A vegetarian who eats plant products only, especially one who uses no products derived from animals, as fur or leather.
[Short for VEGETARIAN.]
veganism veg'an·ism n.
Dictionary:
veg·an (vē'gən, vĕj'ən) ![]() |
[Short for VEGETARIAN.]
veganism veg'an·ism n.| 5min Related Video: vegan |
| Wordsmith Words: vegan |
(VEE-guhn)
noun
One who does not consume animal products.
adjective
Made with no animal ingredients.
Etymology
Coined in 1944 by Donald Watson (1910-2005) to describe a "non-dairy vegetarian"; formed from the first three and last two letters of the word vegetarian
| World of the Body: vegan |
Vegan diets comprise only plant foods and exclude all meat, poultry, fish, dairy products, eggs, and honey. Although many poor peasant agriculturalist populations have diets based on plant foods with only small amounts of animal food, there are no traditional societies which follow a completely vegan diet. The word was coined by Donald Watson as ‘the beginning and end of vegetarian’, and the first vegan society was formed in Britain in 1944.
The reasons for choosing a vegan diet are similar to those for choosing a vegetarian diet, but the philosophy is more logical because dairy foods, which are included in vegetarian diets, cannot be produced efficiently without the slaughter of cattle. To produce milk a cow must give birth to a calf: most of these calves are reared and slaughtered for meat, and the cows themselves are also slaughtered for meat as soon as they fail to conceive or develop other health problems. The production of eggs involves the slaughter of male chicks and of old laying hens.
Unfortified plant foods contain all the nutrients needed by humans except for vitamin B12 and vitamin D. Animals used for meat obtain vitamin B12 from bacteria in the rumen (cattle and sheep), bacteria in the soil (pigs), or by eating their own faeces (rabbits). Vitamin B12 is now synthesized cheaply and added to many foods including breakfast cereals, yeast extracts, and various soya-based foods. Vitamin D is synthesized in the skin in response to sunlight, and is also added to several foods including margarine. Therefore, with fortification and sunlight, vegan diets can supply all the nutrients needed by humans. Vegan diets are usually higher than non-vegetarian diets in some nutrients such as fibre, vitamin C, vitamin E, potassium, and magnesium, and lower than non-vegetarian diets in protein, riboflavin, vitamin B12, and calcium. Vegan diets can be low in iodine and selenium, but this depends on the soil in which the plants are grown.
The nutritional status and health of vegans has been investigated in a number of small studies. These have shown that most vegans are adequately nourished and in satisfactory health, and that vegans are thinner and have lower blood cholesterol concentrations than comparable non-vegetarians. Vegan children grow normally provided that they receive well planned diets. There have been some cases of nutritional deficiency in vegans, notably vitamin B12 deficiency in vegans who were not eating foods fortified with this vitamin (or taking a vitamin B12 supplement).
There is little information on the long-term health of vegans. Epidemiological studies of mortality in vegetarians have included some vegans, and the mortality rate of these vegans has been similar to that of the vegetarians, but the total number studied throughout the world is still far too small to be able to draw any firm conclusions. A diet comprised largely or entirely of plants has several potential advantages for health, land use, and ecological impact, and looking further ahead may be the diet of choice for the extended exploration of space. Further scientific research on plant-based diets and the health of vegans is therefore a priority for the future.
— Tim Key
Bibliography
| Food and Nutrition: vegans |
Those who consume no foods of animal origin. (Vegetarians often consume milk and/or eggs.)
| Food and Fitness: vegan |
A person who eats only food of plant origin. Strict vegans eat no dairy products, eggs, or even honey. Their diet of cereals, vegetables, fruit, and nuts must provide all the essential nutrients. With careful planning this is possible, but there is a risk of vitamin B12 deficiency because no plants contain this vitamin. Vegans are usually advised to take B12 supplements made by bacterial fermentation.
Spirulina, a blue-green alga used as a staple food by the Aztecs of Mexico and by inhabitants around Lake Chad, Africa, is sold in some health food shops as a high-protein food supplement, rich in minerals and vitamins (including B12). It is true that Spirulina contains B12-related compounds that act as growth factors for Lactobacillus (the legal definition of vitamin B12), but these compounds do not appear to have B12 activity in humans; they may even act as antivitamins. Vitamin B12 activity obtained from some Spirulina extracts or concentrates may be due to contamination with faecal bacteria, some of which do form active vitamin B12. Vegans who use Spirulina as their source of B12 should be cautious.
Some vegans may also need zinc supplements if their diet has a high content of phytates, chemicals that can reduce the availability of zinc. Vegans who exercise a lot may be especially susceptible to a zinc deficiency because of large losses in sweat and urine. However, excessive zinc consumption can produce several harmful effects (including inhibition of copper absorption that can lead to anaemia), so zinc supplementation should not exceed 15 milligrams per day.
Most research indicates that vegans tend to be healthier than people who eat animal products. They also have a lower risk of heart disease, certain cancers, and metabolic and digestive disorders. See also vegetarian.
| Alternative Medicine Encyclopedia: Veganism |
Definition
Veganism is a system of dietary and lifestyle practices that seeks to promote health and peace while reducing the suffering of both people and animals. Vegans (pronounced vee-guns) are vegetarians who do not eat any foods (eggs, dairy products, meat, etc.) derived from animal sources. Most vegans also do not use products that require for their production the death or suffering of animals, such as leather, fur, wool, and certain cosmetics.
