The risk of younger siblings developing an autism spectrum disorder is 14 times higher if an older sibling has the disorder says a study. Autism is a neurodevelopmental disorder defined by impairments in social interaction and communication as well as restricted and repetitive patterns of behaviour. The findings showed that children with older siblings who had autism had the disease rate of 11.3 per cent compared to 0.92 per cent for those with unaffected older siblings. Know if alternative therapies can heal autism. The risk level was found consistent across gestational age at birth. Younger siblings who were born at