Who was one of the first physicians in the early 1500s to criticize the idea that mental illness was due to demon possession?

One of the first physicians in the early 1500s to criticize the notion that mental illness was due to demon possession was Paracelsus. He argued that mental disorders had natural causes rather than supernatural ones, emphasizing the importance of understanding the human body and its functions. Paracelsus's perspective laid the groundwork for a more scientific approach to mental health, moving away from the prevailing beliefs of his time.