Robert Francis Kennedy Jr. (born January 17, 1954), also known by his initials RFK Jr., is an American politician, environmental lawyer, author, conspiracy theorist, and anti-vaccine activist serving as the 26th United States secretary of health and human services since 2025. A member of the Kennedy family, he is a son of senator and former U.S. attorney general Robert F. Kennedy and Ethel Skakel Kennedy, and a nephew of President John F. Kennedy. Kennedy began his career as an assistant distri...