According to a study published in Archives of General Psychiatry "Overgrowth" in length, weight and head circumference may signal a problem in male babies. The boy babies with Autism grow faster than their non-autistic counterparts.
Prior research had found an association between accelerated head growth and autism. This study adds to that by showing that boys with autism have a tendency toward accelerated growth throughout the rest of the body.
Researchers are next planning on doing a similar study in girls.