Origins
The word "vegetarian" was coined in England in 1847 by the founders of the Vegetarian Society of Great Britain. "Vegetarian" has been used to describe people who do not eat meat, but do consume dairy products and eggs. The Vegan Society was founded in England in 1944 by Donald Watson and others who believed that vegetarians should strive to exist without eating or using any animal products at all. Watson stated that the crisis of World War II may have been a motivation behind his founding of the Vegan Society, because he saw so much turmoil and suffering in the world around him. The Vegan founders believed that the first step to creating a better world would be to develop a diet that did not cause the death or suffering of any living beings. The term "vegan" is derived from the Latin word vegetus, which means "full of life," which the founders hoped their system would be. "Vegan" also starts with the same three letters as "vegetarian," and ends with the last two, as its founders believed they were starting with vegetarian ideas and taking them to their logical conclusion.
The American Vegan Society (AVS) was founded in 1960 by Jay Dinshah. The same year, the AVS began to publish a journal called Ahimsa, which is a Sanskrit word that means "not causing harm" and "reverence for life." Dinshah and others conceived veganism to be a philosophy of living that has nonviolence, peace, harmony, honesty, service to the world, and knowledge as its goals. In 1974, the AVS became affiliated with the North American Vegetarian Society, which was formed to bring together all of the vegetarian groups in North America.
Since the 1970s, there has been a vast amount of research concerning nutrition and diet. It has been discovered that diets that are centered around meat and dairy products, such as the typical American diet, are high in cholesterol and saturated fat but low in fiber. These diets have been linked to many health problems, including heart disease, strokes, and diabetes, which together cause 68% of all the deaths in the United States. Thus, the interest in diets that reduce or eliminate foods that contribute to these conditions has grown considerably. In 1992, the Vegetarian Times magazine took a poll that estimated that 13 million Americans, or 5% of the population, consider themselves vegetarian. Of the vegetarians, 4% are vegans, which amounts to nearly 520,000 Americans.
Benefits
Vegan diets are often recommended as dietary therapy for heart disease, high cholesterol, diabetes, strokes, cancer, obesity, arthritis, allergies, asthma, environmental illness, hypertension, gout, gallstones, kidney stones, ulcers, colitis, digestive disorders, premenstrual syndrome, anxiety, and depression. At present, however, no studies exist that define the efficacy of vegan diets in treating these conditions. Nevertheless, a well-designed vegan diet is an effective weight-loss diet, and is an economical and easy preventive health practice.
Description
Veganism can be better understood by considering the ethical, ecological, and health reasons that motivate vegans.
Ethical Considerations
A vegan lifestyle seeks to promote awareness, compassion, and peace. Veganism is an ethical system as well as a diet. Ethics refers to rules of conduct or the ways in which people interact with others and the world. One poll in England showed that 83% of vegans listed ethical reasons as their main consideration in their practices. Vegans believe that health encompasses not only individuals' bodies, but also includes healthy relationships between people and their actions towards other living things, the earth, and the environment. Vegans believe that as long as animals are treated cruelly and are killed for meat, then the world's ethical and spiritual health will suffer. Vegans believe that people should become aware of how their food choices are creating suffering and affecting the health of the world as a whole. For instance, it has been estimated that the grain that goes to feed livestock in America could feed 1.3 billion people, which would relieve a large measure of the pain and suffering in the world.
Vegans claim that egg and dairy production may cause animals just as much suffering as killing them for meat, because modern factory farming treats animals as unfeeling machines instead of as living beings. Eggs are produced by keeping chickens in small cages and in painful and unsanitary conditions. Vegans claim that dairy cattle are subjected to cruel treatment as well, being bred artificially and caged for much of their lives. Dairy cattle are also injected with hormones that make them produce unnaturally high quantities of milk while weakening their immune systems and making them sick and unhealthy. Large amounts of antibiotics need to be used on weakened cows, which in turn affects the health of humans and creates diseases that are resistant to medicine. Dairy farming causes death to cows as well because undesirable or old cows are slaughtered for meat.
Other animal products are avoided by vegans as well. Leather, wool, and fur are not used because they result in the suffering of animals from their production. Some vegans do not use honey because they believe that the collection of honey is harmful to bees. Many vegans avoid using sugar, because some sugar is made by using charcoal made from the bones of dead cattle. Vegans also do not use products that have been tested on animals, and vegans are active in resisting the use of animals for dissection and medical experiments. Vegans are typically outspoken against hunting and the cruel treatment of animals in zoos or for entertainment (e.g., cockfighting and bullfighting).
Helping the Earth
Vegans believe that their dietary and lifestyle practices would contribute to a healthier world ecology. Vegans can cite many statistics that show that the American meat-centered diet is contributing to environmental problems. The main thrust of vegans' ecological position is that it takes many more resources to produce meat than it does to provide a grain-based diet, and people can be fed better with grain than with meat. For instance, it takes 10 lbs (4.5 kg) of grain to make 1 lb (0.45 kg) of beef. On one acre of land, 20,000 lbs (9,000 kg) of potatoes can be grown compared to 125 lbs (57 kg) of beef during the same time. In America, livestock consume six and a half times as much grain as the entire population. Different dietary habits here could improve the world, vegans argue. Environmental problems caused by the inefficient production of livestock include topsoil loss, water shortages and contamination, deforestation, toxic waste, and air pollution.
