RFK Jr. has promised to find the "cause" of the "autism epidemic" by September. Many people in the autism community are offended by his rhetoric.

Kennedy Jr. insists an environmental toxin is responsible for increased autism prevalence in the U.S. "This is a preventable disease," he said April 16, dismissing an HHS agency report’s explanation for the increase.

The autism study is planning to link confidential data "with broad coverage in the U.S. population" in one place for the first time.