The Jewish and Islamic religions abstain from eating pork due to their respective religious beliefs. Both of these faiths adhere to the dietary regulations outlined in the Hebrew Bible and the Quran, respectively.
The Bible also prohibits Christians from eating pork, but few adhere to this rule. The Seventh-Adventist Church among Christians does not consume pork. A person may eat any animal that chews cud and has cloven hooves, according to the Torah regulations of the Hebrew Bible. Pigs lack these characteristics, hence Jews do not consume pork. The Islam religion provides the same explanation.