Health Considerations
People who eat vegetarian diets are at lower risk for many conditions, including heart disease, certain cancers, diabetes, obesity, high blood pressure, gallstones, and kidney stones. A vegan diet contains no cholesterol, because cholesterol is found only in animal products. Diets high in cholesterol and saturated fat are responsible for heart disease. American men overall have a 50% risk of having a heart attack, while vegans have only a 4% risk. Vegans consume as much as four times the amount of fiber as the average person, and high fiber intake is believed to reduce the risk of heart disease, diabetes, cancer, and digestive tract problems. Vegan diets are also high in protective nutrients that are found in fruits and vegetables, such as antioxidants.
A vegan diet can also reduce exposure to chemicals that are found in meat and dairy products, such as pesticides and synthetic additives such as hormones. Chemicals tend to accumulate in the tissue of animals that are higher in the food chain, a process called bioaccumulation. By not eating animal products, vegans can avoid the exposure to these accumulated toxins, many of which are believed to influence the development of cancer. It is important, however, for vegans to eat organically produced vegetables and grains, as vegans who eat nonorganic food get high doses of pesticides. One study showed that DDT, a cancer-causing pesticide, was present in significant levels in mother's milk for 99% of American women, but only 8% of vegetarian women had significant levels of the pesticide. The risks of women getting breast cancer and men contracting prostate cancer are nearly four times as high for frequent meat eaters as for those who eat meat sparingly or not at all. High consumption of dairy products has been linked to diabetes, anemia, cataracts, and other conditions.
Vegan diets may also be beneficial for those with allergic or autoimmune disorders such as asthma, allergies, and rheumatoid arthritis. Animal products cause allergic reactions in many people, and studies have shown that allergic responses and inflammation may be improved by eliminating animal products from the diet. Furthermore, vegan diets are effective weight loss diets, because the high levels of fiber and low levels of fat make it possible for dieters to eat until they are full and still take in lower calories than other diets.
Preparations
Those considering veganism may wish to adopt the diet gradually to allow their bodies and lifestyles time to adjust to different eating habits. Some nutritionists have recommended "transition" diets to help people change from a meat-centered diet in stages. Many Americans eat meat products at nearly every meal, and the first stage of a transition diet is to substitute just a few meals a week with wholly vegetarian foods. Then, particular meat products can be slowly reduced and eliminated from the diet and replaced with vegetarian foods. Red meat can be reduced and then eliminated, followed by poultry and fish. For vegans, the final step would be to substitute eggs and dairy products with other nutrient-rich foods. Individuals should be willing to experiment with transition diets, and be patient when learning how combine veganism with such social activities as dining out.
Vegans should become informed on healthful dietary and nutrition practices as well. Sound nutritional guidelines include decreasing the intake of fat, increasing fiber, and emphasizing fresh fruits, vegetables, legumes, and whole grains in the diet while avoiding processed foods and sugar. Vegans can experiment with meat substitutes, foods that are high in protein and essential nutrients. Tofu and tempeh are soybean products that are high in protein, calcium, and other nutrients. There are "veggie-burgers" that can be grilled like hamburgers, and vegan substitutes for turkey and sausage with surprisingly realistic textures and taste. Furthermore, there are many vegan cookbooks on the market, as cooking without meat or dairy products can be challenging for some people.
Vegans should also become familiar with food labels and food additives, because there are many additives derived from animal sources that are used in common foods and in such household items as soap. Vegans may also find social support at local health food stores or food cooperatives.
Precautions
Vegans should be aware of particular nutrients that may be lacking or need special attention in non-animal diets. These include protein, vitamin B12, riboflavin, vitamin D, calcium, iron, zinc, and essential fatty acids. Furthermore, pregnant women, growing children, and people with certain health conditions have higher requirements for these nutrients.
Vegans should be sure to get complete proteins in their diets. A complete protein contains all of the essential amino acids, which are essential because the body cannot make them. Meat and dairy products generally contain complete proteins, but most vegetarian foods such as grains and legumes contain incomplete proteins since they lack one or more of the essential amino acids. Vegans can easily obtain complete proteins by combining particular foods. For instance, beans are high in the amino acid lysine but low in tryptophan and methionine. Rice is low in lysine and high in tryptophan and methionine. Thus, a combination of rice and beans makes a complete protein. In general, combining legumes such as soy, lentils, beans, and peas with grains like rice, wheat, or oats forms complete proteins. Nuts or peanut butter with grains such as whole wheat bread also forms complete proteins. Proteins do not necessarily need to be combined in the same meal, but should generally be combined over a period of a few days.
Getting enough vitamin B12 is an issue for vegans because meat and dairy products are its main sources. Vegans are advised to take vitamin supplements containing B12. Spirulina, a nutritional supplement made from algae, is used as a vegetarian source of this vitamin, as are fortified soy products and nutritional yeast. The symptoms of vitamin B12 deficiency include muscle twitching and irreversible nerve damage; weakness; numbness and tingling in the extremities; and a sore tongue.
Riboflavin (vitamin B2) is also generally found in high amounts in animal sources, so vegans should be aware of this fact and take a supplement if necessary. Vegetable sources of riboflavin include brewer's yeast, almonds, mushrooms, whole grains, soybeans, and green leafy vegetables.
