0_Wizard
Vegetarianism has been around for a long time. It has roots in ancient India and Greece.
Vegetarianism has its roots in the civilizations of ancient India and ancient Greece.
chosen_History_of_vegetarianism_0
History of vegetarianism
chosen_topic_0_History_of_vegetarianism
History of vegetarianism
Vegetarianism has its roots in the civilizations of ancient India and ancient Greece. Vegetarianism is the theory and practice of voluntary non-consumption of the flesh of any animal (including sea animals), with or without also eschewing other animal derivatives (such as dairy products or eggs). The earliest records of vegetarianism as a concept and practice amongst a significant number of people concern ancient India and the ancient Greek civilizations in southern Italy and Greece. In both instances the diet was closely connected with the idea of nonviolence toward animals (called "ahimsa" in India), and was promoted by religious groups and philosophers.
Cattle slaughter in India
Cattle slaughter is a controversial topic in India because of the cattle's traditional status as an endeared and respected living being to many in Hinduism, Sikhism, Jainism and Buddhism, in contrast to cattle being considered as an acceptable source of meat by many in Islam, Christianity as well as some adherents of Indian religions. More specifically, the cow's slaughter has been shunned because of a number of reasons such as being associated with god Krishna in Hinduism, cattle being respected as an integral part of rural livelihoods and an essential economic necessity. Historically, cattle slaughter has also been opposed by various Indian religions because of the ethical principle of Ahimsa (non-violence) and the belief in the unity of all life.
Vegetarianism
Vegetarianism is the practice of abstaining from the consumption of meat (red meat, poultry, seafood, and the flesh of any other animal), and may also include abstention from by-products of animal slaughter. Vegetarianism may be adopted for various reasons. Many people object to eating meat out of respect for sentient life. Such ethical motivations have been codified under various religious beliefs, as well as animal rights advocacy. Other motivations for vegetarianism are health-related, political, environmental, cultural, aesthetic, economic, or personal preference. There are variations of the diet as well: an ovo-lacto vegetarian diet includes both eggs and dairy products, an ovo-vegetarian diet includes eggs but not dairy products, and a lacto-vegetarian diet includes dairy products but not eggs.
Vegetarianism and religion
Vegetarianism is strongly linked with a number of religions that originated in ancient India (Jainism, Hinduism and Buddhism). In Jainism, vegetarianism is mandatory for everyone; in Hinduism and Mahayana Buddhism, it is advocated by some influential scriptures and religious authorities. Comparatively, in the Abrahamic religions (Judaism, Christianity, and Islam), the Bahá'í Faith and Dharmic religions such as Sikhism, vegetarianism is not promoted by mainstream authorities, although in all these faiths there are small groups actively promoting vegetarianism on religious grounds. Most Indian religions have philosophical schools that forbid consumption of meat and Jainism institutes an outright ban on the same.
Cattle in religion and mythology
Due to the multiple benefits from cattle, there are varying beliefs about cattle in societies and religions. In some regions, especially Nepal and most states of India, the slaughter of cattle is prohibited and their meat may be taboo. Cattle are considered sacred in world religions such as Hinduism, Jainism, Buddhism, Zoroastrianism, and others. Religions in ancient Egypt, ancient Greece, ancient Israel, ancient Rome, and ancient Germany held similar beliefs. Majority of scholars explain the veneration for cattle among Hindus in economic terms, which includes the importance of dairy in the diet, use of cow dung as fuel and fertilizer, and the importance that cattle have historically played in agriculture.
Cow protection movement
The cow protection movement has been a religious and political movement aiming to protect the cows, whose slaughter has been broadly opposed by Hindus, Buddhists, Jains and Sikhs. While the opposition to slaughter of animals, including cows, has extensive and ancient roots in Indian history, the term refers to modern movements dating back to the colonial era British India. The earliest such activism is traceable to Sikhs of Punjab who opposed cow slaughter in the 1860s. The movement became popular in the 1880s and thereafter, attracting the support from the Arya Samaj founder Swami Dayananda Saraswati in the late 19th century, and from Mahatma Gandhi in the early 20th century.
Vegetarianism by country
This article deals with vegetarianism and veganism by country, comparing the prevalence of vegetarianism and veganism in each country when sources are available by the number of vegetarians and vegans, and listing food standards, laws and general cultural attitudes. Some countries have strong cultural or religious traditions that promote vegetarianism, such as in India, while in other countries secular ethical concerns dominate, including animal rights and environmental protection, along with health concerns. In many countries, food labeling laws make it easier for vegetarians to identify foods compatible with their diets.
