The Word of Wisdom, a code of health dealing primarily with human nutrition, was promulgated as a divine revelation in 1833 by Joseph Smith, the "Mormon" Prophet. It is a part of the religious system of the Church of Jesus Christ of Latter-day Saints which declares that the care of the body is a sacred duty; and it has been practiced measurably by members of the Church with very favorable results. Three objectives have been kept in mind in the preparation of this book. First, to make clear the meaning of the Word of Wisdom in terms of modern knowledge. Second, to show that the learning of the last century confirms the teachings of the Word of Wisdom. Third, to furnish some information for the guidance, through proper nutrition, of those who seek to retain, improve or recover their health.