Vitamin D can be obtained from vitamin supplements, fortified foods, and sunshine. Calcium can be obtained from enriched tofu, seeds, nuts, legumes, and dark green vegetables, including broccoli, kale, spinach, and collard greens. Iron is found in raisins, figs, legumes, tofu, whole grains (particularly whole wheat), potatoes, and dark green leafy vegetables, and by cooking with iron skillets. Iron is absorbed more efficiently by the body when iron-containing foods are eaten with foods that contain vitamin C, such as fruits, tomatoes, and green vegetables. Zinc is abundant in nuts, pumpkin seeds, legumes, whole grains, and tofu. Getting enough omega-3 essential fatty acids may be an issue for vegans. These are found in walnuts, canola oil, and such supplements as flaxseed oil. Vegans should consider purchasing organically grown food when possible, to avoid exposure to pesticides and to contribute to sound agricultural practices.
Research & General Acceptance
Scientists have analyzed vegetarianism more frequently, mainly because there are higher numbers of lacto-ovo vegetarians around the world than there are vegans. Studies have repeatedly shown many benefits of plant-based diets.
A significant study of veganism was published in 1985 in the Journal of Asthma, which used a vegan diet to treat asthma. After one year, 92% of patients exhibited significant improvement in asthma symptoms and in such measurements as lung capacity and cholesterol levels. People on the diet also experienced fewer episodes of colds and influenza. Researchers concluded that the vegan diet was helpful for asthma because it reduced food allergies, which are commonly caused by animal products. Scientists theorized that the animal-free diet also may have altered the patients' prostaglandin levels. Prostaglandins are hormone-like substances responsible for many body processes including allergic reactions. Finally, researchers proposed that the high quantity of antioxidants and plant nutrients in the vegan diet may have contributed to strengthened immune systems.
Resources
Books
Barnard, Neal, M.D. Food For Life. New York: Harmony, 1993.
Stepaniak, Joanne. The Vegan Sourcebook. Los Angeles: Lowell House, 1998.
Periodicals
Ahimsa. American Vegan Society (AVS). 56 Dinshah Lane. PO Box H. Malaga, NY 08328. (609) 694-2887.
Vegetarian Journal. Vegetarian Resource Group (VRG). PO Box 1463. Baltimore, MD 21203.
Organizations
Vegan Outreach. 211 Indian Drive. Pittsburgh, PA 15238. (412) 968-0268.
[Article by: Douglas Dupler]
| Obscure Words: vegan |
| Wikipedia: Veganism |
Veganism is a diet and lifestyle that seeks to exclude the use of animals for food, clothing, or any other purpose.[1][2] Vegans endeavor not to use or consume animal products of any kind.[3] The most common reasons for becoming a vegan are ethical commitment or moral conviction concerning animal rights or welfare, the environment, human health, and spiritual or religious concerns.[2][4][5] Of particular concern to many vegans are the practices involved in factory farming and animal testing, and the intensive use of land and other resources for animal farming.
Vegan diets (sometimes called strict or pure vegetarian diets) are a subset of vegetarian diets. Properly planned vegan diets are healthful and have been found to satisfy nutritional needs.[6] Poorly planned vegan diets can be low in levels of calcium, iodine, vitamin B12 and vitamin D. Vegans are therefore encouraged to plan their diet and take dietary supplements as appropriate.[6] Various polls have reported vegans to be between 0.2%[4] and 1.3%[7] of the U.S. population, and between 0.25%[5] and 0.4%[8] of the UK population.
Contents |
The Vegan Society was founded in 1944 by Donald Watson and Elsie Shrigley, in response to the broadening of the term "vegetarian" to include the eating of dairy products.[9] The first vegan society in the United States was founded in California in 1948 by Dr. Catherine Nimmo and Rubin Abramowitz,[10] and was subsequently incorporated into the the American Vegan Society after its founding in 1960 by Jay Dinshah.[11] In 1984, a 'breakaway' group from the Vegan Society, the Movement for Compassionate Living was founded by former Vegan Society secretary Kathleen Jannaway to promote sustainable living and self-sufficiency in addition to veganism.[12] Today, there are many vegan societies worldwide, including national societies in Australia, India, New Zealand, and South Africa.[nb 1] In 1993, the advocacy organization which would become Vegan Outreach was founded by Matt Ball and Jack Norris.[13]
In 1994, the annual World Vegan Day was established on November 1st, the day of the Vegan Society's founding.[14]
The word vegan was coined in 1944 by Donald Watson, who combined the first three and last two letters of vegetarian to form "vegan," which he saw as "the beginning and end of vegetarian."[9][15] Vegan is pronounced /ˈviːɡən/[16] or /ˈvɛdʒən/,[17] although Watson considered the latter pronunciation to be incorrect.[18] The Vegan Society defines veganism in this way:
[T]he word "veganism" denotes a philosophy and way of living which seeks to exclude — as far as is possible and practical — all forms of exploitation of, and cruelty to, animals for food, clothing or any other purpose; and by extension, promotes the development and use of animal-free alternatives for the benefit of humans, animals and the environment. In dietary terms it denotes the practice of dispensing with all products derived wholly or partly from animals.[1]
Other vegan societies use similar definitions.[19][20][21]
The term "animal product" in a vegan context refers to any material derived from animals for human use.[2] Notable animal products include meat, poultry, seafood, eggs, dairy products, honey, fur, leather, wool, and silk.[3] Common animal by-products include gelatin, lanolin, rennet, whey, casein, beeswax, isinglass, and shellac.[3]
Animal products are ingredients in countless products and are used in the production of—though not always present in the final form of—many more.[22][23][24] Many of these ingredients are obscure,[25][26] also have non-animal sources,[27] and may not even be identified.[22] Although some vegans attempt to avoid all these ingredients, Vegan Outreach argues that "it can be prohibitively expensive and time-consuming to shun every minor or hidden animal-derived ingredient," and therefore that doing what is "best for preventing suffering" is more important than identifying and excluding every animal ingredient.[28][29]
Although honey and silk are by definition animal products, and although abstaining from honey is a requirement for membership in the American and British Vegan Societies,[30][31] some vegans consider their use and the use of other insect products to be acceptable.[32]
Data regarding the number of vegans is available in some countries.
