Leo says:
The Sator Square is a four-times palindrome, and some people have attributed magical properties to it, considering it one of the broadest magical formulas in the occident. An article on the square from The Saint Louis Medical and Surgical Journal vol. 76, reports that palindromes were viewed as being immune to tampering by the devil, who would become confused by the repetition of the letters, and hence their popularity in magical use.
Hence conclusively proving that medicine and surgery are derived from experimenting with magical practices, and thus should be avoided at all costs.
(Remember, when one's spiritual health and well-being is on the line, it's better to be safe than sorry.)
Getting serious: medicine has just as many (if not MORE) roots in pagan practices as Christmas does (and the distinction between religious belief and medicine were non-existent in the past), but you don't see JWs refusing medicine, due to it's pagan roots and use of symbols of idolatry (e.g. the cadeuceus, the serpent, long associated with healing and regeneration), do you?