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The Evolution of a Myth
Author notes and references= http://www.westonaprice.org/abcs-of-nutrition/267-myths-of-vegetarianism
Along with the unjustified and unscientific saturated fat and cholesterol scares of the past several decades has come the notion that vegetarianism is a healthier dietary option for people. It seems as if every health expert and government health agency is urging people to eat fewer animal products and consume more vegetables, grains, fruits and legumes. Along with these exhortations have come assertions and studies supposedly proving that vegetarianism is healthier for people and that meat consumption is associated with sickness and death. Several authorities, however, have questioned these data, but their objections have been largely ignored.
As we shall see, many of the vegetarian claims cannot be substantiated and some are simply false and dangerous. There are benefits to vegetarian diets for certain health conditions, and some people function better on less fat and protein, but, as a practitioner who has dealt with several former vegetarians and vegans (total vegetarians), I know full well the dangerous effects of a diet devoid of healthful animal products. It is my hope that all readers will more carefully evaluate their position on vegetarianism after reading this paper.
Myth #1: Meat consumption contributes to famine and depletes the Earth's natural resources.
Myth #2: Vitamin B12 can be obtained from plant sources.
Myth #3: Our needs for vitamin D can be met by sunlight.
Myth #4: The body's needs for vitamin A can be entirely obtained from plant foods.
Myth #5: Meat-eating causes osteoporosis, kidney disease, heart disease, and cancer.
Myth #6: Saturated fats and dietary cholesterol cause heart disease, atherosclerosis, and/or cancer, and low-fat, low-cholesterol diets are healthier for people.
Myth #7: Vegetarians live longer and have more energy and endurance than meat-eaters.
Myth #8: The "cave man" diet was low-fat and/or vegetarian. Humans evolved as vegetarians.
Myth #9: Meat and saturated fat consumption have increased in the 20th century, with a corresponding increase in heart disease and cancer.
Myth #10: Soy products are adequate substitutes for meat and dairy products.
Myth #11: The human body is not designed for meat consumption.
Myth #12: Eating animal flesh causes violent, aggressive behavior in humans.
Myth #13: Animal products contain numerous, harmful toxins.
Myth #14: Eating meat or animal products is less "spiritual" than eating only plant foods.
Myth #15: Eating animal foods is inhumane.
Myth #1: Meat consumption contributes to famine and depletes the Earth's natural resources.
Some vegetarians have claimed that livestock require pasturage that could be used to farm grains to feed starving people in Third World countries. It is also claimed that feeding animals contributes to world hunger because livestock are eating foods that could go to feed humans. The solution to world hunger, therefore, is for people to become vegetarians. These arguments are illogical and simplistic.
The first argument ignores the fact that about 2/3 of our Earth's dry land is unsuitable for farming. It is primarily the open range, desert and mountainous areas that provide food to grazing animals and that land is currently being put to good use (1).
The second argument is faulty as well because it ignores the vital contributions that livestock animals make to humanity's well-being. It is also misleading to think that the foods grown and given to feed livestock could be diverted to feed humans:
Agricultural animals have always made a major contribution to the welfare of human societies by providing food, shelter, fuel, fertilizer and other products and services. They are a renewable resource, and utilize another renewable resource, plants, to produce these products and services. In addition, the manure produced by the animals helps improve soil fertility and, thus, aids the plants. In some developing countries the manure cannot be utilized as a fertilizer but is dried as a source of fuel.
There are many who feel that because the world population is growing at a faster rate than is the food supply, we are becoming less and less able to afford animal foods because feeding plant products to animals is an inefficient use of potential human food. It is true that it is more efficient for humans to eat plant products directly rather than to allow animals to convert them to human food. At best, animals only produce one pound or less of human food for each three pounds of plants eaten. However, this inefficiency only applies to those plants and plant products that the human can utilize. The fact is that over two-thirds of the feed fed to animals consists of substances that are either undesirable or completely unsuited for human food. Thus, by their ability to convert inedible plant materials to human food, animals not only do not compete with the human rather they aid greatly in improving both the quantity and the quality of the diets of human societies. (2)
Furthermore, at the present time, there is more than enough food grown in the world to feed all people on the planet. The problem is widespread poverty making it impossible for the starving poor to afford it. In a comprehensive report, the Population Reference Bureau attributed the world hunger problem to poverty, not meat-eating (3). It also did not consider mass vegetarianism to be a solution for world hunger.
What would actually happen, however, if animal husbandry were abandoned in favor of mass agriculture, brought about by humanity turning towards vegetarianism?
If a large number of people switched to vegetarianism, the demand for meat in the United States and Europe would fall, the supply of grain would dramatically increase, but the buying power of poor [starving] people in Africa and Asia wouldn't change at all.
The result would be very predictable -- there would be a mass exodus from farming. Whereas today the total amount of grains produced could feed 10 billion people, the total amount of grain grown in this post-meat world would likely fall back to about 7 or 8 billion. The trend of farmers selling their land to developers and others would accelerate quickly. (4)
In other words, there would be less food available for the world to eat. Furthermore, the monoculture of grains and legumes, which is what would happen if animal husbandry were abandoned and the world relied exclusively on plant foods for its food, would rapidly deplete the soil and require the heavy use of artificial fertilizers, one ton of which requires ten tons of crude oil to produce (5).
