An old saying says "anything can cause anything." That is particularly true of allergies.

Many people know that allergies can cause sneezing, watery eyes, coughing, hives, and even anaphylactic shock. But did you know that allergies can cause fatigue, irritability, brain fog, headaches, recurrent illnesses, bloating, and gastro-esophageal reflux disorder (GERD)?

We categorize allergies in several different ways. Looking at what happens in the body, allergies are classified as IgG, IgA, IgE, or IgM reactions. But that doesn't mean much to the person who is suffering from the symptoms of allergies. However, if your medical professional is thinking about allergies primarily in terms of IgE reactions, he or she will think primarily in terms of the skin-prick test. If your skin-prick test is negative, your provider may say that you are not allergic to the substance in question, for example, wheat. What he may not explain is that the skin-prick test deals with immediate allergies (IgE reactions), which represent only a small percentage, probably less than 10 percent, of all allergy-caused illness.

IgG Delayed Onset Food Allergy

Most people who have allergic reactions experience IgG reactions. Those are the delayed food allergies. Reports indicate that up to 60 percent of the population experiences these delayed food allergies.Type 3 immune reactions are much more commonly involved in food allergy than Type 1 reactions. When you ingest a food or substance to which you have a delayed allergy, your immune system (IgG antibodies) bind to the food as it enters the blood stream. You now have antigen/antibody complexes circulating in your system. They cause symptoms that can appear anywhere from a couple of hours to several days after you consume the food or substance.A delayed food allergy or food sensitivity also involves the immune system. Delayed food reactions may occur in any organ or tissue in the body and have been linked to either causing and/or provoking over 100 allergic symptoms and well over 150 different medical diseases. An estimated 60 to 80 million Americans suffer from clinically significant food allergies. Almost all of them suffer delayed symptoms.

Symptoms of IgG Food Allergy may include:

Abdominal Pains
Aches and Pains
Acne
ADHD
Anxiety
Arthritis
Asthma
Autism
Bloating
Celiac Disease
Chronic Fatigue
Chronic Infections
Constipation
Depression
Dizziness
Eczema
Enuresis (Bed Wetting)
Fibromyalgia
Fluid Retention
GI Problems

Hyperactivity
Irritable Bowel Syndrome
Itching
Lethargy
Loss of Appetite
Migraine
Nausea
PMS
Psoriasis
Recurrent Ear Infection
Recurrent Sinus Infections
Rhinitis
Sinusitis
Skin Rashes
Stomach Cramps
Tension
Urticaria
Weight Gain
Weight Loss
Wheezing


When the immune system is engaged in IgG production, numerous cytokines are also put into motion. The influence of these cytokines extends beyond the immune system to specific areas of the brain that regulate and affect behavior and mood. No wonder people can feel sick and tired when they are indeed being assaulted immunologically!

Since skin-prick testing does not identify IgG reactions, how can you find out if you have delayed food allergies? One way is by blood testing. Blood tests, such as the ELISA, look for antibodies to specific foods. Like all lab tests, they can produce false positives, and they can miss problematic foods that are sensitivities rather than true allergies. In addition, blood tests can be quite expensive, costing hundreds of dollars.

Dr. Brist primarily uses muscle response testing to identify foods and substances to which you may be either allergic or sensitive. If you suspect you may have delayed allergies to foods or other substances, you can schedule an allergy exam. Like blood tests and skin-prick tests, muscle response testing can never be 100 percent accurate. However, it often gives an excellent place to start. Dr. Brist can then continue to work with you to help you avoid offending foods and/or reprogram your body to be able to tolerate them again. Call 763-546-9151 for more information or to schedule an appointment.