United States
A 2002 Time/CNN poll found that 4% of American adults consider themselves vegetarians, and 5% of vegetarians consider themselves vegans, which implies that 0.2% of American adults are vegans.[4] A 2006 poll conducted by Harris Interactive in the US listed specific foods and asked respondents to indicate which items they never eat, rather than asking respondents to self-identify. The survey found that of the 1,000 adults polled, 1.4% never eat meat, poultry, fish, seafood, dairy products, or eggs and were therefore essentially vegan in their eating habits. The survey also found that about 1.4% of men and 1.3% of women have vegan diets.[7]
United Kingdom
In 2002, the UK Food Standards Agency carried out a National Diet and Nutrition Survey, which reported that 5% of respondents self-identified as vegetarian or vegan. Though 29% of that 5% said they avoided "all animal products", only 5% reported avoiding dairy products.[5] Based on these figures, approximately 0.25% of the UK population follow a vegan diet. In 2005, The Times estimated there were 250,000 vegans in Britain, which suggests around 0.4% of the UK population is vegan.[8]
The Netherlands
The Netherlands Association for Veganism estimates there to be approximately 16,000 vegans in the Netherlands, or around 0.1% of the Dutch population.[35]
Sweden
Various polls and research conducted during the 1990s put the overall percentage of Swedish residents being vegan at between 0.27% and 1.6%.[36] A study of the eating patterns of 2,538 Swedish children of ages 4, 8 and 11 by the Swedish National Food Administration found that about 1% of the children were vegetarian, less than 1% were lacto-vegetarians, but found no children to be vegans.[37] A 1996 study of over 67,000 Swedish students between the ages of 16 and 20 found 0.1% to be vegan,[38] and found a particularly high concentration of vegans in Umeå where 3.3% of the students were vegan.[39]
Norway
A 1996 study of 952 15-year old students in Bergen found 0.2% of females to be vegan, but found no male participants to be vegan.[38]
Germany
The German Federal Study on Food-Consumption reported 0.1% of female and 0.05% of male participants to be vegan.[40]
The central ethical question related to veganism is whether it is right for humans to use and kill animals. This question is essentially the same as the fundamental question of animal rights, so it has been animal rights ethicists who have articulated the philosophical foundations for veganism. The philosophical discussion also therefore reflects the division of viewpoints within animal rights theory between a rights-based approach, taken by both Tom Regan and Gary Francione, and a utilitarian one, promoted by Peter Singer. Vegan advocacy organizations generally adhere to some form animal rights viewpoint, and oppose practices which violate these rights.
Tom Regan, professor emeritus of philosophy at North Carolina State University, argues that animals are entities which possess "inherent value"[42] and therefore have "basic moral rights," and that the principal moral right they possess is "the right to respectful treatment."[43] Regan additionally argues that animals have a "basic moral right not to be harmed," which can be overridden only when the individual's right not to be harmed is "morally outweighed" by "other valid moral principles."[44][45] From this "rights view," Regan argues that "animal agriculture, as we know it, is unjust" even when animals are raised "humanely."[41][46] Regan argues against various justifications for eating meat including that "animal flesh is tasty," that it is "habit" for "individuals and as a culture", that it is "convenient," that "meat is nutritious," that there is an obligation the economic interests of farmers or to the economic interests of a country, or that "farm animals are legal property," and finds that all fail to treat animals with the respect due to them by their basic rights.[47] Regan therefore argues that "those who support current animal agriculture by purchasing meat have a moral obligation to stop doing so" and that "the individual has a duty to lead a vegetarian way of life."[48]
Gary L. Francione, professor of Law at Rutgers School of Law-Newark, argues that animals are sentient, and that this is sufficient to grant them moral consideration.[49] Francione argues that "all sentient beings should have at least one right—the right not to be treated as property" and that there is "no moral justification for using nonhumans for our purposes."[49] Francione further argues that adopting veganism should be regarded as the "baseline" action taken by people concerned with animal rights.[49]
Peter Singer, professor of bioethics at Princeton, argues that there is "no moral justification" for refusing to take sentient animal suffering into consideration in ethical decisions.[50] Singer argues that an animal's interests warrant equal consideration with the interests of humans, and that not doing so is "speciesist."[50] Based upon his evaluation of these interests, Singer argues that "our use of animals for food becomes questionable—especially when animal flesh is a luxury rather than a necessity."[51] Singer does not contend that killing animals is always wrong, but that from a practical standpoint it is "better to reject altogether the killing of animals for food, unless one must do so to survive."[52] Singer therefore advocates both veganism and improved conditions for farm animals as practical means to reduce animal suffering.[53][54][55]
Vegan advocacy organizations generally regard animals to have some form of rights, and therefore consider it unethical to use animals in ways that infringe those rights.[56][57][58][59] The Vegan Society, for example, maintains that "animals have the right not to be farmed,"[56] Vegan Action asserts that "animals are not ours to use,"[57] PETA states that "animals are not ours to eat, wear, experiment on, or use for entertainment,"[58] and Mercy for Animals writes that "non-human animals are irreplaceable individuals with morally significant interests and hence rights."[59]
Advocacy organizations regard practices such as factory farming,[60][61][62] animal testing,[3][63] and displaying animals for entertainment in circuses,[64] rodeos,[65] and zoos[66] as cruel to animals.