As far as the impact to our environment, a closer look reveals the great damage that exclusive and mass farming would do. British organic dairy farmer and researcher Mark Purdey wisely points out that if "veganic agricultural systems were to gain a foothold on the soil, then agrochemical use, soil erosion, cash cropping, prairie-scapes and ill health would escalate." (6)
Neanderthin author Ray Audette concurs with this view:
Since ancient times, the most destructive factor in the degradation of the environment has been monoculture agriculture. The production of wheat in ancient Sumeria transformed once-fertile plains into salt flats that remain sterile 5,000 years later. As well as depleting both the soil and water sources, monoculture agriculture also produces environmental damage by altering the delicate balance of natural ecosystems. World rice production in 1993, for instance, caused 155 million cases of malaria by providing breeding grounds for mosquitoes in the paddies. Human contact with ducks in the same rice paddies resulted in 500 million cases of influenza during the same year.(7)
There is little doubt, though, that commercial farming methods, whether of plants or animals produce harm to the environment. With the heavy use of agrochemicals, pesticides, artificial fertilizers, hormones, steroids, and antibiotics common in modern agriculture, a better way of integrating animal husbandry with agriculture needs to be found. A possible solution might be a return to "mixed farming," described below.
The educated consumer and the enlightened farmer together can bring about a return of the mixed farm, where cultivation of fruits, vegetables and grains is combined with the raising of livestock and fowl in a manner that is efficient, economical and environmentally friendly. For example, chickens running free in garden areas eat insect pests, while providing high-quality eggs; sheep grazing in orchards obviate the need for herbicides; and cows grazing in woodlands and other marginal areas provide rich, pure milk, making these lands economically viable for the farmer. It is not animal cultivation that leads to hunger and famine, but unwise agricultural practices and monopolistic distribution systems. (8)
The "mixed farm" is also healthier for the soil, which will yield more crops if managed according to traditional guidelines. Mark Purdey has accurately pointed out that a crop field on a mixed farm will yield up to five harvests a year, while a "mono-cropped" one will only yield one or two (9). Which farm is producing more food for the world's peoples? Purdey well sums up the ecological horrors of "battery farming" and points to future solutions by saying:
Our agricultural establishments could do very well to outlaw the business-besotted farmers running intensive livestock units, battery systems and beef-burger bureaucracies; with all their wastages, deplorable cruelty, anti-ozone slurry systems; drug/chemical induced immunotoxicity resulting in B.S.E. [see myth # 13] and salmonella, rain forest eradication, etc. Our future direction must strike the happy, healthy medium of mixed farms, resurrecting the old traditional extensive system as a basic framework, then bolstering up productivity to present day demands by incorporating a more updated application of biological science into farming systems. (10)
It does not appear, then, that livestock farming, when properly practiced, damages the environment. Nor does it appear that world vegetarianism or exclusively relying on agriculture to supply the world with food are feasible or ecologically wise ideas.
Myth #2: Vitamin B12 can be obtained from plant sources.
Of all the myths, this is perhaps the most dangerous. While lacto and lacto-ovo vegetarians have sources of vitamin B12 in their diets (from dairy products and eggs), vegans (total vegetarians) do not. Vegans who do not supplement their diet with vitamin B12 will eventually get anemia (a fatal condition) as well as severe nervous and digestive system damage; most, if not all, vegans have impaired B12 metabolism and every study of vegan groups has demonstrated low vitamin B12 concentrations in the majority of individuals (11). Several studies have been done documenting B12 deficiencies in vegan children, often with dire consequences (12). Additionally, claims are made in vegan and vegetarian literature that B12 is present in certain algae, tempeh (a fermented soy product) and Brewer's yeast. All of them are false as vitamin B12 is only found in animal foods. Brewer's and nutritional yeasts do not contain B12 naturally; they are always fortified from an outside source.
There is not real B12 in plant sources but B12 analogues--they are similar to true B12, but not exactly the same and because of this they are not bioavailable (13). It should be noted here that these B12 analogues can impair absorption of true vitamin B12 in the body due to competitive absorption, placing vegans and vegetarians who consume lots of soy, algae, and yeast at a greater risk for a deficiency (14).
Some vegetarian authorities claim that B12 is produced by certain fermenting bacteria in the lower intestines. This may be true, but it is in a form unusable by the body. B12 requires intrinsic factor from the stomach for proper absorption in the ileum. Since the bacterial product does not have intrinsic factor bound to it, it cannot be absorbed (15).
It is true that Hindu vegans living in certain parts of India do not suffer from vitamin B12 deficiency. This has led some to conclude that plant foods do provide this vitamin. This conclusion, however, is erroneous as many small insects, their feces, eggs, larvae and/or residue, are left on the plant foods these people consume, due to non-use of pesticides and inefficient cleaning methods. This is how these people obtain their vitamin B12. This contention is borne out by the fact that when vegan Indian Hindus later migrated to England, they came down with megaloblastic anaemia within a few years. In England, the food supply is cleaner, and insect residues are completely removed from plant foods (16).
