As the result of many years of observation and experiment certain general conclusions have been arrived at regarding the requisite amounts of food necessary for the maintenance of health and strength. Certain dietary standards have been set up which have found more or less general acceptance in most parts of the civilized world; standards which have been reinforced and added to by man’s aptitude for self-indulgence. Carl Voit, of Munich, whose long and successful life as a student of Nutrition renders his conclusions of great value, considers that an adult man of average body-weight (70-75 kilos) doing moderate muscular work requires daily 118 grams of proteid or albuminous food, of which 105 grams should be absorbable, 56 grams of fat, and 500 grams of carbohydrate, with a total fuel value of over 3000 large calories, in order to maintain the body in equilibrium. The Voit standard or daily diet is accepted more or less generally as representing the needs of the body under normal conditions of life, and the conclusions arrived at by other investigators along these same lines have been more or less in accord with Voit’s figures. In confirmation of this statement the following data may be quoted: AVERAGE DIETS. +---------------+-----------------------------------------------------+ | |Moleschott. | | | |Ranke.[1] | | | | |Forster. | | | | | |Hultgren[2] and Landergren. | | | | | | |Atwater. | | | | | | | |Studemund.[3] | | | | | | | | |Schmidt.[4]| | +------+------+------+------+------+------+------+----+ | |grams |grams |grams |grams |grams |grams |grams | | +---------------+------+------+------+------+------+------+------+----+ |Proteid | 130 | 100 | 131 | 134 | 125 | 114 | 105 | | |Carbohydrates | 550 | 240 | 494 | 523 | 400 | 551 | 541 | | |Fats | 40 | 100 | 68 | 79 | 125 | 54 | 63 | | |Fuel value | | | | | | | | | | (calories)[5] | 3160 | 2324 | 3195 | 3436 | 3315 | 3229 | 3235 | | +---------------+------+------+------+------+------+------+------+----+