Yea, man is the tabernacle of God , even temples; and whatsoever temple is defiled, God shall destroy that temple. Doctrine and Covenants 93:35
"Another step toward self-mastery comes from obedience to the Word of Wisdom," said Elder Russell M. Nelson of the Quorum of the Twelve in the October 1985 general conference. "Remember, it contains a 'promise, adapted to the capacity of. . . . the weakest of all saints' (Doctrine and Covenants 89:3). It was given 'in consequence of evils and designs which do and will exist in the hearts of conspiring men in the last days' (Doctrine and Covenants 89:4). Indeed, as you develop courage to say no to alcohol, tobacco, and other stimulants, you gain additional strength. You can then refuse conspiring men those seditious solicitors of harmful substances or smut. You can reject their evil enticements to your body.
"If you yield to anything that can addict, and thus defy the Word of Wisdom, your spirit surrenders to the body. The flesh then enslaves the spirit. This is contrary to the purpose of your mortal existence."