The only reliable and absorbable sources of vitamin B12 are animal products, especially organ meats and eggs (17). Though present in lesser amounts than meat and eggs, dairy products do contain B12. Vegans, therefore, should consider adding dairy products into their diets. If dairy cannot be tolerated, eggs, preferably from free-run hens, are a virtual necessity.
That vitamin B12 can only be obtained from animal foods is one of the strongest arguments against veganism being a "natural" way of human eating. Today, vegans can avoid anemia by taking supplemental vitamins or fortified foods. If those same people had lived just a few decades ago, when these products were unavailable, they would have died.
Myth #3: Our needs for vitamin D can be met by sunlight.
Though not really a vegetarian myth per se, it is widely believed that one's vitamin D needs can be met simply by exposing one's skin to the sun's rays for 15-20 minutes a few times a week. Concerns about vitamin D deficiencies in vegetarians and vegans always exist as this nutrient, in its full-complex form, is only found in animal fats (18) which vegans do not consume and more moderate vegetarians only consume in limited quantities due to their meatless diets.
It is true that a limited number of plant foods such as alfalfa, sunflower seeds, and avocado, contain the plant form of vitamin D (ergocalciferol, or vitamin D2). Although D2 can be used to prevent and treat the vitamin D deficiency disease, rickets, in humans, it is questionable, though, whether this form is as effective as animal-derived vitamin D3 (cholecalciferol). Some studies have shown that D2 is not utilized as well as D3 in animals (19) and clinicians have reported disappointing results using vitamin D2 to treat vitamin D-related conditions (20).
Although vitamin D can be created by our bodies by the action of sunlight on our skin, it is very difficult to obtain an optimal amount of vitamin D by a brief foray into the sun. There are three ultraviolet bands of radiation that come from sunlight named A, B, and C. Only the "B" form is capable of catalyzing the conversion of cholesterol to vitamin D in our bodies (21) and UV-B rays are only present at certain times of day, at certain latitudes, and at certain times of the year (22). Furthermore, depending on one's skin color, obtaining 200-400 IUs of vitamin D from the sun can take as long as two full hours of continual sunning (23). A dark-skinned vegan, therefore, will find it impossible to obtain optimal vitamin D intake by sunning himself for 20 minutes a few times a week, even if sunning occurs during those limited times of the day and year when UV-B rays are available.
The current RDA for vitamin D is 400 IUs, but Dr. Weston Price's seminal research into healthy native adult people's diets showed that their daily intake of vitamin D (from animal foods) was about 10 times that amount, or 4,000 IUs (24). Accordingly, Dr. Price placed a great emphasis on vitamin D in the diet. Without vitamin D, for example, it is impossible to utilize minerals like calcium, phosphorous, and magnesium. Recent research has confirmed Dr. Price's higher recommendations for vitamin D for adults (24).
Since rickets and/or low vitamin D levels has been well-documented in many vegetarians and vegans (26), since animal fats are either lacking or deficient in vegetarian diets (as well as those of the general Western public who routinely try to cut their animal fat intake), since sunlight is only a source of vitamin D at certain times and at certain latitudes, and since current dietary recommendations for vitamin D are too low, this emphasizes the need to have reliable and abundant sources of this nutrient in our daily diets. Good sources include cod liver oil, lard from pigs that were exposed to sunlight, shrimp, wild salmon, sardines, butter, full-fat dairy products, and eggs from properly fed chickens.
Myth #4: The body's needs for vitamin A can be entirely obtained from plant foods.
True vitamin A, or retinol and its associated esters, is only found in animal fats and organs like liver (27). Plants do contain beta-carotene, a substance that the body can convert into vitamin A if certain conditions are present (see below). Beta-carotene, however, is not vitamin A. It is typical for vegans and vegetarians (as well as most popular nutrition writers) to say that plant foods like carrots and spinach contain vitamin A and that beta-carotene is just as good as vitamin A. These things are not true even though beta-carotene is an important nutritional factor for humans.
The conversion from carotene to vitamin A in the intestines can only take place in the presence of bile salts. This means that fat must be eaten with the carotenes to stimulate bile secretion. Additionally, infants and people with hypothyroidism, gall bladder problems or diabetes (altogether, a significant portion of the population) either cannot make the conversion, or do so very poorly. Lastly, the body's conversion from carotene to vitamin A is not very efficient: it takes roughly 6 units of carotene to make one unit of vitamin A. What this means is that a sweet potato (containing about 25,000 units of beta-carotene) will only convert into about 4,000 units of vitamin A (assuming you ate it with fat, are not diabetic, are not an infant, and do not have a thyroid or gall bladder problem) [28].
Relying on plant sources for vitamin A, then, is not a very wise idea. This provides yet another reason to include animal foods and fats in our diets. Butter and full-fat dairy foods, especially from pastured cows, are good vitamin A sources, as is cod liver oil. Vitamin A is all-important in our diets, for it enables the body to use proteins and minerals, insures proper vision, enhances the immune system, enables reproduction, and fights infections (29). As with vitamin D, Dr. Price found that the diets of healthy primitive peoples supplied substantial amounts of vitamin A, again emphasizing the great need humans have for this nutrient in maintaining optimal health now and for future generations.
Myth #5: Meat-eating causes osteoporosis, kidney disease, heart disease, and cancer.
