While Autism Awareness Day, teaches the public about the developmental disorder, Jenny McCarthy has been vocalizing her thoughts publicly and on paper since her son, Evan, 6, was diagnosed at the age of two. in her latest release, Healing and Preventing Autism: A Complete Guide, the advocate talks about the causes of the developmental disorder and how she has helped her child heal. She coauthored the text with Evan's pediatrician, Dr. Jerry Kartzinel, who also has a son with autism.