Mumps, measles, and rubella vaccine and the incidence of autism recorded by general practitioners: a time trend analysis

I have understood that Dr. Wakefield's work represents MMR as one
factor in autism, with other factors being bowel disease, and
environmental toxins. My interpretation of this is that the MMR vaccine
triggers either an absorption disease within the bowels that is temporary,
or permanent, allowing an extreme level of environmental toxins to be
absorbed. The result is permanent damage to the brain, which would be very
sudden in appearance if the toxins were present in high amounts, and
absorbed in totality, or slower, if the toxins were low in the environment
or absorbed in lower potency.

The variables here are the amount of damage done to the bowel, and
the toxins in the environment itself.

The MMR vaccine simply opens the door to the problem, and the
increase in environmental toxins over time would account for the continued
increase in autism occurence.