Oftentimes, vegans and vegetarians will try to scare people into avoiding animal foods and fats by claiming that vegetarian diets offer protection from certain chronic diseases like the ones listed above. Such claims, however, are hard to reconcile with historical and anthropological facts. All of the diseases mentioned are primarily 20th century occurrences, yet people have been eating meat and animal fat for many thousands of years. Further, as Dr. Price's research showed, there were/are several native peoples around the world (the Innuit, Maasai, Swiss, etc.) whose traditional diets were/are very rich in animal products, but who nevertheless did/do not suffer from the above-mentioned maladies (30). Dr. George Mann's independent studies of the Maasai done many years after Dr. Price, confirmed the fact that the Maasai, despite being almost exclusive meat eaters, nevertheless, had little to no incidence of heart disease, or other chronic ailments (31). This proves that other factors besides animal foods are at work in causing these diseases.
Several studies have supposedly shown that meat consumption is the cause of various illnesses, but such studies, honestly evaluated, show no such thing as the following discussion will show.
Osteoporosis
Dr. Herta Spencer's research on protein intake and bone loss clearly showed that protein consumption in the form of real meat has no impact on bone density. Studies that supposedly proved that excessive protein consumption equaled more bone loss were not done with real meat but with fractionated protein powders and isolated amino acids (32). Recent studies have also shown that increased animal protein intake contributes to stronger bone density in men and women (33). Some recent studies on vegan and vegetarian diets, however, have shown them to predispose women to osteoporosis (34).
Kidney Disease
Although protein-restricted diets are helpful for people with kidney disease, there is no proof that eating meat causes it (35). Vegetarians will also typically claim that animal protein causes overly acidic conditions in the blood, resulting in calcium leaching from the bones and, hence, a greater tendency to form kidney stones. This opinion is false, however. Theoretically, the sulphur and phosphorous in meat can form an acid when placed in water, but that does not mean that is what happens in the body. Actually, meat contains complete proteins and vitamin D (if the skin and fat are eaten), both of which help maintain pH balance in the bloodstream. Furthermore, if one eats a diet that includes enough magnesium and vitamin B6, and restricts refined sugars, one has little to fear from kidney stones, whether one eats meat or not (36). Animal foods like beef, pork, fish, and lamb are good sources of magnesium and B6 as any food/nutrient table will show.
Heart Disease
The belief that animal protein contributes to heart disease is a popular one that has no foundation in nutritional science. Outside of questionable studies, there is little data to support the idea that meat-eating leads to heart disease. For example, the French have one of the highest per capita consumption of meat, yet have low rates of heart disease. In Greece, meat consumption is higher than average but rates of heart disease are low there as well. Finally, in Spain, an increase in meat eating (in conjunction with a reduction in sugar and high carbohydrate intake) led to a decrease in heart disease (37).
Cancer
The belief that meat, in particular red meat, contributes to cancer is, like heart disease, a popular idea that is not supported by the facts. Although it is true that some studies have shown a connection between meat eating and some types of cancer (38), its important to look at the studies carefully to determine what kind of meat is being discussed, as well as the preparation methods used. Since we only have one word for "meat" in English, it is often difficult to know which "meat" is under discussion in a study unless the authors of the study specifically say so.
The study which began the meat=cancer theory was done by Dr. Ernst Wynder in the 1970s. Wynder claimed that there was a direct, causal connection between animal fat intake and incidence of colon cancer (39). Actually, his data on "animal fats" were really on vegetable fats (40). In other words, the meat=cancer theory is based on a phony study.
If one looks closely at the research, however, one quickly sees that it is processed meats like cold cuts and sausages that are usually implicated in cancer causation (41) and not meat per se. Furthermore, cooking methods seem to play a part in whether or not a meat becomes carcinogenic (42). In other words, it is the added chemicals to the meat and the chosen cooking method that are at fault and not the meat itself.
In the end, although sometimes a connection between meat and cancer is found, the actual mechanism of how it happens has eluded scientists (43). This means that it is likely that other factors besides meat are playing roles in some cases of cancer. Remember: studies of meat-eating traditional peoples show that they have very little incidence of cancer. This demonstrates that other factors are at work when cancer appears in a modern meat-eating person. It is not scientifically fair to single out one dietary factor in placing blame, while ignoring other more likely candidates.
It should be noted here that Seventh Day Adventists are often studied in population analyses to prove that a vegetarian diet is healthier and is associated with a lower risk for cancer (but see a later paragraph in this section). While it is true that most members of this Christian denomination do not eat meat, they also do not smoke or drink alcohol, coffee or tea, all of which are likely factors in promoting cancer (44).
The Mormons are a religious group often overlooked in vegetarian studies. Although their Church urges moderation, Mormons do not abstain from meat. As with the Adventists, Mormons also avoid tobacco, alcohol, and caffeine. Despite being meat eaters, a study of Utah Mormons showed they had a 22% lower rate for cancer in general and a 34% lower mortality for colon cancer than the US average (45). A study of Puerto Ricans, who eat large amounts of fatty pork, nevertheless revealed very low rates of colon and breast cancer (46). Similar results can be adduced to demonstrate that meat and animal fat consumption do not correlate with cancer (47). Obviously, other factors are at work.
