イオン飲料水などの多飲によるビタミンB₁ 欠乏症（特集：臨床におけるビタミン・バイオファクターの有用性）

抄録

The Committee on Pediatric Nutrition of the Child Health Consortium of Japan investigated vitamin B₁ deficiency caused by excessive consumption of ionic beverages. In the national survey, we obtained clinical data from 33 children. Twenty-one children had a problem with the nurturing home environment. The median duration of excessive ionic beverage intake was 3.5 months and the daily intake was 1,000 mL or more in 25 children. Infectious diseases were the most common reason for excessive ionic beverage consumption. The symptoms of vitamin B₁ deficiency were nonspecific, and about half of the cases had neurological sequelae. The questionnaire survey of parents on their awareness of ionic beverages and their actual usage of ionic beverages for their young children showed to be generally good. Having a positive opinion about the benefits of ionic beverages was associated with the risk of their excessive consumption. The questionnaire survey of pediatric practitioners showed that pediatricians’ attitudes toward children’s consumption of ionic beverages were generally appropriate. Pediatric specialists showed more appropriate attitudes toward children’s consumption of ionic beverages than non-pediatric specialists. It will be important to notify the potential harm of excessive ionic beverage consumption to prevent the occurrence of new cases.