Understanding Food Intolerances vs Food Allergies
It’s important to get clear between food allergies and food intolerances because they affect the body differently and require different management strategies.
Food Allergies
A true allergy occurs when the immune system overreacts to a substance (an antigen) in food. The body produces IgE antibodies, which can trigger an acute response such as:
Hives
Swelling
Breathing difficulties
Even anaphylaxis in severe cases
Food allergies usually happen immediately after eating the allergen and can be life-threatening, so they require urgent attention.
Food Intolerances
Food intolerances, on the other hand, do not involve the immune system in the same way. They are usually caused by the body’s inability to properly digest or metabolize certain foods. Symptoms can include:
Bloating
Gas
Diarrhea or constipation
Nausea
Fatigue
These reactions are generally slower to appear and are rarely life threatening, but they can significantly impact daily wellbeing.
Common Causes of Food Intolerances
Lactose intolerance - difficulty digesting dairy sugars
Gluten sensitivity - not a celiac disease allergy, but can trigger gut inflammation
Fructose or FODMAP malabsorption - leading to bloating and digestive discomfort
Additives or preservatives - such as sulphites or MSG
How to Investigate Your Gut
One of the most useful tools is GI Mapping, which goes beyond typical food intolerance tests:
TEST YOUR GUT (GI MAPPING)
This test looks at your microbiome and mucosal health, which are key for healing and restoring gut balance. It helps identify imbalances that may contribute to symptoms, and allows targeted interventions that might reduce issues over time.
Your practitioner may also discuss additional tests, such as:
· RAST
· IgG, IgE & IgA antibody testing
· Breath testing for lactose, sucrose, or fructose intolerances
Knowing your gut health gives a clearer picture and helps guide personalised dietary and lifestyle strategies rather than guessing which foods to avoid.
How to Manage Food Intolerances
Keep a food diary - track what you eat and note symptoms
Support gut health - probiotics, prebiotics, and balanced fibre can help
Seek professional guidance - A naturopathic will direct you best way forward and create a tailored plan