Steven Davis, a professor of animal science at Oregon State University, argues that following Tom Regan's "least harm principle" may not necessarily require the adoption of a vegan diet because there are non-vegetarian diets which "may kill fewer animals" than are killed in the intensive crop production necessary to support vegetarian diets. In particular, Davis calculates that a diet partially based on large grass-fed ruminants like cows, would kill fewer animals than a vegan diet.[67]
Davis's analysis has itself been criticized, notably by Gaverick Matheny, a Ph.D. candidate in agricultural economics at the University of Maryland, College Park, and by Andy Lamey, a Ph.D. student at the University of Western Australia. Matheny argues that Davis's miscalculates the number of animal deaths based on land area rather than per consumer, and incorrectly equates "the harm done to animals … to the number of animals killed." Matheny argues that per-consumer, a vegan diet would kill fewer wild animals than a diet adhering to Davis's model, and that vegetarianism "involves better treatment of animals, and likely allows a greater number of animals with lives worth living to exist."[68]
Lamey characterizes Davis's argument as "thought-provoking", but asserts that Davis's calculation of harvesting-related deaths is flawed because it is based upon two studies; one includes deaths from predation, which is "morally unobjectionable" for Regan, and the other examines production of a nonstandard crop, which Lamey argues has "little relevance" to the deaths associated with typical crop production. Lamey also argues, like Matheny, that accidental deaths are ethically distinct from intentional ones, and that if Davis includes accidental animal deaths in the moral cost of veganism he must also evaluate the increased human deaths associated with his proposed diet, which Lamey argues leaves "Davis, rather than Regan, with the less plausible argument."[69]
William Jarvis, writing for the Nutrition & Health Forum newsletter, attacks "ideologic vegetarians," whom he claims believe that "all life is sacred" and that "all forms of life have equal value," saying that these beliefs "can lead to absurdities such as allowing mosquitoes to spread malaria, or vipers to run loose on one's premises."[70] However, the ideas that all life is sacred or that all forms of life have equal value are not universal among vegans, many of whom do not grant moral standing to insects. As the advocacy organization Vegan Action notes, "[m]any vegans, however, are not opposed to using insect products, because they do not believe insects are conscious of pain."[71] A similar view is expressed by Gary Varner, a vegan philosophy professor at Texas A&M University.[72] "The case for thinking that all vertebrates can feel pain is thus very strong, while the case for thinking that invertebrates can feel pain is extremely weak by comparison (with the possible exception of cephalopods like octopus and squid)."[73] Varner and other vegans who share his view do not feel obliged to respect the rights of mosquitoes, as they do not believe mosquitoes can suffer. Vegans and vegetarians also typically do not deny the moral right of self-defence.[74] They therefore are no more committed to allowing dangerous vipers to run loose in their homes than advocates of human rights are committed to not fighting back against human attackers.
The American Dietetic Association annually publishes its position on vegan and vegetarian diets:
[A]ppropriately planned vegetarian diets, including total vegetarian or vegan diets, are healthful, nutritionally adequate, and may provide health benefits in the prevention and treatment of certain diseases. Well-planned vegetarian diets are appropriate for individuals during all stages of the life cycle, including pregnancy, lactation, infancy, childhood, and adolescence, and for athletes.[6]
In 2003, the Dietitians of Canada joined with the ADA to release a position paper to the same effect.[75] Similarly, the British Nutrition Foundation considers "well balanced" vegetarian diets to be nutritionally adequate,[76] and the Irish Nutrition and Dietetic Institute considers "well planned" vegetarian diets to be "nutritionally balanced for both adults and children".[77]
In contrast, both the Swiss Federal Nutrition Commission and the German Society for Nutrition recommend against a vegan diet, particularly for children, the pregnant and the elderly.[78][79]
Scientists such as Roger Segelken and T. Colin Campbell believe that some diets (such as the standard American diet) are detrimental to health, and they believe that a vegan diet represents an improvement,[80][81] in part because vegan diets are often high enough in fruit and vegetables to meet or exceed the recommended fruit and vegetable intakes.
