The Mormon Word of Wisdom teaches against drinking conventional tea. In the same section of the Doctrine and Covenants, the Lord says that herbs are good for man. Herbal tea, unlike conventional caffeine-laden tea, is beneficial and allowable for Mormons to drink.
Mormons, regardless of their ancestry, have been counselled to avoid peyote and any other harmful drug.
While the Mormon Church does not forbid caffeines, Mormons are couselled to avoid addicting foods and drinks to keep their bodies healthy.
While the Mormon Church recognizes that caffeine is one of the dangerous chemicals in many drinks that should be avoided, it is not necessarily the reason coffee and tea are forbidden by the Word of Wisdom.
We cannot control our relatives lives and must respect their choices, even if we disapprove. God will reward us for patient service and enduring.
The Lord has commanded Mormons not to use alcohol. Even in matters of cooking, Mormons would do well not use alcohol. In matters of principle there is no compromise.
Some Mormons do not drink caffinated beverages because of the Mormon Word of Wisdom. These people are at times ridiculed by people claiming that the Mormon church is one of the larger stock holders for Coca Cola. Such false interactions are best turned into opportunities to share the Mormon Gospel with others.
In Mormonism, the Word of Wisdom says that we should avoid the use of tea, coffee, and strong drinks. In order to be baptized into the Mormon church, a person must live the Word of Wisdom, even if it means giving up old habits.
The Word of Wisdom teaches that hunting wild animals should be done only in times of need, but also to eat meat sparingly any season of the year.
To quit smoking, first resolve to never smoke again. Then throw all tobacco away. Now ask the Lord for the strength to obey the Word of Wisdom.