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Vegetarianism |
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vegetarianism, theory and practice of eating only fruits and vegetables, thus excluding animal flesh, fish, or fowl and often butter, eggs, and milk. In a strict vegetarian, or vegan, diet (i.e., one that excludes all animal products), the nine amino acids that must be supplied by the diet can be obtained by eating foods that include both grains and legumes (e.g., beans or tofu) at any point during the day. Vitamins B12 and D can be obtained through supplements or the addition of a cup of nonfat milk or yogurt to the daily diet. Ovolactovegetarians obtain complete proteins by including milk, cheese, and eggs in their diets.
The basis of the practice of vegetarianism may be religious or ethical, economic, or nutritional, and its followers differ as to strictness of observance. Certain Hindu and Buddhist sects are vegetarian, as are Seventh-day Adventists. As a general movement vegetarianism arose about the middle of the 19th cent.; it made considerable progress in Great Britain and in the United States. In the contemporary United States, vegetarianism has gained acceptance as a practice that lowers one's risk for the "diseases of affluence," e.g., high blood pressure, heart disease, diabetes, and certain cancers. BibliographySee C. Spencer, A History of Vegetarianism (1995); T. Stuart The Bloodless Revolution (2007). vegetarianismTheory or practice of eating only plants. The vegetarian diet includes grains, vegetables, fruits, and nuts; it excludes meat, poultry, and fish, but some vegetarians eat dairy products (lactovegetarians), egg products (ovovegetarians), or both (ovolactovegetarians). Those who eat no animal products (including honey) are called vegans. Motivations vary and include ethics (both unwillingness to kill animals and abhorrence of modern methods of raising animals for meat), self-denial or religious taboo, ecology (including concern about the wastefulness and environmental costs of beef farming), and health. Vegetarians point to the many health benefits of their diet, including low rates of heart disease, diabetes, colon cancer, and obesity. While obtaining sufficient protein is seldom a problem in affluent societies, vegetarians must be careful to consume enough iron and, especially for vegans, calcium and vitamins D and B12. The most influential early proponent of vegetarianism was Pythagoras, in the 6th century BC. Many Hindu sects and most Buddhists are vegetarian, and much of the world eats hardly any meat because it is unavailable. The Enlightenment led to a humane concern for animals; in the 19th century Britain became a major centre of vegetarianism, and vegetarian movements soon arose in Germany, the U.S., and other countries. Vegetarianism (Russian, vegetarianstvo), a system of nutrition that excludes from the diet all products of animal origin, including fish and poultry. Followers of vegetarianism consider only vegetable food to be natural nutrition for humans. Some vegetarians (“old vegetarians”) use plant products only in raw form in their diet, others use them also in broiled or cooked form, and the “young vegetarians” include milk products and eggs along with vegetable foods. Nutrition recommended by the “young vegetarians” covers all body requirements for nutritional elements and is, therefore, entirely acceptable from a physiological standpoint. Vegetarianism became widespread in Europe in the first half of the 19th century, especially in countries where vegetable foods, including fruits, were the foods most readily available to wide sections of the population; in Russia it came into use somewhat later and primarily among various religious sects (Dukhobors, Beloriztsy, and “svobodniki,” among others) and certain strata of the intelligentsia (especially Tolstoyans). Vegetarianism has not become widespread in the USSR. Contemporary nutritional science, based on the researches of physiology and biochemistry, recommends a mixed diet (vegetable and animal products). Foods of animal origin contain complex amino acids which are very important for the life processes of the human body. In order to meet the body’s physiological requirement for protein with plant foods only, a greater quantity of these foods are necessary; overloading the digestive organs with plant foods may cause a number of disturbances and even chronic illnesses. Moreover, vegetable protein is assimilated considerably more poorly than animal protein. Thus, about 48-70 percent of the protein of black bread is assimilated, 60-68 percent of that of potato, 60-70 percent of that of buckwheat groats, and 50 percent of that of millet, whereas up to 98 percent of the protein of meat, fish, eggs, and milk is assimilated, Animal products (milk, eggs, meat, liver, fatty fish) contain vitamins A, B, among others. However, physiological requirements for carbohydrates, fats, mineral salts, and vitamins may also be supplied by vegetable foods, even under conditions of increased muscular exertion, such as active sports. A vegetarian diet is used for therapeutic purposes in certain illnesses, such as hypertension, atherosclerosis, cardiovascular diseases, acute and chronic kidney diseases, uric acid diathesis, and gout. In such cases it is beneficial to add milk and eggs to the diet. A temporary transfer to a vegetarian diet is effected gradually, since rapid transfer may cause severe weakness and a depressed state. REFERENCESPevzner, M. I. “Znachenie ovoshchei i fruktov v pitanii.” Trudy kliniki lechebnogo pitaniia, 1940, vol. 1.Pokrovskii, A. A. “Fiziologo-biokhimicheskie aspekty pitaniia i pishchevaia promyshlennost’ ” Prikladnaia biokhimiia i mikrobiologiia, 1967, vol. 3, issue 5. I. S. SAVOSHCHENKO Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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