Dr. Alex Jimenez, El Paso's Chiropractor
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Intestinal Permeability and Functional Integrated Medicine Part: 1 El Paso, Texas

The usage of integrated functional medicine is essential when it comes to our bodies overall health. Local practitioners and health coaches, talk with patients on what seems to bother them. Sometimes it is a simple adjustment, but mostly it’s what’s causing them problems on the inside. Some patients have inflammation around their intestinal epithelial barriers, and it can cause a leaky gut.

In the previous article, we talked about what the microbiomes do in our intestines and what is their functions are in the intestinal epithelial barrier. However, today we will discuss what the immunoglobulins antibodies do with proteins and peptides in the intestinal permeability. As well as explaining what the Lectin Zoomer and the Dairy Zoomer does when a patient has a food sensitivity and needs testing in a two-part series about the intestinal permeability and food zoomers.



The first thing that we need to know is that immunoglobulins are immune-mediated reactions. So anything that involves the immune system will cause a hypersensitivity reaction to one or more food or foreign proteins, and their presence can be of one or more types of immunoglobulins.

There are 3 terms of hypersensitivities that can be involved with immunoglobulins:

  1. Allergies are the ones that are most common and are associated with anaphylaxis. Patients can have a very severe and acute immediate reaction to specific allergens like food or environmental like pollen or a bee sting.
  2. Non-allergies, sensitivity reactions involved either chemical mediators or antibody reactions.
  3. Food intolerances are non-immune-mediated reactions, and a good example is Lactose Intolerance or a bile salt deficiency. These can make somebody who has a food intolerance, can’t digest fat.

These three terms are often mistaken and used interchangeably clinically, but they are entirely different since they are not interchangeable. Especially when it comes to sensitivities and intolerances because those two commonly get used in place of each other, but they are totally different.

If you are testing your patient’s immunoglobulins, remember that antibodies are particular to each type of foreign substances and can be in three types of hypersensitivity. Antibodies will only bind an react to the specific proteins of the foreign material but not to the substance’s extract. The most common ones are type 3, where it involves IgG, IgA, and IgM. This type can tell us what cells and mechanisms are involved.

Type 3 Hypersensitivity Mechanisms

Here are the types of mechanisms that are involved with Type 3 immunoglobulins.

  • Antigens are a foreign protein that is present and is recognized as a threat or non-self.
  • Antibodies will bind to the antigen to neutralize or keep it from linking to anywhere else in the body. This is where the immune complex is formed.
  • Immune complexes insert themselves into the small blood vessel, joints, tissues, and glomeruli, causing symptoms to the body.
  • They are far more capable of interacting with complement proteins to form medium-sized complexes; which has an excess amount of antigens that are high pathogenic.
  • However, once the immune complex is in the tissue, it can induce an inflammatory response and cause damage to the body. This damage is the result of the action of cleaved complement anaphylatoxins, which can mediate a mast cell degranulation.
  • With the recruitment of inflammatory cells in the tissue, it can lead to tissue damage through phagocytosis.

IgA and IgG

In a previous article, we mentioned the mechanics of the intestinal permeability. However, we going to discuss what IgA antibodies and IgG antibodies do to the gut and to the entire body.

IgA Antibodies

IgA antibodies are found in the body where there is a mucosal lining around the areas like the nose, breathing passages, digestive tract, ears, eyes, and vaginal region. These surfaces are exposed to the outside of the environment either by air, food, or other foreign substances regularly.

IgA antibodies actually protect the body surfaces that are exposed to outside foreign substances, and these antibodies can be found in saliva, tears, and blood.


In the gut, however, it can bind to the mucosal layer on the top of the intestinal epithelial cells to form a barrier to neutralizing threats before they reach the cell. And that is very important, especially since IgA is like an insurance policy for your gut.

IgA antibodies are considered as non-inflammatory. Which means that they don’t stimulate inflammatory processes in the body like IgG does. They do, however, create a mucosal response to a foreign antigen, and it is usually microbial (ex., bacteria, yeast, viruses, parasites) or microbial toxins. They can also generate a response to pollutants, toxins, and recognized undigested food as a foreign protein.

In the intestinal lumen, IgA can be indicative of an immune response stimulated by T-b cell interaction. So a healing intervention, if a patient has an abundance of IgA antibodies may need to target TH1 and TH2 balance so it can regulate T-reg production.

IgG Antibodies


IgG antibodies are found in all body fluids. They happen to be the smallest but the most common of all antibodies as they make-ups about 75% to 80% of antibodies found throughout the entire body. These antibodies are essential as they fight against bacterial and viral infections, and they are the only type that can cross the placenta.

They do indicate exposure to a specific antigen, but they don’t always necessarily indicate active inflammation; however, they can contribute to it in a dose-independent.

Why measure IgA and IgG?

So why do we measure IgA and IgG? Surprisingly some people don’t produce as much or any IgA antibodies, and therefore, local practitioners would not know if their patients have formed a reactivity to an antigen if they don’t check their IgG levels.

