The tissues of the swine swarm with parasites. Of the swine God said, “It is unclean unto you: ye shall not eat of their flesh, nor touch their dead carcass.” Deuteronomy 14:8. This command was given because swine's flesh is unfit for food. Swine are scavengers, and this is the only use they were intended to serve. Never, under any circumstances, was their flesh to be eaten by human beings. It is impossible for the flesh of any living creature to be wholesome when filth is its natural element and when it feeds upon every detestable thing.412The Ministry of Healing, 313, 314 CCh 229.8
Pork, although one of the most common articles of diet, is one of the most injurious. God did not prohibit the Hebrews from eating swine's flesh merely to show His authority, but because it was not a proper article of food for man. It would fill the system with scrofula, and especially in that warm climate produced leprosy, and disease of various kinds. Its influence upon the system in that climate was far more injurious than in a colder climate.... Swine's flesh would not be palatable to the taste in its natural state. It is made agreeable to the appetite by high seasoning, which makes a very bad thing worse. Swine's flesh above all other flesh meats, produces a bad state of the blood. Those who eat freely of pork can but be diseased.413Counsels on Diet and Foods, 392, 393 CCh 230.1
Especially would the fine, sensitive nerves of the brain become enfeebled and so beclouded that sacred things would not be discerned, but be placed upon the low level with common things.414Testimonies for the Church 2:96 CCh 230.2
Those who have much outdoor exercise do not realize the bad effects of pork eating, as those do whose life is mostly indoors, and whose habits are sedentary, and whose labor is mental.415Counsels on Diet and Foods, 393 CCh 230.3