Show I 1 BODY REQUIRES PROTEIN DIET A 1 1 V 4 i N r IA foods food classed as sources of protein prepared by th lh united slats department ol of agriculture la Is necessary iu in the diet for the growth and repair of body tissues it may yield energy also but its important function is for building and upkeep it if the diet does doeg not furnish enough protein growth Is stunted scientists its have found however that foods classed clashed as proteins are made up of combinations of certain recognized substances called amino acids and that unless the right combination of these the se Is present the food la Is an incomplete protein and unsatisfactory Us as a body builder although it may be a useful food from some other standpoint among the most popular and readily ata obtained ined sources of complete or efficient protein are lean meat of oil all kinds poultry floh eggs milk and cheese these foods are so commonly used in the american diet that moat people got get on an adequate amount of protein and need consider chiefly whether or not they are varying their supply sufficiently to avoid monotony it used to be thought that various legumes beans and peas re delatin latIn anil and some borne other articles of food cla cladd Pd as proteins could take the place of these e named above ai good sources of bodybuilding material but it has hag been found that several of these foods are incomplete proteins prot eing to be ou on the safe side it Is well to include in the dally daily menus such foods ns as are illustrated in the accompanying picture taken by the united states deportment department of agriculture all of which are known to supply protein of good quality |