According to the American Dietetic Association and Dietitians of Canada, diets that avoid meat tend to have lower levels of saturated fat, cholesterol, and animal protein, and higher levels of carbohydrates, fiber, magnesium, potassium, folate, and antioxidants, such as vitamins C and E, and phytochemicals.[6] People who avoid meat are reported to have lower body mass index than those following the average Canadian diet; from this follows lower death rates from ischemic heart disease; lower blood cholesterol levels; lower blood pressure; and lower rates of hypertension, type 2 diabetes, and prostate and colon cancer.[6]
A 1999 meta-study of five studies comparing vegetarian and non-vegetarian mortality rates in western countries found the mortality rate due to ischemic heart disease 26% lower among vegans compared to regular meat eaters, but 34% lower among ovolactovegetarians and those who ate fish but no other meat. No significant difference in mortality was found from other causes.[82] A 2003 review of three studies comparing mortality rates among British vegetarians and non-vegetarians found only a nonsignificant reduction in mortality from ischemic heart disease, but noted that the findings were compatible with the significant reduction found in the 1999 review.[83]
A 2006 study found that in people with type 2 diabetes a low-fat vegan diet reduced weight, BMI, total cholesterol, and LDL cholesterol and did so to a greater extent than the diet prescribed by the American Diabetes Association.[84]
The American Dietetic Association considers "appropriately planned" vegan diets "nutritionally adequate",[6] but poorly planned vegan diets can be deficient in nutrients such as vitamin B12,[85] vitamin D,[86] calcium,[86][87] iodine[88] and omega-3 fatty acids.[89] These deficiencies have potentially serious consequences, including anemia,[90] rickets[91] and cretinism[92] in children, and osteomalacia[91] and hypothyroidism[92] in adults.
Deficiencies in Vitamin B12, a bacterial product that cannot be reliably found in plant foods,[90][93][94] can have serious health consequences, including anemia and neurodegenerative disease.[95] Although clinical B12 deficiency is rare in vegans,[90] if a person has not eaten more than the daily needed amount of B12 over a long period before becoming a vegan then they may not have built up any significant store of the vitamin.[96] In a 2002 laboratory study, more of the strict vegan participants' B12 and iron levels were compromised than those of lacto- or lacto-ovo-vegetarian participants.[97]
The Vegan Society and Vegan Outreach, among others, recommend that vegans either consistently eat foods fortified with B12 or take a B12 supplement.[98][99][100] Tempeh, seaweed, spirulina, organic produce, soil on unwashed vegetables, and intestinal bacteria have not been shown to be reliable sources of B12 for the dietary needs of vegans.[90][101][102]
It is recommended that vegans eat three servings per day of a high calcium food, such as fortified soy milk, and take a calcium supplement as necessary.[6][86] The EPIC-Oxford study showed that vegans have an increased risk of bone fractures over both meat eaters and vegetarians, likely due to lower dietary calcium intake, but that vegans consuming more than the UK's estimated average requirements for calcium of 525 mg/day had risk of bone fractures similar to other groups.[87][103] A study of bone density found that vegans have bones 6% less dense than omnivores but that this difference was "clinically insignificant".[104] Another study by the same researchers examined over 100 vegan post-menopausal women and found that “…although vegans have much lower intakes of dietary calcium and protein than omnivores, veganism does not have (an) adverse effect on bone mineral density (BMD) and does not alter body composition.”[105]
The authors of The China Study argue that osteoporosis is linked to the consumption of animal protein because animal protein, unlike plant protein, increases the acidity of blood and tissues which is then neutralized by calcium pulled from the bones.[106] The authors add that "in our rural China Study, where the animal to plant ratio [for protein] was about 10%, the fracture rate is only one-fifth that of the U.S."[107]
For light-skinned people, adequate amounts of vitamin D may also be obtained by spending 15 to 30 minutes in the sunlight every few days. Dark-skinned people need significantly more sunlight to obtain the same amount of vitamin D, and sunlight exposure may be difficult for vegans in areas with low levels of sunlight during winter; in these cases supplementation is recommended.[91][93][108]
Iodine supplementation may be necessary for vegans in countries where salt is not typically iodized, where it is iodized at low levels, or where, as in Britain or Ireland, animal products are used for iodine delivery.[88][98] Iodine can be obtained from most vegan multivitamins or from regular consumption of seaweeds, such as kelp.[88][98]
The American Dietetic Association considers well-planned vegan diets "appropriate for all stages of the life cycle, including pregnancy and lactation,"[6] but recommends that vegan mothers supplement for iron, vitamin D, and vitamin B12.[109][110] Vitamin B12 deficiency in lactating vegetarian mothers has been linked to deficiencies and neurological disorders in their children.[111][112] Some research suggests that the essential omega-3 fatty acid α-linolenic acid and its derivatives should also be supplemented in pregnant and lactating vegan mothers, since they are very low in most vegan diets, and the metabolically related docosahexaenoic acid (DHA) is essential to the developing visual system.[113] A maternal vegan diet has also been associated with low birth weight,[114] and a five times lower likelihood of having twins than those who eat animal products.[115]
Several cases of severe infant malnutrition and some fatalities have been associated with a poorly planned vegan diet,[116][117][118][119][120] and provoked criticism of vegan diets for children.[121][122] Parents involved in these cases were convicted on charges ranging from assault to felony murder. Addressing criticism of veganism, Dr. Amy Lanou, an expert witness for the prosecution in one of the cases, asserted that the child in that particular case "was not killed by a vegan diet" but that "the real problem was that he was not given enough food of any sort."[123]
