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Blog Sun August 14, 2011 Younger Siblings Of Autistic Kids:
Their Risk Greater Than Thought Autism specialists have long
thought the disease has a strong genetic component -– maybe
stronger than any other neurodevelopmental disorder. Now a new
study — the largest so far to look at autism in younger brothers
and sisters of an affected child — finds their risk is higher
than previously thought, especially if the younger sibling is a
boy. The overall risk that a younger sibling of an autistic
child will develop the disorder is 19 percent, the researchers
found. Earlier, smaller studies h