Older parents are likelier to have a child who develops anautism spectrum disorder (ASD) than are younger parents a new study has suggested. The study from researchers from the Drexel University School of Public Health in Philadelphia and Karolinska Institute in Sweden provides more insight into how the risk associated with parental age varies between mothers' and fathers' ages and found that the risk of having a child with both ASD and intellectual disability is larger for older parents. In the study researchers report that fathers' and mothers advancing ages have different impacts on their child's risk. The rise in ASD