For a long time people thought more kids were being identified with autism because of better screening. It is now clear that the rate of autism really is rising. The latest CDC
numbers released this week show 1 in 68 kids age 8 in the US have autism. For boys the statistic is 1 in 42. Most of us know a child or adult who is on the autism spectrum. What we don't know is what causes autism. However, one clinical trial
is testing cord blood stem cells as a therapy for autism.