CNN  —  The federal government may have partial answers on the purported causes of autism by this fall, but not the full picture, as Health and Human Services Secretary Robert F. Kennedy Jr. promised in April. Kennedy sat down with CNN’s Kaitlan Collins on Thursday shortly after a White House event to release the Make America Healthy Again Commission’s first report , which argued that ultaprocessed foods, environmental toxins and overmedication are driving a rise in childhood chronic illnesses.