You realize, don’t you, that you are the temple of God, and God himself is present in you? No one will get by with vandalizing God’s temple, you can be sure of that. God’s temple is sacred—and you, remember, are the temple. (1 Corinthians 3:16, 17 MSG)
In light of this verse, I am convinced it is sin for me to put any food or substance into my body that harms it in any way or prevents me from being my best for the LORD!