Danish researchers found that parents who already had a child with autism had a 7.5% risk of having another with the disorder. The risk was reduced to 2.4% for half-siblings with the same mother, and the risk was not significant for half siblings with the same father. The study, which examined 1.5 million Danish children born between 1980 and 2004, points to both genetic and pregnancy-related factors for autism causes, researchers said.

Full Story:
Disability Scoop

Related Summaries