Abnormal growth rate in womb linked to autism

Conclusion This large study suggests a possible link between foetal growth and very low or very high birth weight and ASD, with or without intellectual disability. However, it only observes an association and does not prove cause and effect. Parents expecting a baby who is showing below- or above-average foetal growth, or who have a baby born with below- or above-average birth weight, should not be overly concerned that their child may be at risk of developing ASD. If there is a direct link between foetal growth and ASD, the reasons why this may be the case are not clear. The authors' suggestions of possible reasons, such as the function of the placenta, are only theories. Importantly, although the authors have tried to adjust for possible confounders, there could be other factors at play that may have affected the results. These include genetic, environmental or health-related conditions that the child or mother were exposed to during the pregnancy or after the birth. Examples of possible factors not taken into consideration include alcohol and substance misuse, and obesity or weight gain around the time of the birth. The study also only relates to a Swedish population sample. There may be environmental and population health differences between Sweden and elsewhere, meaning that care should be taken when generalising results to other countries. Overall, the possible causes of autism spectrum disorder remain unknown, and further research is needed.   Analysis by Bazia...
Source: NHS News Feed - Category: Consumer Health News Tags: Neurology Mental health Pregnancy/child Source Type: news