we take the time to understand your full medical history, lifestyle, and goals before designing a treatment plan. Our multidisciplinary team works closely with you throughout the process, adapting your care as needed to support both immediate progress and long-term outcomes.

Explore Your Treatment Options

If you or a loved one has been diagnosed with stomach cancer, our team is here to help you understand your options and take the next step with confidence.

Treatment takes place at our cancer treatment center in Tijuana, Mexico, about 20 minutes from the San Diego border. Our team coordinates your pickup in San Diego, your lodging and your schedule, and a free case review tells you what a treatment plan for stomach cancer would look like before you commit to anything.

— Common integrative treatments

How we approach Stomach Cancer

Immunotherapy+

The goal of cancer immunotherapy is to improve the body natural ability to find and destroy cancer cells. Successful immunotherapeutic approaches stimulate the natural defenses of the immune system and provide new ways to attack cancer. This is possible with comprehensive interventions that include cell therapy / immuno-pharmacological therapy in combination with nutritional, endocrine measures and supplements.

Vaccines+

Cancer vaccines deliver a cancer-specific protein to the body and direct the immune system to target cells that contain that protein.Chimeric antigen receptor (CAR)-modified T-cell immunotherapy involves taking the patient’s Tcells, genetically engineering the T cells to produce receptors that direct them to the cancer cells, and returning these CAR T cells to the patient’s body (NCI 2017b).

Hyperthermia+

Hyperthermia involves the use of heat to directly treat a tumor or increase the vulnerability of cancer cells to other forms of treatment, such as immunotherapy, vitamin C, chemotherapy or radiotherapy.

Non-ablative or mild hyperthermia (HT) has been shown in preclinical and clinical studies as a localized sensitizer that enhances the tumoricidal effects of immunotherapy, radiation or chemotherapy.

A novel, minimally invasive interventional technique, HT has been shown to improve the efficacy of chemotherapy and immunotherapy for solid organ tumors.

Gluthatione+

Glutathione is the most important antioxidant produced by your body and a master detoxifier of every cell in your body. It prevents cellular damage caused by free radicals and peroxides.

Glutathione metabolism can play both protective and pathogenic roles. It is crucial in the removal and detoxification of carcinogens, and alterations in this pathway can have a profound effect on cell survival. However, by conferring resistance to several chemotherapeutic drugs, elevated levels of glutathione in tumor cells can protect such cells.

Related reading

Questions? We've got answers.

Is immunotherapy used for stomach cancer?+

Yes, for some patients. Immunotherapy may help gastric cancers with high PD-L1 expression or MSI-high status. We review your tumor testing and treatment history to decide if immune-based treatment should be part of your plan.

Can stomach cancer that has spread to the abdomen be treated?+

In selected cases, yes. When cancer has spread to the lining of the abdomen, our team may evaluate you for the HIPEC procedure, which combines surgery with heated chemotherapy. Careful selection is key.

What is HER2 testing and why does it matter for gastric cancer?+

Some stomach cancers make too much of a protein called HER2. Knowing your HER2 status helps us decide if targeted therapy can help. If your tumor has not been tested, we will tell you how to arrange it.

How do you support nutrition during stomach cancer treatment?+

Weight loss and poor appetite are common with stomach cancer. Our cellular nutrition program builds a personalized plan to help you keep strength and tolerate treatment better.

How long does treatment take?+

It depends on your protocol. Treatment often starts within two weeks of your first consultation. We give you a clear timeline during your free case review.

How do you handle complications or side effects?+

Patients are monitored daily during treatment. Side effects are tracked, documented and addressed in real time, sometimes with medication adjustments, sometimes with supportive therapy, and occasionally by pausing a treatment. The treating physician reviews the patient's status every day the patient is on-site.

Can I continue treatments I'm already on at home?+

Usually yes, but it depends on the specific medication and how it interacts with our protocol. Bring a complete medication list to the consultation. We coordinate with your home physician where possible.

Will my treatment plan change while I'm here?+

Sometimes. Blood work, imaging and response markers are checked during your stay, and the protocol is adjusted if the data suggests it should be. Any meaningful change is reviewed with you before it's implemented.

How is my treatment plan decided?+

After we receive your medical records, imaging and pathology, your case is reviewed by the medical board. They draft a proposed protocol: which therapies, in what sequence, over how many days. You then have a consultation with the treating physician to review it, ask questions and adjust before anything begins.

Do you offer CAR-T therapy?+

Yes, we offer CAR-T therapy in addition to our broader autologous immunotherapy program. Both are built on the same core principle: collecting the patient's own immune cells, engineering or activating them to better recognize cancer, and reinfusing them to do the work. Which approach fits your case, and how it's delivered, is reviewed during the medical consultation.

What supportive therapies do you offer?+

IV vitamin C, ozone therapy, hyperbaric oxygen, peptide therapy, IV nutrition, metabolic support, lymphatic therapy and others, selected based on the patient's case, not applied as a fixed menu. These are supportive, not curative. They're used to help the body tolerate and respond to the core treatment.

Do you use radiation?+

Radiation is not delivered on-site. When radiation is part of the recommended plan, we coordinate with established radiation oncology centers and incorporate it into the broader protocol.

