Autism statistics from the CDC identify around 1 in 68 American children are on the autism-spectrum; a ten-fold increase in prevalence in 40 years. Careful research shows that this increase is only partly explained by improved diagnosis and awareness. Studies demonstrate that autism is five times more likely in boys than girls. An estimated one out of 42 boys and one in 189 girls are diagnosed with autism in the United States. Autism is more common than pediatric cancer, diabetes and AIDS combined.