Adam Clarke on Leviticus 11:7

And the swine - חזיר chazir, one of the most gluttonous, libidinous, and filthy quadrupeds in the universe; and, because of these qualities, sacred to the Venus of the Greeks and Romans, and the Friga of our Saxon ancestors; and perhaps on these accounts forbidden, as well as on account of its flesh being strong and difficult to digest, affording a very gross kind of aliment, apt to produce cutaneous, scorbutic, and scrofulous disorders, especially in hot climates.