Yale Child Study Center, Yale University, New Haven, Connecticut 06520, USA.
Pediatrics. 2012 Jun;129(6):1141-9. doi: 10.1542/peds.2011-2127. Epub 2012 May 28.
Infant formula is supplemented with long-chain polyunsaturated fatty acids (LCPUFAs) because they are hypothesized to improve cognition. Several randomized controlled clinical trials have examined the effect of LCPUFA supplementation of infant formula on cognitive development. We conducted this meta-analysis to examine the efficacy of LCPUFA supplementation of infant formula on early cognitive development.
Two authors searched PubMed, PsychInfo, and Scopus for randomized controlled clinical trials assessing the efficacy of LCPUFA supplementation of infant formulas on cognition. Our analysis was restricted to randomized controlled clinical trials that examined the effect of LCPUFA supplementation on infant cognition using Bayley Scales of Infant Development. Our primary outcome was the weighted mean difference in Bayley Scales of Infant Development score between infants fed formula supplemented with LCPUFA compared with unsupplemented formula. We conducted secondary subgroup analyses and meta-regression to examine the effects of study sample, LCPUFA dose, and trial methodologic quality on measured efficacy of supplementation.
Twelve trials involving 1802 infants met our inclusion criteria. Our meta-analysis demonstrated no significant effect of LCPUFA supplementation of formula on infant cognition. There was no significant heterogeneity or publication bias between trials. Secondary analysis failed to show any significant effect of LCPUFA dosing or prematurity status on supplementation efficacy.
LCPUFA supplementation of infant formulas failed to show any significant effect on improving early infant cognition. Further research is needed to determine if LCPUFA supplementation of infant formula has benefits for later cognitive development or other measures of neurodevelopment.
婴儿配方奶粉中添加长链多不饱和脂肪酸(LCPUFAs),因为它们被认为可以改善认知能力。已经有几项随机对照临床试验研究了婴儿配方奶粉中 LCPUFA 补充对认知发展的影响。我们进行了这项荟萃分析,以检验婴儿配方奶粉中 LCPUFA 补充对早期认知发展的功效。
两位作者在 PubMed、PsychInfo 和 Scopus 上搜索了评估婴儿配方奶粉中 LCPUFA 补充对认知功效的随机对照临床试验。我们的分析仅限于使用贝利婴幼儿发展量表评估 LCPUFA 补充对婴儿认知影响的随机对照临床试验。我们的主要结局是接受 LCPUFA 补充的婴儿配方奶粉与未补充的配方奶粉相比,在贝利婴幼儿发展量表评分上的加权均数差值。我们进行了二次亚组分析和荟萃回归,以检验研究样本、LCPUFA 剂量和试验方法学质量对补充功效的影响。
有 12 项涉及 1802 名婴儿的试验符合我们的纳入标准。我们的荟萃分析表明,配方奶粉中 LCPUFA 的补充对婴儿认知没有显著影响。试验之间没有显著的异质性或发表偏倚。二次分析未能显示 LCPUFA 剂量或早产儿状态对补充功效有任何显著影响。
婴儿配方奶粉中 LCPUFA 的补充未能显示出对改善早期婴儿认知有任何显著效果。需要进一步研究以确定婴儿配方奶粉中 LCPUFA 的补充是否对后期认知发展或其他神经发育指标有益。