[Food intolerances: more often suspected than confirmed]

Area of Science:

• Gastroenterology and Nutritional Science

Background:

• Widespread perception of food intolerances often leads to unnecessary dietary restrictions and anxiety, especially in irritable bowel syndrome patients.
• Many self-diagnosed intolerances lack scientific evidence and are frequently used to explain chronic symptoms.
• Accurate diagnosis and evidence-based dietary recommendations are vital for maintaining quality of life and preventing malnutrition.

Purpose of the Study:

• To provide an evidence-based perspective on the diagnosis and management of common food intolerances.
• To address the gap between perceived intolerances and scientific evidence.
• To guide healthcare professionals and patients towards accurate diagnosis and effective dietary strategies.

Main Methods:

• Comprehensive literature review of scientific evidence on common food intolerances.
• Analysis of diagnostic criteria and management strategies for histamine intolerance, additive sensitivity, FODMAP-related issues, and non-celiac wheat sensitivity.
• Synthesis of findings to present an evidence-based overview.

Main Results:

• Many commonly perceived food intolerances lack robust scientific validation.
• Histamine intolerance, additive sensitivity, FODMAPs (Fermentable Oligosaccharides, Disaccharides, Monosaccharides, and Polyols), and non-celiac wheat sensitivity are frequently implicated but require careful diagnosis.
• Evidence-based approaches are essential for differentiating true intolerances from other conditions and guiding appropriate dietary interventions.

Conclusions:

• Distinguishing between scientifically validated food intolerances and perceived sensitivities is crucial.
• Accurate diagnosis and evidence-based dietary management, rather than broad restrictions, improve patient outcomes and quality of life.
• Further research is needed to clarify the mechanisms and diagnostic criteria for various food sensitivities.