Does providing written dietary advice improve the ingestion of non-allergic nuts in children with existing nut allergies? - A randomized controlled trial

M. Norman, C. South, P. Quinn, D. Chan, S. Palmer, M. Netting, M. Gold

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Background: Allergy to one or more nuts is common in children and often complete nut avoidance is advised. More recently, introduction of non-allergic nuts into the diet is advised by some allergists. Objective: This study aims to determine whether the provision of additional written dietary advice increases the ingestion of non-allergic nuts by children with nut allergy. Secondary aims include determining which factors facilitate or prevent successful inclusion of non-allergic nuts in the diet, and how inclusion influences quality of life, sensitization and the rate of nut reactions. Methods: This is a randomized, double-blinded, controlled trial of children with nut allergy who were asked to ingest one or more non-allergic nuts. Participants were 75 children aged 2-16 years (Intervention=36, Control=39), recruited in Adelaide, Australia. Randomized participants were supplied with the intervention (recipe booklet and monthly reminder text messages) or provided standard verbal dietary advice. After 6 months participants were assessed by a blinded investigator with regard to nut ingestion, quality of life, sensitization and nut reactions. Results: The intervention did not increase the ingestion of non-allergic nuts. A negative hospital challenge was a predictor of successful introduction. Parental report of child concern about a reaction was the greatest barrier. Ingestion of non-allergic nuts did not improve quality of life or change nut sensitization. Few nut reactions occurred during the study. Conclusions and Clinical Relevance: Ingestion of non-allergic nuts by children with nut allergy was not improved by additional dietary intervention. Selective introduction of non-allergic nuts is difficult to achieve when the child is anxious about introduction and challenges cannot be done in a medically supervised setting. Capsule Summary: This dietary intervention did not improve non-allergic nut ingestion by nut allergic children. Hospital challenge increased introduction rates, whilst parentally reported child concern about a reaction reduced success. Non-allergic nut ingestion did not change quality of life or sensitization.

Original languageEnglish
Pages (from-to)741-748
Number of pages8
JournalClinical and Experimental Allergy
Volume46
Issue number5
DOIs
Publication statusPublished - 1 May 2016

Keywords

  • Child
  • Diet
  • Food allergy
  • Non-allergic
  • Nut
  • Parental burden
  • Quality of life

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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