We must admit, however, that many cannot maintain their weight and keep their full allowance of energy on a vegetarian diet. Where you find a vegetarian whose skin is white, whose lips are colorless, who is thin and seemingly in need of nourishment, you can rest assured that the diet is not agreeing with him. Such persons in virtually every instance need animal food of some sort. It is therefore wise, if you are searching for a diet that is capable of developing in you the greatest degree of mental and physical efficiency, to make a careful study of your individual condition and requirements. After you have acquired sufficient knowledge on the subject it might even be well to do some experimenting, and in that way determine what particular diet is best suited to your needs. It is extremely difficult, however, for one to adopt a regimen which is radically different from that of those with whom he associates. You may have sufficient enthusiasm for a time to subsist on a nut-and-fruit diet or on an uncooked diet, but when your own family and friends are using other foods at all times the temptation to vary your own diet is sometimes too strong to resist, consequently you will be inclined gradually to resume the general regimen of those with whom you live. One can, however, maintain good health without being what might be termed a dietetic crank. To be sure, where one is suffering from a disease or is definitely in need of some special diet in order to secure certain results, a very rigid diet is of great importance and should be adhered to strictly. After such results have been achieved, however, and after normal health is regained, you can secure at almost any well supplied table a selection of foods which will furnish satisfactory nourishment.