the dietary guidelines are not meant for you. and the reasons were pretty solid, for the time in which they were written. pork if undercooked COULD lead to sickness and shrimp and crab and other filter feeding animals COULD if where they ate where the water source was contaminated make you sick. so? those ancient "jews" made a rule to just stay away from them. for the betterment of all i guess. perhaps the problem is over time the rules didnt change. cook your pork properly and you have no problems. etc. whatever it is its not a plot to keep you from eating what you want.
o7