Author notes and references= http://www.westonaprice.org/abcs-of-nutrition/267-myths-of-vegetarianism
Along with the unjustified and unscientific saturated fat and cholesterol scares of the past several decades has come the notion that vegetarianism is a healthier dietary option for people. It seems as if every health expert and government health agency is urging people to eat fewer animal products and consume more vegetables, grains, fruits and legumes. Along with these exhortations have come assertions and studies supposedly proving that vegetarianism is healthier for people and that meat consumption is associated with sickness and death. Several authorities, however, have questioned these data, but their objections have been largely ignored.
As we shall see, many of the vegetarian claims cannot be substantiated and some are simply false and dangerous. There are benefits to vegetarian diets for certain health conditions, and some people function better on less fat and protein, but, as a practitioner who has dealt with several former vegetarians and vegans (total vegetarians), I know full well the dangerous effects of a diet devoid of healthful animal products. It is my hope that all readers will more carefully evaluate their position on vegetarianism after reading this paper.
Myth #1: Meat consumption contributes to famine and depletes the Earth's natural resources.
Myth #2: Vitamin B12 can be obtained from plant sources.
Myth #3: Our needs for vitamin D can be met by sunlight.
Myth #4: The body's needs for vitamin A can be entirely obtained from plant foods.
Myth #5: Meat-eating causes osteoporosis, kidney disease, heart disease, and cancer.
Myth #6: Saturated fats and dietary cholesterol cause heart disease, atherosclerosis, and/or cancer, and low-fat, low-cholesterol diets are healthier for people.
Myth #7: Vegetarians live longer and have more energy and endurance than meat-eaters.
Myth #8: The "cave man" diet was low-fat and/or vegetarian. Humans evolved as vegetarians.
Myth #9: Meat and saturated fat consumption have increased in the 20th century, with a corresponding increase in heart disease and cancer.
Myth #10: Soy products are adequate substitutes for meat and dairy products.
Myth #11: The human body is not designed for meat consumption.
Myth #12: Eating animal flesh causes violent, aggressive behavior in humans.
Myth #13: Animal products contain numerous, harmful toxins.
Myth #14: Eating meat or animal products is less "spiritual" than eating only plant foods.
Myth #15: Eating animal foods is inhumane.
Myth #1: Meat consumption contributes to famine and depletes the Earth's natural resources.
Some vegetarians have claimed that livestock require pasturage that could be used to farm grains to feed starving people in Third World countries. It is also claimed that feeding animals contributes to world hunger because livestock are eating foods that could go to feed humans. The solution to world hunger, therefore, is for people to become vegetarians. These arguments are illogical and simplistic.
The first argument ignores the fact that about 2/3 of our Earth's dry land is unsuitable for farming. It is primarily the open range, desert and mountainous areas that provide food to grazing animals and that land is currently being put to good use (1).
The second argument is faulty as well because it ignores the vital contributions that livestock animals make to humanity's well-being. It is also misleading to think that the foods grown and given to feed livestock could be diverted to feed humans:
Agricultural animals have always made a major contribution to the welfare of human societies by providing food, shelter, fuel, fertilizer and other products and services. They are a renewable resource, and utilize another renewable resource, plants, to produce these products and services. In addition, the manure produced by the animals helps improve soil fertility and, thus, aids the plants. In some developing countries the manure cannot be utilized as a fertilizer but is dried as a source of fuel.
There are many who feel that because the world population is growing at a faster rate than is the food supply, we are becoming less and less able to afford animal foods because feeding plant products to animals is an inefficient use of potential human food. It is true that it is more efficient for humans to eat plant products directly rather than to allow animals to convert them to human food. At best, animals only produce one pound or less of human food for each three pounds of plants eaten. However, this inefficiency only applies to those plants and plant products that the human can utilize. The fact is that over two-thirds of the feed fed to animals consists of substances that are either undesirable or completely unsuited for human food. Thus, by their ability to convert inedible plant materials to human food, animals not only do not compete with the human rather they aid greatly in improving both the quantity and the quality of the diets of human societies. (2)
Furthermore, at the present time, there is more than enough food grown in the world to feed all people on the planet. The problem is widespread poverty making it impossible for the starving poor to afford it. In a comprehensive report, the Population Reference Bureau attributed the world hunger problem to poverty, not meat-eating (3). It also did not consider mass vegetarianism to be a solution for world hunger.
What would actually happen, however, if animal husbandry were abandoned in favor of mass agriculture, brought about by humanity turning towards vegetarianism?
If a large number of people switched to vegetarianism, the demand for meat in the United States and Europe would fall, the supply of grain would dramatically increase, but the buying power of poor [starving] people in Africa and Asia wouldn't change at all.
The result would be very predictable -- there would be a mass exodus from farming. Whereas today the total amount of grains produced could feed 10 billion people, the total amount of grain grown in this post-meat world would likely fall back to about 7 or 8 billion. The trend of farmers selling their land to developers and others would accelerate quickly. (4)
In other words, there would be less food available for the world to eat. Furthermore, the monoculture of grains and legumes, which is what would happen if animal husbandry were abandoned and the world relied exclusively on plant foods for its food, would rapidly deplete the soil and require the heavy use of artificial fertilizers, one ton of which requires ten tons of crude oil to produce (5).
