Can Food Sensitivities Be Behind Your Digestive Issues?

If you've been dealing with bloating, irregular digestion, or discomfort after eating and can't figure out why, a food sensitivity could be part of the picture, even if you've already cut out the "usual suspects."

Sensitivity vs. Allergy: What's the Difference?

A true food allergy triggers an immediate immune response and can be identified with standard allergy testing. A food sensitivity or intolerance is different. Symptoms are often delayed by hours or even a day, which makes them much harder to trace back to a specific food without more targeted testing.

Common Signs Worth Paying Attention To

Bloating or gas that shows up hours after eating, not immediately. Fatigue or brain fog following meals. Skin flare-ups with no clear trigger. Digestive symptoms that haven't improved despite dietary changes.

A quick word on IgG testing

Patients ask me about this a lot, so it's worth a quick, honest note: those mail-in IgG antibody panels marketed as "food sensitivity tests" have a mixed reputation, and there's a real reason why. Having IgG antibodies to a food is a normal, expected part of how the immune system responds to something you eat regularly. It's more a sign of exposure than proof that the food is behind your symptoms. That's part of why the major allergy societies don't recommend relying on IgG results alone to diagnose a sensitivity, and why plenty of people with no digestive complaints still test "positive" for a long list of foods.

That doesn't mean testing has no place. It means the most useful path usually pairs a structured elimination and reintroduction with a comprehensive stool/GI panel and, when SIBO is suspected, breath testing, rather than leaning on an antibody panel by itself.

Why Guessing Rarely Works

Elimination diets can help, but without knowing what to look for, it's easy to remove the wrong foods or miss a trigger entirely. A lot of the foods that cause this delayed, hard-to-pin-down reaction fall into categories (certain fermentable carbohydrates, for example) that people don't think to look at, since they carry a "healthy" label. Functional lab testing can narrow down what's actually driving your symptoms, so your next steps are based on your own results instead of a guess.

Ready to get answers instead of more guesswork? Schedule an appointment online or email asawellnesscenter@gmail.com.