I do not eat shellfish, I do not eat pig meat and my wife was a virgin when I married her. To the best of my ability I follow the law because the law was intended for my benefit to keep me healthy. Although the doctors are actually stricter then Moses on what they ban us from eating. You do not have to follow the advise of your doctor if you want to roll the dice and take a chance on ending up a loser.
I know a group of people that live a high risk lifestyle and they are dropping like flies. They die off at a rate of about one a month. So you can do a risk assessment and decide how long you want to live. IF you want to live a long life then you are going to have to take good care of yourself. If you want to be healthy then you are going to have to eat right and take good care of yourself. Just remember that Paul tells us that a lot of people are sick and a lot of people have died an early death.
Well you are free to follow the dietary restrictions of the Mosaic Law if you choose. Just know you are not required to and there is no spiritual benefit or spiritual loss for following or not following- that is a matter of conscience.
Jesus made that sacrifice for us. Jesus said: "It is finished" (τετέλεσται) even before I was born. So the finished work is still doing a work in my life today. Only through the blood of Jesus are we saved. So we need to know how the Law of Moses applies to our life today. We do live in the age of God's Grace.
The Mosaic Law was for Israel while they were a theocracy!
One is not righteous for following it or unrighteous for ignoring it! Jesus fulfilled the whole law and rendered it obsolete! We are under the New covenant- not the Mosaic covenant which was not for gentiles and only temporary!
Galatians 2:
16 Knowing that a man is not justified by the works of the law, but by the faith of Jesus Christ, even we have believed in Jesus Christ, that we might be justified by the faith of Christ, and not by the works of the law: for by the works of the law shall no flesh be justified.
17 But if, while we seek to be justified by Christ, we ourselves also are found sinners, is therefore Christ the minister of sin? God forbid.
18 For if I build again the things which I destroyed, I make myself a transgressor.
19 For I through the law am dead to the law, that I might live unto God.
20 I am crucified with Christ: nevertheless I live; yet not I, but Christ liveth in me: and the life which I now live in the flesh I live by the faith of the Son of God, who loved me, and gave himself for me.
21 I do not frustrate the grace of God: for if righteousness come by the law, then Christ is dead in vain.
Galatians 3:
10 For as many as are of the works of the law are under the curse: for it is written, Cursed is every one that continueth not in all things which are written in the book of the law to do them.
11 But that no man is justified by the law in the sight of God, it is evident: for, The just shall live by faith.
12 And the law is not of faith: but, The man that doeth them shall live in them.
13 Christ hath redeemed us from the curse of the law, being made a curse for us: for it is written, Cursed is every one that hangeth on a tree:
18 For if the inheritance be of the law, it is no more of promise: but God gave it to Abraham by promise.
19 Wherefore then serveth the law? It was added because of transgressions, till the seed should come to whom the promise was made; and it was ordained by angels in the hand of a mediator.
I do not murder because the Mosaic Law says thou shalt not murder I do not because the New Testament says for me not to commit murder. Same with idolatry, theft, graven images, stealing adultery etc.! Not one of these I obey because it is part of the 613 Mosaic laws given by God, but because they are commands for the church!