A Study of Dietary and BMI Changes Over Time in Mothers of Children with Food Allergies.

Few follow-up surveys have been conducted with regard to the changes in diet of mothers of children with food allergy. We examined changes in food and BMI over time in the mothers of children with food allergies. A total of 146 mothers completed a diet survey twice, with the first conducted in 2013-2016 and the second in 2018, and the dietary changes were examined. Furthermore, among the 120 mothers who eliminated eggs from their diet in the first survey, 98 continued to eliminate eggs and 22 reintroduced eggs during the second survey, and the change over time was examined. Additionally, factors related to BMI were analyzed. We observed a change in the amount of egg intake over time within each group. As the number of children who consumed eggs as the causative food declined, the amount of eggs consumed by the concerned mothers significantly increased (median: 7.8 g/1,000 kcal→12.7 g/1,000 kcal) (p<0.01), even in children who continued to not consume eggs. We found a negative correlation between BMI in mothers of children with FA and vegetable protein. The mothers indicated that their awareness on food allergy improved, which we believe led to increased consumption of foods that had been restricted thus far. BMI was believed to be related to synchronization with the elimination-substitution diet.