3. The third prohibited food is pork, that is, the flesh of swine. Since the pig relishes filth and offal, its meat is repugnant to persons of decent taste; moreover, recent medical research has shown that eating swine-flesh is injurious to health in all climates, especially hot ones. Scientific research has also shown that pork carries a deadly parasite (trichina), among others, and no one can say what science may discover in the future which will shed more light on the wisdom of this prohibition. Allah the Almighty spoke the truth in describing His Messenger, Muhammad (peace be on him), as the one who "makes unlawful what is foul." (7:157)
In addition to this, there are also some scholars who say that eating pork frequently diminishes the human being's sense of shame in relation to what is indecent.