As far as the impact to our environment, a closer look reveals the great damage that exclusive and mass farming would do. British organic dairy farmer and researcher Mark Purdey wisely points out that if "veganic agricultural systems were to gain a foothold on the soil, then agrochemical use, soil erosion, cash cropping, prairie-scapes and ill health would escalate." (6)
Neanderthin author Ray Audette concurs with this view:
Since ancient times, the most destructive factor in the degradation of the environment has been monoculture agriculture. The production of wheat in ancient Sumeria transformed once-fertile plains into salt flats that remain sterile 5,000 years later. As well as depleting both the soil and water sources, monoculture agriculture also produces environmental damage by altering the delicate balance of natural ecosystems. World rice production in 1993, for instance, caused 155 million cases of malaria by providing breeding grounds for mosquitoes in the paddies. Human contact with ducks in the same rice paddies resulted in 500 million cases of influenza during the same year.(7)
There is little doubt, though, that commercial farming methods, whether of plants or animals produce harm to the environment. With the heavy use of agrochemicals, pesticides, artificial fertilizers, hormones, steroids, and antibiotics common in modern agriculture, a better way of integrating animal husbandry with agriculture needs to be found. A possible solution might be a return to "mixed farming," described below.
The educated consumer and the enlightened farmer together can bring about a return of the mixed farm, where cultivation of fruits, vegetables and grains is combined with the raising of livestock and fowl in a manner that is efficient, economical and environmentally friendly. For example, chickens running free in garden areas eat insect pests, while providing high-quality eggs; sheep grazing in orchards obviate the need for herbicides; and cows grazing in woodlands and other marginal areas provide rich, pure milk, making these lands economically viable for the farmer. It is not animal cultivation that leads to hunger and famine, but unwise agricultural practices and monopolistic distribution systems. (8)
The "mixed farm" is also healthier for the soil, which will yield more crops if managed according to traditional guidelines. Mark Purdey has accurately pointed out that a crop field on a mixed farm will yield up to five harvests a year, while a "mono-cropped" one will only yield one or two (9). Which farm is producing more food for the world's peoples? Purdey well sums up the ecological horrors of "battery farming" and points to future solutions by saying:
Our agricultural establishments could do very well to outlaw the business-besotted farmers running intensive livestock units, battery systems and beef-burger bureaucracies; with all their wastages, deplorable cruelty, anti-ozone slurry systems; drug/chemical induced immunotoxicity resulting in B.S.E. [see myth # 13] and salmonella, rain forest eradication, etc. Our future direction must strike the happy, healthy medium of mixed farms, resurrecting the old traditional extensive system as a basic framework, then bolstering up productivity to present day demands by incorporating a more updated application of biological science into farming systems. (10)
It does not appear, then, that livestock farming, when properly practiced, damages the environment. Nor does it appear that world vegetarianism or exclusively relying on agriculture to supply the world with food are feasible or ecologically wise ideas.
Myth #2: Vitamin B12 can be obtained from plant sources.
Of all the myths, this is perhaps the most dangerous. While lacto and lacto-ovo vegetarians have sources of vitamin B12 in their diets (from dairy products and eggs), vegans (total vegetarians) do not. Vegans who do not supplement their diet with vitamin B12 will eventually get anemia (a fatal condition) as well as severe nervous and digestive system damage; most, if not all, vegans have impaired B12 metabolism and every study of vegan groups has demonstrated low vitamin B12 concentrations in the majority of individuals (11). Several studies have been done documenting B12 deficiencies in vegan children, often with dire consequences (12). Additionally, claims are made in vegan and vegetarian literature that B12 is present in certain algae, tempeh (a fermented soy product) and Brewer's yeast. All of them are false as vitamin B12 is only found in animal foods. Brewer's and nutritional yeasts do not contain B12 naturally; they are always fortified from an outside source.
There is not real B12 in plant sources but B12 analogues--they are similar to true B12, but not exactly the same and because of this they are not bioavailable (13). It should be noted here that these B12 analogues can impair absorption of true vitamin B12 in the body due to competitive absorption, placing vegans and vegetarians who consume lots of soy, algae, and yeast at a greater risk for a deficiency (14).
Some vegetarian authorities claim that B12 is produced by certain fermenting bacteria in the lower intestines. This may be true, but it is in a form unusable by the body. B12 requires intrinsic factor from the stomach for proper absorption in the ileum. Since the bacterial product does not have intrinsic factor bound to it, it cannot be absorbed (15).
It is true that Hindu vegans living in certain parts of India do not suffer from vitamin B12 deficiency. This has led some to conclude that plant foods do provide this vitamin. This conclusion, however, is erroneous as many small insects, their feces, eggs, larvae and/or residue, are left on the plant foods these people consume, due to non-use of pesticides and inefficient cleaning methods. This is how these people obtain their vitamin B12. This contention is borne out by the fact that when vegan Indian Hindus later migrated to England, they came down with megaloblastic anaemia within a few years. In England, the food supply is cleaner, and insect residues are completely removed from plant foods (16).