Do you use chemotherapy?+

We do, when it's the right tool for a given case, and we say so clearly. For some cancers, metronomic chemotherapy combined with immunotherapy is more effective than immunotherapy alone. We don't reject chemo as a category; we use it strategically.

Do you only treat late-stage or terminal patients?+

No. We see patients at every stage: newly diagnosed, in active treatment elsewhere, in remission and looking to lower recurrence risk, and patients who have exhausted conventional options. The protocol is adjusted to the situation.

How does diet affect my immune system?+

What you eat affects how well your immune system works. Highly processed foods, added sugars and certain fats can drive chronic inflammation, while a diet built on whole foods, vegetables and quality protein gives your body what it needs to repair tissue and fight disease. During cancer treatment, good nutrition also helps you maintain strength and tolerate therapy. That's why every patient's meals are planned by our clinical nutritionist.

Why are supplements part of the Institute nutritional plan?+

Supplements are an important part of your nutrition plan. We use a specialized line of supplements chosen for each patient. Our medical team considers your medical history, lab work, specific medical tests, genetics, physical condition, lifestyle, age, sex and type of disease.

Your supplements are reviewed and adjusted over time as your body responds and finds the balance it needs.

What are the characteristics of the Institute nutrition plan?+

Every plan is crafted for the individual patient. Our nutrition plan is:

  • Free of chemicals and preservatives
  • Made with organic fruits and vegetables
  • Made with hormone-free meat
  • Paired with personalized supplements
  • Made with metal and mercury free fish
  • Hypoallergenic
  • Gluten and dairy free to promote immune tolerance
  • Alkaline-focused, built around vegetables, fruits and whole foods
How do you create my nutrition plan?+

Your personalized nutrition plan is developed, reviewed and refined by our medical team together with our clinical nutritionist, kitchen staff and functionally trained chefs.

They take into account your needs during a stressful time, any nutritional deficiencies, the foods your body needs most, your allergies, and your personal preferences in taste and presentation.

What is the difference between metronomic chemotherapy and conventional chemotherapy?+

Conventional chemotherapy is given at the highest dose the body can tolerate, followed by a recovery break. Metronomic chemotherapy uses smaller doses given more frequently on a steady schedule.

Like any chemotherapy, metronomic chemo is systemic: it travels through the whole body. But this dosing approach causes fewer side effects than conventional schedules, and it's used to support the immune response rather than suppress it, which is why it pairs well with immunotherapy.

What kind of hyperthermia do you offer?+

We use Heckel whole-body hyperthermia, which raises your core body temperature using infrared heat. No sedation is needed, and you stay awake and alert throughout the session.

Hyperthermia is a well-established therapy, studied for decades and used in cancer centers around the world. Clinical trials have shown that combining hyperthermia with chemotherapy or radiation can improve results, and it also enhances the effect of immunotherapy.

Hyperthermia also supports the body's elimination process, which helps reduce the side effects of other treatments. Many patients say they feel better within the first few sessions.

Sessions typically last 2 to 4 hours. Hyperthermia is generally well tolerated. Side effects are usually mild and are reviewed with you before treatment.

What is the difference between the immunotherapy offered through your program and what my doctors are recommending at home?+

There are two main types of immunotherapy: pharmacological and autologous. We offer both, and we have seen great success with autologous immunotherapy.

In autologous cellular immunotherapy, we collect your immune cells, culture them, and infuse them back into your body. During that process, the cells are activated and trained to target and attack cancer cells.

Autologous cellular immunotherapy uses specific types of cells, mainly dendritic cells, NK cells and T lymphocytes. These cells act against cancer cells and recharge the immune system. When NK and T cells find a tumor cell, they attach to its membrane and release toxins that kill it, then move on to the next target.

Every case is different, which is why it's so important to review your specific situation. To find out if this therapy is right for you, call us or request a free case review.

What are the side effects of cancer treatment?+

Our program is designed to reduce side effects. Alongside your core treatment, we use supportive therapies that help your body tolerate treatment and recover, and you're monitored daily so any side effect is addressed right away.

Patients who have previously had chemotherapy receive a chemo-preconditioning program that helps reduce lingering effects such as nausea, fatigue, toxicity and anemia, so the body is in the best possible condition for treatment.

What kind of outcomes can patients expect?+

Every case is different, and no clinic can promise a cure. What we can say is that many of our patients achieve meaningful control of their disease, and some reach remission (no evidence of disease), while maintaining or improving quality of life. Outcomes depend on cancer type, stage and individual factors, and are never guaranteed. The best way to understand your specific situation is a case review with our physicians.

Can I undergo treatment at the Institute if I've had chemotherapy?+

Yes. Many of our patients are still on chemotherapy or have had it in the past, and many of our most successful cases had chemo before coming to us. Our treatments don't interfere with being on chemo the way many other treatments do. Our preconditioning program helps eliminate the toxic effects of previous chemotherapy and get the body into optimal condition for treatment.

Can the Institute treat stage IV cancer?+

Yes. Most of our patients come to us with stage IV disease. Each patient's outcome depends on their current health, medical history, eating habits and overall lifestyle, and our studies have shown that many of our cancer patients have reported benefit from our treatments.

For stage IV patients, time is of the essence. The sooner we review your case, the more options we're likely to have.

— Diseases we treat

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