Appetite Not a Safe Guide.--Those foods should be chosen that best supply the elements needed for building up the body. In this choice appetite is not a safe guide. Through wrong habits of eating, the appetite has become perverted. Often it demands food that impairs health and causes weakness instead of strength. . . . The disease and suffering that everywhere prevail are largely due to popular errors in regard to diet. 
 {Child Guidance 380.3}

  Instruction Concerning a Change in Diet.--It is a mistake to suppose that muscular strength depends on the use of animal food. The needs of the system can be better supplied, and more vigorous health can be enjoyed without its use. The grains, with fruits, nuts, and vegetables, contain all the nutritive properties necessary to make good blood. These elements are not so well or so fully supplied by a flesh diet. Had the use of flesh been essential to health and strength, animal food would have been included in the diet appointed man in the beginning.  {CG 384.1}
     When the use of flesh food is discontinued, there is often a sense of weakness, a lack of vigor. Many urge this as evidence that flesh food is essential; but it is because foods of this class are stimulating, because they fever the blood and excite the nerves, that they are so missed. Some will find it as difficult to leave off flesh eating as it is for the drunkard to give up his dram, but they will be the better for the change.  {CG 384.2}
     When flesh food is discarded, its place should be supplied with a variety of grains, nuts, vegetables, and fruits, that will be both nourishing and appetizing. This is especially necessary in the case of those who are weak, or who are taxed with continuous labor.  {CG 384.3}