观看：特朗普声称“我们可能知道”自闭症的原因，嘲笑9月的宣布

Health and Human Services Secretary Robert F. Kennedy Jr. told President Donald Trump to expect “announcements” in September around his quest to find the cause of autism, the developmental disorder that affects the brain.

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It’s unclear what scientific studies will be used to support Kennedy’s findings.

READ MORE: Fact-checking RFK Jr.’s claim that environmental toxins cause autism

The health secretary had promised the president in April that he would undertake a “research effort” using “scientists from around the world” to determine the cause of the disorder, but the health department has not yet publicly launched such an effort.