I have worked with quite a few individuals with autism ranging in age from 8 to 73 in both males and females. it’s easy to show what causes it when you understand the attributes of male consciousness vs female consciousness.
Autism is a super masculine consciousness, which is the reason more males get it than females. While there are several causes that I have identified, the primary cause is an external influence during the third month of pregnancy when neural tube development is taking place.
Is is strongly correlated to early childhood attachment/abandonment as described by Bowlby and Ainsworth in styles of attachment.
This doesn’t explain why 98% of autistic children have the 677 and 1298 MTHFR anomaly (genetic predisposition + heavy metal accumulation). The children who carry both abnormalities are unable to clear toxins like other kids can.
I have the advantage over most researchers in that I feel consciousness as a physical object while it is intangible to most researchers.
The thalamus in the brain shuts down in order to protect an individual from negative emotional input. Often a person with autism will turn their head to the left when they are looking at you in order to restrict optic nerve input to the left hemisphere of the brain. If they are looking straight on the emotional stimulation causes the input to be overwhelmed and it shuts down.