Myths and Facts about Food Intolerance: A Narrative Review
Luisa Bertin, Daria Maniero, Michela Chiara, et al., Edoardo Vincenzo Savarino
Published in Nutrients
Abstract
This narrative review addresses common misconceptions surrounding food intolerance, including lactose and fructose intolerance, non-coeliac gluten/wheat sensitivity, FODMAP sensitivity, and the invalidity of unproven diagnostic tests such as IgG panels and bioresonance.
Methodology
Synthesis of clinical and mechanistic literature on food intolerance mechanisms, diagnostic approaches, and evidence quality of popular but unvalidated tests.
Key Findings
Legitimate food intolerances (e.g., lactose malabsorption, FODMAP-related symptoms) have identifiable pathophysiology and validated tests (hydrogen breath testing), whereas IgG panels, hair analysis, and similar tests lack scientific support.
Conclusions
Clinicians should rely on validated diagnostic pathways (elimination-rechallenge, breath testing, blinded food challenge) rather than unproven commercial panels when evaluating suspected food intolerance.
Limitations
As a narrative rather than systematic review, study selection is not exhaustive or formally graded for bias.
Related Health Concerns
Study Details
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