The intelligent Christian physician has an increasing knowledge of the connection between sin and disease. He is constantly striving to perfect his knowledge of the relation between cause and effect. He sees the necessity of educating those who are taking the nurse's course to be strictly temperate in all things, because carelessness in regard to the laws of health, a neglect to properly care for the body, is the cause of much of the disease on our world. A failure to care for the living machinery is an insult to the Creator. There are divinely appointed rules which, if observed, will keep human beings from disease and premature death.... MM 49.2
When a physician sees that the ailment which has taken hold of the body is the result of improper eating and drinking, yet neglects to tell the patient that his suffering is caused by a wrong course of action, he is doing the human brotherhood an injury. Present the matter tenderly, but never keep silent as to the cause of the affliction.—Letter 120, 1901. MM 49.3