The only reliable and absorbable sources of vitamin B12 are animal products, especially organ meats and eggs (17). Though present in lesser amounts than meat and eggs, dairy products do contain B12. Vegans, therefore, should consider adding dairy products into their diets. If dairy cannot be tolerated, eggs, preferably from free-run hens, are a virtual necessity.
That vitamin B12 can only be obtained from animal foods is one of the strongest arguments against veganism being a "natural" way of human eating. Today, vegans can avoid anemia by taking supplemental vitamins or fortified foods. If those same people had lived just a few decades ago, when these products were unavailable, they would have died.
Myth #3: Our needs for vitamin D can be met by sunlight.
Though not really a vegetarian myth per se, it is widely believed that one's vitamin D needs can be met simply by exposing one's skin to the sun's rays for 15-20 minutes a few times a week. Concerns about vitamin D deficiencies in vegetarians and vegans always exist as this nutrient, in its full-complex form, is only found in animal fats (18) which vegans do not consume and more moderate vegetarians only consume in limited quantities due to their meatless diets.
It is true that a limited number of plant foods such as alfalfa, sunflower seeds, and avocado, contain the plant form of vitamin D (ergocalciferol, or vitamin D2). Although D2 can be used to prevent and treat the vitamin D deficiency disease, rickets, in humans, it is questionable, though, whether this form is as effective as animal-derived vitamin D3 (cholecalciferol). Some studies have shown that D2 is not utilized as well as D3 in animals (19) and clinicians have reported disappointing results using vitamin D2 to treat vitamin D-related conditions (20).
Although vitamin D can be created by our bodies by the action of sunlight on our skin, it is very difficult to obtain an optimal amount of vitamin D by a brief foray into the sun. There are three ultraviolet bands of radiation that come from sunlight named A, B, and C. Only the "B" form is capable of catalyzing the conversion of cholesterol to vitamin D in our bodies (21) and UV-B rays are only present at certain times of day, at certain latitudes, and at certain times of the year (22). Furthermore, depending on one's skin color, obtaining 200-400 IUs of vitamin D from the sun can take as long as two full hours of continual sunning (23). A dark-skinned vegan, therefore, will find it impossible to obtain optimal vitamin D intake by sunning himself for 20 minutes a few times a week, even if sunning occurs during those limited times of the day and year when UV-B rays are available.
The current RDA for vitamin D is 400 IUs, but Dr. Weston Price's seminal research into healthy native adult people's diets showed that their daily intake of vitamin D (from animal foods) was about 10 times that amount, or 4,000 IUs (24). Accordingly, Dr. Price placed a great emphasis on vitamin D in the diet. Without vitamin D, for example, it is impossible to utilize minerals like calcium, phosphorous, and magnesium. Recent research has confirmed Dr. Price's higher recommendations for vitamin D for adults (24).
Since rickets and/or low vitamin D levels has been well-documented in many vegetarians and vegans (26), since animal fats are either lacking or deficient in vegetarian diets (as well as those of the general Western public who routinely try to cut their animal fat intake), since sunlight is only a source of vitamin D at certain times and at certain latitudes, and since current dietary recommendations for vitamin D are too low, this emphasizes the need to have reliable and abundant sources of this nutrient in our daily diets. Good sources include cod liver oil, lard from pigs that were exposed to sunlight, shrimp, wild salmon, sardines, butter, full-fat dairy products, and eggs from properly fed chickens.
Myth #4: The body's needs for vitamin A can be entirely obtained from plant foods.
True vitamin A, or retinol and its associated esters, is only found in animal fats and organs like liver (27). Plants do contain beta-carotene, a substance that the body can convert into vitamin A if certain conditions are present (see below). Beta-carotene, however, is not vitamin A. It is typical for vegans and vegetarians (as well as most popular nutrition writers) to say that plant foods like carrots and spinach contain vitamin A and that beta-carotene is just as good as vitamin A. These things are not true even though beta-carotene is an important nutritional factor for humans.
The conversion from carotene to vitamin A in the intestines can only take place in the presence of bile salts. This means that fat must be eaten with the carotenes to stimulate bile secretion. Additionally, infants and people with hypothyroidism, gall bladder problems or diabetes (altogether, a significant portion of the population) either cannot make the conversion, or do so very poorly. Lastly, the body's conversion from carotene to vitamin A is not very efficient: it takes roughly 6 units of carotene to make one unit of vitamin A. What this means is that a sweet potato (containing about 25,000 units of beta-carotene) will only convert into about 4,000 units of vitamin A (assuming you ate it with fat, are not diabetic, are not an infant, and do not have a thyroid or gall bladder problem) [28].
Relying on plant sources for vitamin A, then, is not a very wise idea. This provides yet another reason to include animal foods and fats in our diets. Butter and full-fat dairy foods, especially from pastured cows, are good vitamin A sources, as is cod liver oil. Vitamin A is all-important in our diets, for it enables the body to use proteins and minerals, insures proper vision, enhances the immune system, enables reproduction, and fights infections (29). As with vitamin D, Dr. Price found that the diets of healthy primitive peoples supplied substantial amounts of vitamin A, again emphasizing the great need humans have for this nutrient in maintaining optimal health now and for future generations.
Myth #5: Meat-eating causes osteoporosis, kidney disease, heart disease, and cancer.
