God does not want us to worry about the food’s content:
Again Jesus called the crowd to him and said, “Listen to me, everyone, and understand this. Nothing outside a man can make him ‘unclean’ by going into him. Rather, it is what comes out of a man that makes him ‘unclean.’” After he had left the crowd and entered the house, his disciples asked him about this parable. “Are you so dull?” he asked. “Don’t you see that nothing that enters a man from the outside can make him ‘unclean’? For it doesn’t go into his heart but into his stomach, and then out of his body.” In saying this, Jesus declared all foods “clean.” He went on: “What comes out of a man is what makes him ‘unclean.’ For from within, out of men’s hearts, come evil thoughts, sexual immorality, theft, murder, adultery, greed, malice, deceit, lewdness, envy, slander, arrogance and folly. All these evils come from inside and make a man ‘unclean.’” Mark 7:14-23
So Jesus taught us that it is not the food that defiles us, but rather the attitudes and thoughts that we have in our hearts and in our minds that will corrupt and destroy us. It is the greed in our hearts that leads to overeating and overdrinking. Greed is idolatry, it says in Ephesians 5:3-5:
But among you there must not be even a hint of sexual immorality, or of any kind of impurity, or of greed, because these are improper for God’s holy people. Nor should there be obscenity, foolish talk or coarse joking, which are out of place, but rather thanksgiving. For of this you can be sure: No immoral, impure or greedy person—such a man is an idolater— has any inheritance in the kingdom of Christ and of God.
Read more in Weigh Down Works!