California, as the most populous state, had the highest number of adults estimated to be on the autism spectrum, with 701,669 ...

HHS Secretary Robert F. Kennedy Jr. said the agency is planning to study what causes autism and release results in September.

Robert F. Kennedy Jr., the Health and Human Services Secretary, has spoken several times in April about plans to find the origins of autism.

Health Secretary Robert F. Kennedy Jr. warned that U.S. autism diagnoses are rising at an “alarming rate," calling the ...