The American Dietetic Association indicates that vegetarian diets may be more common among adolescents with eating disorders but that the evidence suggests that the adoption of a vegetarian diet does not lead to eating disorders, rather that "vegetarian diets may be selected to camouflage an existing eating disorder."[6] Other studies and statements by dietitians and counselors support this conclusion.[124][125][126]
People who adopt veganism for environmental reasons do so on the basis that veganism is claimed to consume far fewer resources and causes less environmental damage than an animal-based diet.[127][128][129] Animal agriculture is linked to climate change, water pollution, land degradation, and a decline in biodiversity.[129][130][131] Additionally, an animal-based diet uses more land,[131][132] water,[133] and energy than a vegan diet.[131][134][135]
The Livestock, Environment And Development Initiative, a joint effort of the World Bank, The European Union, The US Agency for International Development, the United Nations Food and Agriculture Organization and others, released a report in November 2006 linking animal agriculture to environmental damage. The report, Livestock's Long Shadow [136] concludes that the livestock sector (primarily cows, chickens, and pigs) emerges as one of the top two or three most significant contributors to our most serious environmental problems, at every scale from local to global. It is one of the largest sources of greenhouse gases - responsible for 18% of the world’s greenhouse gas emissions as measured in CO2 equivalents. In comparison, the proportion of total CO2 emissions by passenger vehicles is 12% of the total CO2.[137] It produces 65% of human-related nitrous oxide (which has 296 times the global warming potential of CO2) and 37% of all human-induced methane (which is 23 times as warming as CO2). Those numbers are confirmed in a 2007 article in the British medical journal The Lancet, which concludes that reducing consumption of animal products should be a top priority, especially in developed countries where such a measure would also entail substantial health benefits.[138]
A 2006 study by Gidon Eshel and Pamela Martin, assistant professors of geophysics at the University of Chicago, found that a person switching from the average American diet to a vegan diet would reduce CO2 emissions by 1,485 kg per year.[139]
The International Institute for Applied Systems Analysis argues that while most meat production in industrialized countries uses inefficient grain feeding methods through intensive farming, meat production is not invariably a poor use of land, especially in countries like China and Brazil. Since a proportion of all grain crops produced are not suitable for human consumption, they can be fed to animals to turn into meat, thus improving efficiency.[140][141] Further, greenhouse gas emissions are not limited to animal husbandry; but also to several plant based sources such as rice cultivation.[142][143]
In the developing world, notably Asia and Africa, fossil fuels are seldom used to transport feed for farm animals. Sheep or goats, for example, require no fuel, since they graze on farmlands, while bales of hay for bovines are still transported mainly using bullock carts or similar devices. Few of the meat processing techniques that occur in developed countries takes place in the majority of developing countries. Animals are also often herded to the place of slaughter (with the exception of poultry) resulting in a very low use of fossil fuels.[144] In fact farm animals in developing world are used for multiple purposes from providing draught power, to transportation while also serving as meat once it reaches the end of its economic life.
A 2007 study which simulated various diets' land use for the geography of New York State concluded that although vegetarian diets used the smallest amount of land per capita, a low fat diet which included some meat and dairy (less than 2 oz of meat/eggs per day—significantly less than consumed by the average American) could support slightly more people on the same available land than could be fed on some high fat vegetarian diets, since animal food crops can be grown on lower quality land than crops for human consumption.[145][146]
Diets such as raw veganism and fruitarianism are related to veganism, but have significant differences from standard veganism. There are also numerous religious groups that regularly or occasionally practice a similar diet, including adherents to some Buddhist traditions,[147] Hindus,[148] Sikhs,[149] Jains,[150] Eastern Orthodox Christians,[151][152] Rastafari,[153] and Seventh-day Adventists.[154]
The cuisines of most nations contain dishes suitable for a vegan diet, including ingredients such as tofu, tempeh and the wheat gluten-based product seitan in East Asian diets.[155][156][157][158] Many recipes that traditionally contain animal products can be adapted by substituting plant-based ingredients. For example, nut, grain or soy milks can be used to replace cow's milk[158][159] and eggs can be replaced by applesauce or commercial starch-based substitute products, depending upon the recipe.[158][159][160] Additionally, artificial "meat" products ("analogs" or "mock meats") made from non-animal derived ingredients such as soy or gluten including imitation sausages, ground beef, burgers, and chicken nuggets are widely available.[158][161]
| Country, city | Study design | Yeara | Age(years) | nb | … | Ve | … |
|---|---|---|---|---|---|---|---|
| Sweden (I)g | Telephone interview with school matrons. | 1996 | 16-20 | 67 370 | … | 0.1 | … |
| Sweden, Umeå (I)g | Telephone interview with school matrons. | 1996 | 16-20 | 3 450 | … | 2.1 | … |
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| Translations: Vegan |
Dansk (Danish)
n. - veganer (streng vegetar)
Français (French)
n. - végétalien
Deutsch (German)
n. - Veganer, strenger Vegetarier
Ελληνική (Greek)
n. - χορτοφάγος (εκ πεποιθήσεως)
Italiano (Italian)
vegetariano
Português (Portuguese)
n. - vegetariano que omite toda comida animal (m)
Русский (Russian)
строгий вегетарианец
Español (Spanish)
n. - vegetariano
中文(简体)(Chinese (Simplified))
素食主义者
中文(繁體)(Chinese (Traditional))
n. - 素食主義者
العربيه (Arabic)
(الاسم) نباتي
עברית (Hebrew)
n. - טבעוני, צמחוני
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