"And all saints who remember to keep and do these sayings, walking in obedience to the commandments, shall receive health in their navel, and marrow to their bones;
"And shall find wisdom and great treasures of knowledge, even hidden treasures;
"And shall run and not be weary, and shall walk and not faint.
"And I, the Lord, give unto them a promise, that the destroying angel shall pass by them, as the children of Israel, and not slay them. Amen." (D&C 89.)
Hot drinks, against which the people are specifically warned, are understood to include tea and coffee, and the counsel against their use was preached and published long before chemists and physiologists had recognized the deleterious effect of thein and caffein, which are poisonous alkaloids contained in the beverages named. The inhibition, however, applies in another sense to all liquids at high temperatures. To this point special interest attaches in view of recent demonstrations in science. Dr. Wm. J. Mayo, a surgeon of prominence, declared in an address delivered in San Francisco, June, 1915, that hot drinks are among the dominant causes of gastric ulcers and cancer.
The Word of Wisdom is generally but not universally observed in its entirety by the Latter-day Saints; and it is pertinent to inquire as to the results revealed by the vital statistics of the people. The Presiding Bishopric of the Church report that, for the six year period ending with 1916, deaths among Latter-day Saints in the organized Stakes, due to cancers and malignant ulcers of the stomach, averaged 15.83 per 100,000 of population. For the United States registration area as a whole, during the six year period covered by the latest available report, which, however, is earlier than the sexennium of the latest Church statistics, the average mortality from stomach cancer is 28.3 per 100,000. Deaths from all cancerous afflictions among members of the Church during the last six years averaged 31.15 per 100,000, or only 2.85 more per 100,000 than the national rate of mortality from stomach cancer alone for the six years last reported.
The statistics of the Church show for its members resident in organized communities exceptionally low death-rate, high birth-rate, and high average age at death, as compared with the official reports of corresponding data for the registration area of the country at large.
Of the certified causes of death "Mormons" lead the country in one, and that one is old age.
The Divine promise of health, prosperity, and prolonged life are in course of rich fulfilment among the Latter-day Saints, as in part the natural effect of obedience to the word of the Lord embodied in the Word of Wisdom.