A lot of things aren’t mentioned specifically in the Word of Wisdom. What about things like caffeine or supplements? Are these OK?
“The only official interpretation of ‘hot drinks’ (D&C 89:9) in the Word of Wisdom is the statement made by early Church leaders that the term ‘hot drinks’ means tea and coffee. Members should not use any substance that contains illegal drugs. Nor should members use harmful or habit-forming substances except under the care of a competent physician” (Handbook 2: Administering the Church [2010], 21.3.11).
President Boyd K. Packer said: “The Word of Wisdom was ‘given for a principle with promise’ (D&C 89:3). . . . A principle is an enduring truth, a law, a rule you can adopt to guide you in making decisions. Generally principles are not spelled out in detail. . . .
“Members write in asking if this thing or that is against the Word of Wisdom. . . . We teach the principle together with the promised blessings. There are many habit-forming, addictive things that one can drink or chew or inhale or inject which injure both body and spirit which are not mentioned in the revelation. . . . Obedience to counsel will keep you on the safe side of life” (“The Word of Wisdom: The Principle and the Promises,” April 1996 General Conference).
“Some have . . . used as an alibi the fact that drugs are not mentioned in the Word of Wisdom. What a miserable excuse. There is likewise no mention of the hazards of diving into an empty swimming pool or of jumping from an overpass onto the freeway. But who doubts the deadly consequences of such? Common sense would dictate against such behavior” (“The Scourge of Illicit Drugs,” October 1989 General Conference).
To learn more: Q and A - Physical and Emotional Health