A common position among many Christians in America is that the use of tobacco, alcohol, and other types of drugs (marijuana, etc.) is immoral and sinful. Paul seems to indicate that, in the context of food at least, nothing should be considered forbidden:
Now the Spirit expressly says that in later times some will depart from the faith by devoting themselves to deceitful spirits and teachings of demons, 2 through the insincerity of liars whose consciences are seared, 3 who forbid marriage and require abstinence from foods that God created to be received with thanksgiving by those who believe and know the truth. 4 For everything created by God is good, and nothing is to be rejected if it is received with thanksgiving, 5 for it is made holy by the word of God and prayer. 1 Timothy 4:1-4 ESV
What, then, is the Biblical basis for why the use of tobacco and other types of drugs are considered by many to be immoral or sinful?