A Wall Street Journal report indicates that Health Secretary Robert F. Kennedy Jr. plans to announce a potential connection between Tylenol use in pregnancy and autism. While federal officials label the announcement “speculation,” the manufacturer rejects any causal link, and Dr. Jon LaPook examines the latest research findings.

Kenvue, the manufacturer of Tylenol, has replaced its CEO amid an ongoing strategic review. The leadership change has prompted reactions from investors, with the company’s stock showing movement in response to the news.