Surprisingly, some IgG antibodies are not an indicator of actual inflammation or disease process. Some IgG antibodies are formed in response to a protein as sort of a tracker in the body but do not elicit a reaction. However, IgA antibody is coupled with IgG to indicate a bit stronger immune response to an antigen in some cases.

IgA and IgG in the Protein Level

IgA and IgG testing in the protein level is what the food sensitivity tests are looking at. They look for the whole protein, which is the extract level. All food sensitivity test looks for residues of carbohydrate and lipid-based particles. It’s not pure protein but that what the test does, it seems for the reactive compound. Some of the strengths are that the test gives an acute measure of IgG and IgA to a specific protein. It can also be suitable for associating Type 3 reactions involving IgG and IgA complexes, and if the IgG is pathogenic, then it will be beneficial.


Some of the weaknesses are that IgG can be a protective antibody, and it may be a good thing. It means that the immune system is handling it and there’s nothing necessarily wrong about that. IgG and IgA antibodies represent whole proteins being presented to the immune system can it also be an indicator that a patient may have a lack of sufficient digestive capacity when many food sensitivities are being detected.

IgG and IgA in the Peptide Level

When IgG and IgA are being tested at the peptide level, this is where the food zoomer test focuses on. This is because there is a high level of antibodies specificity, cross-reactivity is minimized if not completely eliminated. The concept of foods that are cross-react, for example, gluten, might cross-react to other foods that are similarly shaped in their molecular structure, then you should eliminate the gluten out of your diet as well as the foods that are in contact with them.


However, if the antibodies to gluten are being picked up at the peptide level, then it won’t look at those foods that are being cross-reactive to gluten. The antibodies will only bind to the individual peptides than the whole protein. This will be a more accurate assessment of whether or not that the patient is sensitive to the foods their body is reacting to.

What is Loss of Oral Tolerance?

Loss of oral tolerance is a term used to describe the phenomenon of someone developing a sensitivity, whether it is accompanied by symptoms or not, and it’s usually a commonly consumed or semi-regularly consumed food. When that happens, there is a production of inflammatory cytokines and antibodies that will respond to the continued exposure to the food.


For the inflammatory responses to be eliminated, patients have to remove the offending food for about 3 to 4 weeks if IgA antibodies are present or 3 to 6 months if the IgG antibodies are present as well. This is the only way for the antibodies to disappear, and the intestinal permeability can heal. But the disappearance of antibodies does not guarantee that oral tolerance has been established. If you are retesting a patient and if the antibodies are gone, that indicates that the patient has done an excellent job in eliminating that food from their diet. However, the only way to know is to reintroduce the food and retest after a few months, just to make sure that no antibodies are being produced after the intestinal barrier has been fully healed.


All in all, that is what the intestinal permeability does when we have IgA and IgG antibodies and what do they do when there is food sensitivity in the body.  However, it is crucial that our patients understand that we here at Injury Medical Clinic, take the time to study what causes inflammation in our patients and using integrated functional medicine to make sure that their intestines are being healed naturally. In the next article, we will discuss the difference between peptides and proteins, and about the Lectin and Dairy Zoomer.



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Our Purpose & Passions: I am a Doctor of Chiropractic specializing in progressive, cutting-edge therapies and functional rehabilitation procedures focused on clinical physiology, total health, practical strength training, and complete conditioning. We focus on restoring normal body functions after neck, back, spinal and soft tissue injuries.

We use Specialized Chiropractic Protocols, Wellness Programs, Functional & Integrative Nutrition, Agility & Mobility Fitness Training, and Rehabilitation Systems for all ages.

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The information herein is not intended to replace a one-on-one relationship with a qualified health care professional, licensed physician, and is not medical advice. We encourage you to make your own health care decisions based on your research and partnership with a qualified health care professional. Our information scope is limited to chiropractic, musculoskeletal, physical medicines, wellness, sensitive health issues, functional medicine articles, topics, and discussions. We provide and present clinical collaboration with specialists from a wide array of disciplines. Each specialist is governed by their professional scope of practice and their jurisdiction of licensure. We use functional health & wellness protocols to treat and support care for the musculoskeletal system’s injuries or disorders. Our videos, posts, topics, subjects, and insights cover clinical matters, issues, and topics that relate to and support, directly or indirectly, our clinical scope of practice.* Our office has made a reasonable attempt to provide supportive citations and has identified the relevant research study or studies supporting our posts. We provide copies of supporting research studies available to regulatory boards and the public upon request. We understand that we cover matters that require an additional explanation of how it may assist in a particular care plan or treatment protocol; therefore, to further discuss the subject matter above, please feel free to ask Dr. Alex Jimenez or contact us at 915-850-0900 Read More…

Dr. Alex Jimenez DC, MSACP, CCST, IFMCP*, CIFM*, CTG* 

email: coach@elpasofunctionalmedicine.com
phone: 915-850-0900
Licensed in Texas & New Mexico