Oftentimes, vegans and vegetarians will try to scare people into avoiding animal foods and fats by claiming that vegetarian diets offer protection from certain chronic diseases like the ones listed above. Such claims, however, are hard to reconcile with historical and anthropological facts. All of the diseases mentioned are primarily 20th century occurrences, yet people have been eating meat and animal fat for many thousands of years. Further, as Dr. Price's research showed, there were/are several native peoples around the world (the Innuit, Maasai, Swiss, etc.) whose traditional diets were/are very rich in animal products, but who nevertheless did/do not suffer from the above-mentioned maladies (30). Dr. George Mann's independent studies of the Maasai done many years after Dr. Price, confirmed the fact that the Maasai, despite being almost exclusive meat eaters, nevertheless, had little to no incidence of heart disease, or other chronic ailments (31). This proves that other factors besides animal foods are at work in causing these diseases.
Several studies have supposedly shown that meat consumption is the cause of various illnesses, but such studies, honestly evaluated, show no such thing as the following discussion will show.
Osteoporosis
Dr. Herta Spencer's research on protein intake and bone loss clearly showed that protein consumption in the form of real meat has no impact on bone density. Studies that supposedly proved that excessive protein consumption equaled more bone loss were not done with real meat but with fractionated protein powders and isolated amino acids (32). Recent studies have also shown that increased animal protein intake contributes to stronger bone density in men and women (33). Some recent studies on vegan and vegetarian diets, however, have shown them to predispose women to osteoporosis (34).
Kidney Disease
Although protein-restricted diets are helpful for people with kidney disease, there is no proof that eating meat causes it (35). Vegetarians will also typically claim that animal protein causes overly acidic conditions in the blood, resulting in calcium leaching from the bones and, hence, a greater tendency to form kidney stones. This opinion is false, however. Theoretically, the sulphur and phosphorous in meat can form an acid when placed in water, but that does not mean that is what happens in the body. Actually, meat contains complete proteins and vitamin D (if the skin and fat are eaten), both of which help maintain pH balance in the bloodstream. Furthermore, if one eats a diet that includes enough magnesium and vitamin B6, and restricts refined sugars, one has little to fear from kidney stones, whether one eats meat or not (36). Animal foods like beef, pork, fish, and lamb are good sources of magnesium and B6 as any food/nutrient table will show.
Heart Disease
The belief that animal protein contributes to heart disease is a popular one that has no foundation in nutritional science. Outside of questionable studies, there is little data to support the idea that meat-eating leads to heart disease. For example, the French have one of the highest per capita consumption of meat, yet have low rates of heart disease. In Greece, meat consumption is higher than average but rates of heart disease are low there as well. Finally, in Spain, an increase in meat eating (in conjunction with a reduction in sugar and high carbohydrate intake) led to a decrease in heart disease (37).
Cancer
The belief that meat, in particular red meat, contributes to cancer is, like heart disease, a popular idea that is not supported by the facts. Although it is true that some studies have shown a connection between meat eating and some types of cancer (38), its important to look at the studies carefully to determine what kind of meat is being discussed, as well as the preparation methods used. Since we only have one word for "meat" in English, it is often difficult to know which "meat" is under discussion in a study unless the authors of the study specifically say so.
The study which began the meat=cancer theory was done by Dr. Ernst Wynder in the 1970s. Wynder claimed that there was a direct, causal connection between animal fat intake and incidence of colon cancer (39). Actually, his data on "animal fats" were really on vegetable fats (40). In other words, the meat=cancer theory is based on a phony study.
If one looks closely at the research, however, one quickly sees that it is processed meats like cold cuts and sausages that are usually implicated in cancer causation (41) and not meat per se. Furthermore, cooking methods seem to play a part in whether or not a meat becomes carcinogenic (42). In other words, it is the added chemicals to the meat and the chosen cooking method that are at fault and not the meat itself.
In the end, although sometimes a connection between meat and cancer is found, the actual mechanism of how it happens has eluded scientists (43). This means that it is likely that other factors besides meat are playing roles in some cases of cancer. Remember: studies of meat-eating traditional peoples show that they have very little incidence of cancer. This demonstrates that other factors are at work when cancer appears in a modern meat-eating person. It is not scientifically fair to single out one dietary factor in placing blame, while ignoring other more likely candidates.
It should be noted here that Seventh Day Adventists are often studied in population analyses to prove that a vegetarian diet is healthier and is associated with a lower risk for cancer (but see a later paragraph in this section). While it is true that most members of this Christian denomination do not eat meat, they also do not smoke or drink alcohol, coffee or tea, all of which are likely factors in promoting cancer (44).
The Mormons are a religious group often overlooked in vegetarian studies. Although their Church urges moderation, Mormons do not abstain from meat. As with the Adventists, Mormons also avoid tobacco, alcohol, and caffeine. Despite being meat eaters, a study of Utah Mormons showed they had a 22% lower rate for cancer in general and a 34% lower mortality for colon cancer than the US average (45). A study of Puerto Ricans, who eat large amounts of fatty pork, nevertheless revealed very low rates of colon and breast cancer (46). Similar results can be adduced to demonstrate that meat and animal fat consumption do not correlate with cancer (47). Obviously, other factors are at work.
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