Dr. Weyrich's Naturopathic Functional Medicine Notebook is a collection of information on topics of interest to Dr. Weyrich that may be of interest to the world wide audience. Due to limitations of time, not all information that Dr. Weyrich knows or would like to further research is published here. Dr. Weyrich welcomes financial contributions to support specific research topics, as well as copies of non-free access journal articles for him to review on a topic. Constructive criticism is also welcome.


Overview of Food Allergies and Intolerances

Food allergies may be either immediate reaction (IgE) or delayed reaction (IgG).

Food intolerances are distinguished from true allergies, and may be due to inability to digest or absorb certain foods, such as lactose.


Etiology of Food Allergies and Intolerances

Dysbiosis leading to leaky gut syndrome is commonly associated with food allergies.

Some authors have noted that allergies are more common in hypothyroid conditions, and respond well to treatment of the underlying hypothyroid condition [Starr2005, pg 108].


Differential Diagnosis of Food Allergies and Intolerances

  • Basal body temperature below 97.8 degrees F, elevated TSH, or depressed T3 (suggests hypothyroidism).
  • Adrenal insufficiency.

Treatment of Food Allergies and Intolerances

  • IgG blood food allergy testing followed by avoidance of problematic foods.
  • Elimination diets are a low-cost alternative to IgG blood testing, but take longer and are a hassle for the patient to implement.
  • Treat underlying leaky-gut syndrome.

References for Food Allergies and Intolerances