Vitamin D to Prevent Autism in Newborn Siblings

The incidence of autism is increasing. Also, women of childbearing age are increasingly
found to be insufficient/deficient in vitamin D. Vitamin D is a neurohormone which is
important for development of the child, especially of the child's brain. The primary source
of vitamin D is from the sun through one's skin. People have been avoiding the sun because
of skin cancer, because of increasing TV watching, computer viewing and wearing clothes that
cover most of the body. This approach will study whether making the pregnant mother, whose
child is at risk for autism because of a previous child with autism, replete with vitamin D
will prevent that recurrence of autism in the newborn sibling.

Inclusion Criteria:

- Pregnant mothers who have had at least one child with autism spectrum disorder

Exclusion Criteria:

- Child with autism must not be from a syndrome such as Fragile X syndrome, Retts
Syndrome

- Mother must be before the third trimester