> If Tylenol causes autism, how did those parents in the 1920s get their hands on it? The claim is that Tylenol is a factor that increases the risk of autism.

> If Tylenol causes autism, how did those parents in the 1920s get their hands on it? The claim is that Tylenol is a factor that increases the risk of autism. It is not the cause of 100% of all cases. That said, the first synthesis of Paracetamol in the USA was Johns Hopkins in 1877, so maybe the answer is they went to Baltimore.