"There's a very broad spectrum of autism from very severe handicaps to very mild handicaps… we have to break these down to the smallest extent possible," said Beaudet. With focused groups within the autism spectrum, studies may be more focused and effective.
Although studies on the diets are lacking, Estepp said she was "ecstatic" that doctors are making recommendations on how to approach treating stomach problems in children with autism.
"That makes all the difference in the world to someone who cannot speak," said Estepp. "I wished this had happened 10 years ago when my child was diagnosed."