Muscle Weakness Found in Some Autistic Children

SUNDAY, April 13 (HealthDay News) -- New research suggests that muscle weakness in a child with autism may point to an underlying genetic defect that's causing mitochondrial disease, which means the muscles don't get the energy they need.

Conversely, it's possible that the mitochondrial disease may also play a role in the development of autism, perhaps by preventing the brain from getting the energy it needs to perform properly, the researchers noted.

"In large studies of kids with autism, about 20 percent have markers of mitochondrial disease in the blood," explained Dr. John Shoffner, an associate professor of biology at Georgia State University and president of Medical Neurogenetics.

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