期刊
FRONTIERS IN PEDIATRICS
卷 8, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fped.2020.615406
关键词
folic acid intake; folate status; infant and child; allergic diseases; meta-analysis
类别
资金
- National Natural Science Foundation of China [81202193, 81573130]
- Beijing Municipal Natural Science Foundation [S160004, 7172117, 7122103]
Folic acid intake during pregnancy may be a risk factor for allergic diseases in infants and young children, especially impacting respiratory allergies.
Objective: This study aimed to analyze the effect of folic acid supplements on infant and child allergic diseases through systematic review and meta-analysis. Design: PubMed, The Cochrane Library and references of related articles published before January 1, 2020 were searched. Setting: Meta-analysis was used to explore the influence of folic acid on skin allergies (eczema, and atopic dermatitis) and respiratory allergies (asthma, wheezing, and allergic rhinitis). Participants: Data were collected from 15 studies with 244,018 individual participants from five different countries for meta-analysis. Results: Folic acid was confirmed as a risk factor for allergic diseases in infant and child. The risk of allergic diseases dramatically increased when maternal folic acid intake <400 mu g/day (RR = 1.050; 95% CI = 1.027-1.073) during pregnancy. Stratified analyses revealed that the association was significant only for respiratory allergy (RR = 1.067; 95% CI = 1.028-1.108) and pregnant women who only used folic acid supplements (RR = 1.070; 95% CI = 1.030-1.112) and that countries without folic acid fortification (RR = 1.046; 95% CI = 1.026-1.067). Conclusions: This study suggested that folic acid intake can be a risk factor for allergic diseases, especially respiratory tract allergies among infants and young children. Furthermore, pregnant women should pay attention to supplementation of folic acid from both folic acid supplements and fortified foods with folic acid during pregnancy.
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