LONDON — Another group of researchers has discredited a link between the complex child brain disorder autism and the everyday reliever Tylenol.  Such a possible connection has been put forth by President Trump on the advice of his national health secretary —the publicity hound Robert Kennedy Jr. Neither Trump nor Kennedy has any credentials in medicine. Even so, the pair called a news conference in October with the message: “If pregnant, don’t take Tylenol.” The  researchers reported in the peer-reviewed medical journal BMJ, published by the British Medical Association, that an exhaustive review of existing scientific studies has found no such link. The researchers said they reviewed 40 studies. Specifically about autism and Tylenol, they said evidence was weak and failed to account for family-related and environmental factors as progenitors of autism. Kennedy also has claimed a link between circumcision and autism.

Earlier: Mayo holds back on Trump’s anti-Tylenol claim