1_Apprentice
I have some friends that eat that way, but I don't think I ever could.  I really love my steak and seafood!
0_Wizard
I don't think I could do it either, although sometimes I wish I could. I think non-consumption of the flesh of any animals is an admirable diet. 
Vegetarianism is the theory and practice of voluntary non-consumption of the flesh of any animal (including sea animals), with or without also eschewing other animal derivatives (such as dairy products or eggs).
chosen_History_of_vegetarianism_0
History of vegetarianism
chosen_topic_0_History_of_vegetarianism
Vegetarianism
Vegetarianism is the practice of abstaining from the consumption of meat (red meat, poultry, seafood, and the flesh of any other animal), and may also include abstention from by-products of animal slaughter. Vegetarianism may be adopted for various reasons. Many people object to eating meat out of respect for sentient life. Such ethical motivations have been codified under various religious beliefs, as well as animal rights advocacy. Other motivations for vegetarianism are health-related, political, environmental, cultural, aesthetic, economic, or personal preference. There are variations of the diet as well: an ovo-lacto vegetarian diet includes both eggs and dairy products, an ovo-vegetarian diet includes eggs but not dairy products, and a lacto-vegetarian diet includes dairy products but not eggs.
Meat
Meat is animal flesh that is eaten as food. Humans have hunted and killed animals for meat since prehistoric times. The advent of civilization allowed the domestication of animals such as chickens, sheep, rabbits, pigs and cattle. This eventually led to their use in meat production on an industrial scale with the aid of slaughterhouses. Meat is mainly composed of water, protein, and fat. It is edible raw, but is normally eaten after it has been cooked and seasoned or processed in a variety of ways. Unprocessed meat will spoil or rot within hours or days as a result of infection with and decomposition by bacteria and fungi.
Food and drink prohibitions
Some people abstain from consuming various foods and beverages in conformity with various religious, cultural, legal or other societal prohibitions. Many of these prohibitions constitute taboos. Many food taboos and other prohibitions forbid the meat of a particular animal, including mammals, rodents, reptiles, amphibians, fish, molluscs, crustaceans and insects, which may relate to a disgust response being more often associated with meats than plant-based foods. Some prohibitions are specific to a particular part or excretion of an animal, while others forgo the consumption of plants or fungi.
Vegetarianism and religion
Vegetarianism is strongly linked with a number of religions that originated in ancient India (Jainism, Hinduism and Buddhism). In Jainism, vegetarianism is mandatory for everyone; in Hinduism and Mahayana Buddhism, it is advocated by some influential scriptures and religious authorities. Comparatively, in the Abrahamic religions (Judaism, Christianity, and Islam), the Bahá'í Faith and Dharmic religions such as Sikhism, vegetarianism is not promoted by mainstream authorities, although in all these faiths there are small groups actively promoting vegetarianism on religious grounds. Most Indian religions have philosophical schools that forbid consumption of meat and Jainism institutes an outright ban on the same.
Veganism
Veganism is both the practice of abstaining from the use of animal products, particularly in diet, and an associated philosophy that rejects the commodity status of animals. A follower of either the diet or the philosophy is known as a vegan ( ). Distinctions are sometimes made between several categories of veganism. "Dietary vegans" (or strict vegetarians) refrain from consuming animal products, not only meat but also eggs, dairy products and other animal-derived substances. The term "ethical vegan" is often applied to those who not only follow a vegan diet but extend the philosophy into other areas of their lives, and oppose the use of animals for any purpose.
Medieval cuisine
Medieval cuisine includes foods, eating habits, and cooking methods of various European cultures during the Middle Ages, which lasted from the fifth to the fifteenth century. During this period, diets and cooking changed less than they did in the early modern period that followed, when those changes helped lay the foundations for modern European cuisine. Cereals remained the most important staple during the early Middle Ages as rice was introduced late, and the potato was only introduced in 1536, with a much later date for widespread consumption. Barley, oat and rye were eaten by the poor. Wheat was for the governing classes.
Ancient Israelite cuisine
Ancient Israelite cuisine refers to the food eaten by the ancient Israelites during a period of over a thousand years, from the beginning of the Israelite presence in the Land of Israel at the beginning of the Iron Age until the Roman period. The dietary staples were bread, wine and olive oil, but also included legumes, fruits and vegetables, dairy products, fish and meat. Religious beliefs, which prohibited the consumption of certain foods, shaped the Israelite diet. There was considerable continuity in the main components of the diet over time, despite the introduction of new foodstuffs at various stages.
1_Apprentice
Yes, I can see that it could be considered admirable for some people.  Does it pose any health benefits or risks?