Folate concentrations during pregnancy and autistic traits in the offspring. The Generation R Study

Area of Science:

• Neurodevelopmental disorders
• Maternal health
• Pediatric psychology

Background:

• Autism Spectrum Disorder (ASD) is a complex neurodevelopmental condition.
• Maternal nutrition during pregnancy is crucial for fetal development.
• Folate plays a vital role in neural development.

Purpose of the Study:

• To investigate the association between maternal folate status and prenatal folic acid supplement use with autistic traits in offspring.
• To explore the relationship between maternal folate concentrations and autistic traits at age six.
• To determine if folic acid supplementation influences the manifestation of autistic traits.

Main Methods:

• Population-based study design.
• Assessment of maternal plasma folate concentrations at 13 weeks gestation.
• Evaluation of parent-reported autistic traits using the Social Responsiveness Scale (SRS-2) short form at age six.
• Analysis of prenatal folic acid supplement use.

Main Results:

• Maternal plasma folate concentrations were not significantly associated with autistic traits in offspring.
• Prenatal folic acid supplement use showed a significant association with reduced autistic traits in children.
• A protective effect of folic acid supplementation on autistic traits was observed.

Conclusions:

• Prenatal folic acid supplementation may play a role in mitigating autistic traits.
• Maternal folate levels alone may not be as influential as active supplementation.
• Future research should examine the timing of folate intervention and clinical autism diagnoses.