FAO and WHO recommend new gluten reference dose to support food safety
The Food and Agriculture Organization (FAO) and the World Health Organization (WHO) have recently convened an expert consultation which provided a recommendation for a new Reference Dose (RfD) of 4 mg of gluten for cereals containing gluten. This recommendation follows a series of expert consultations by the United Nations Codex Alimentarius Commission aimed at assessing risks associated with food allergens.Since 2020, these consultations have generated vital guidelines regarding Reference Doses for various allergenic foods and the application of Precautionary Allergen Labelling (PAL).
Coeliac disease is an autoimmune disorder triggered by gluten in genetically predisposed individuals. Coeliac disease can lead to severe health complications, necessitating a strict, lifelong gluten-free diet.
The Codex Alimentarius Commission previously established a threshold, setting gluten limits in gluten-free foods to no more than 20 mg/kg. While this guideline has improved food safety for those with coeliac disease, ongoing research is needed to better understand the effects of gluten exposure and its long-term health impacts.
The new RfD recommendation is crucial for the effective application of precautionary allergen labeling. Unlike IgE-mediated allergies, coeliac disease requires consideration of long-term gluten exposure risks. The expert committee focused on cumulative exposure rather than acute reactions, aiming to limit daily gluten intake to a maximum of 10 mg. Their modeling assessed various scenarios, including different gluten concentrations and consumption patterns from multiple countries.
Findings indicated that RfDs between 5 and 10 mg would not lead to median daily intakes surpassing the critical threshold of 10 mg per day, thereby mitigating chronic health risks. Consequently, the committee has recommended a conservative RfD of 4 mg of gluten when assessing unintended gluten presence in food products. This replaces the previous guideline of 5 mg of total wheat protein.
The risk of gluten contamination in foods often arises from cross-contact during manufacturing and supply chain processes. To address this, food operators should implement stringent controls similar to those used for allergenic foods. Employing a risk-based approach to precautionary allergen labeling based on the newly proposed RfD is expected to widen the availability of safe products while ensuring consumer safety.
Clear and informative labeling practices have also been recommended, including more precise ingredient naming for gluten-containing cereals, such as labeling "barley (gluten)," and utilizing straightforward PAL statements like "may contain: wheat (gluten)." This clarity is vital to prevent consumer confusion, particularly among those with wheat allergies.
In summary, the endorsement of a 4 mg RfD within an updated framework for precautionary allergen labeling aims to improve food safety, enhance label transparency, and ultimately boost consumer confidence for those with coeliac disease and wheat allergies. This initiative promises to improve the quality of life for affected individuals by expanding their safe food options.
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