Chronic food sensitivities are known to be closely associated with symptoms such as acne, eczema, hives, chronic fatigue, asthma, hyperactivity, autism, joint pain, obesity, otitis media, irritable bowel syndrome, and general gastrointestinal discomfort. However, because these symptoms often develop slowly and lack specificity, they are not easily recognized. By testing IgG4 antibodies related to food sensitivity responses, we can assess imbalances in daily dietary habits. Through strategies such as food rotation and gut function support, it is possible to alleviate various allergy-related symptoms.

Allergic Reaction

Allergic reactions can be categorized into two main types: immediate reactions (commonly referred to as acute allergies) and delayed reactions (commonly known as chronic allergies). Allergens that trigger allergic responses may come from the environment, such as dust mites, mold, animal dander, and pollen. In addition, food is also one of the major sources of allergens.

Chronic Food Sensitivity Analysis
Food allergens can have a wide range of effects on the body, with symptoms varying from mild to severe discomfort. These may include:

Possible Symptoms Caused by Food Allergens
Acne	Eczema
ADD/ADHD	Autism
Fatigue	Fibromyalgia
Anxiety	Depression
Migraine	Arthritis
Bloating	Inflammatory Bowel Disease (IBD)
Irritable Bowel Syndrome (IBS)	Asthma

IgG4 Food Sensitivity IgG4

Immunoglobulin G (IgG) is an antibody found in human blood and is classified into four subclasses: IgG1, IgG2, IgG3, and IgG4. Each subclass responds to different antigens—IgG1, IgG2, and IgG3 are primarily associated with viral or bacterial infections, while IgG4 is related to food sensitivity reactions. In daily life, chronic sensitivity reactions caused by food are more common than IgE-mediated acute allergic responses. IgG4 reactions may occur hours or even days after eating, making them harder to detect. These hidden "allergies" are actually food-triggered sensitivity responses.

The important information provided by Chronic Food Sensitivity IgG4 Analysis-22 is as follows

• Chronic food sensitivities can cause immune reactions that may lead to intestinal inflammation, altering the permeability of intestinal epithelial cells, which can trigger headaches, fatigue, depression, anxiety, hyperactivity, mood changes, dermatitis, arthritis, weight gain, irritable bowel syndrome, recurrent infections, and other chronic diseases.
• The results of chronic food sensitivity IgG4 analysis can reflect an individual's dietary habits. The findings can be used to create personalized dietary plans and food rotation methods, helping to reduce immune reactions and discomfort caused by food.
• IgG is classified into four subclasses: IgG1 through IgG4. Among them, IgG4 is most directly related to food-triggered sensitivity reactions. Testing for IgG4 helps to eliminate false-positive reactions caused by other types of IgG.
• The results of chronic food sensitivity testing can provide insight into intestinal mucosal health and immune defense capacity, as the severity of allergies is directly linked to Leaky Gut (intestinal permeability).