Post: Is it natural for humans to be more vegetarian?

Humans are naturally more suited to Vegetarian diets? Cloud unintentional http://songshuhui.net/archives/80399 rumors: by comparing the anatomical structure and physiological function of grass food animals, meat animals and people, it is concluded that "human structure is more suitable for vegetarian ". The reason is: 1. the teeth and jaw bones of a person are suitable for ground-up vegetarian food, rather than tearing meat; 2. the human saliva is weak alkaline and difficult to dissolve meat; 3. both humans and grass-fed animals have a long stomach and small intestine, which is suitable for slowly absorbing vegetarian food that is not easy to rot. However, meat-fed animals have a short stomach and can quickly digest meat and discharge it before the meat rot. However, the residue of meat may produce toxins in the human intestines. Truth: The comparison of physiological structures cannot conclude that human structures are more suitable for vegetarian diets. Some of the nutrients required by the human body are much more contained in plant foods, and some are much more contained in animal foods. Reasonable miscellaneous food recipes can achieve a convenient and effective nutritional balance. Pure vegetarian diet can also achieve a comprehensive balance of nutrition, but it is difficult. Human physiological structure is not more suitable for vegetarian food. First, according to the physiological structure, we cannot come up with the idea that "human is more suitable for vegetarian food. There are multiple actual "severe injuries" in the comparison ". Typical examples are: although the saliva of a person is not "strong acid", it is not "alkaline", but neutral and sour; the human gastric juice is usually below pH = 2, after eating, it is also difficult to reach the pH = 4 or above of the grazing animals. The ratio of Human Small intestine to height is significantly lower than that of the grazing animals. The conclusion based on incorrect facts is naturally unreliable. In fact, in terms of physiological structure, humans are neither grazing nor meat-eating animals, but miscellaneous animals, just like our close relatives in the animal world. It is unreasonable to choose one side between "meat" and "grass food" without adding miscellaneous animals for comparison. Secondly, although humans are essentially animals, people already have many different ways of life than other animals. For example, whether it is a grass-fed or a meat-fed animal, the main activity in their life is to feed and eat. Their food sources are "daily meals" and they do not have much control. In addition, they can only eat "Original Ecology" Food and will not choose, process, or deploy food. Humans, especially modern people, only need a little energy to get enough food, which can be processed in a variety of ways and provide nutrition-in other words, whether it is meat or vegetarian, what humans eat is a world different from what animals eat. It is difficult to tell whether humans should eat meat or vegetarian food by using natural grass food and meat. From the perspective of evolution and physiological structure, we have discussed whether humans should be vegetarian. Article . Interested readers can refer to "Is it really helpful for me to eat vegetarian food?" Scientific conclusions on vegetarian diet and health and longevity should be made to determine whether humans are more appropriate for vegetarian diet or whether to explore the impact of vegetarian diet on human health. The saying "vegetarian health and longevity" is widely spread and seems to be in line with people's intuitive feelings. In order to verify whether the statement is correct, scientists from countries such as the United States and the United States conducted several large-scale and long-term follow-up surveys. The results show that the average life expectancy of vegetarians is indeed higher than the average social level-the results certainly make vegetarians very happy. However, vegetarians also have other ways of life. For example, even fewer people smoke and drink in a vegetarian diet, even other aspects of life style, such as exercise and mentality, are "healthier ". There is ample scientific evidence that these "hybrid factors" contribute to long and healthy lives. To know the effect of vegetarian food on health and longevity, we need to eliminate these factors. It is difficult to conduct a random double-blind test, but a statistical tool can be used to return the survey data of large samples, removing the contribution of "mixed factors" to the results. The results showed that the vegetarian diet had no significant impact on health and longevity. That is to say, the reasons for the health and longevity of vegetarians are mainly the other aspects of their lifestyles, rather than the vegetarian diet itself. In theory, people can obtain almost all the nutrients they need from a vegetarian diet. However, some of the nutrients required by the human body are rich in animal foods, which are not common in plants. On the other hand, most plant foods provide a relatively simple set of nutrients. Protein is an extremely important nutrient, especially for minors in growth and development. The human body consumes protein to meet the needs of amino acids. In general, protein in eggs, milk, and meat is more similar to human needs in amino acid composition and is easy to digest, so it is called "high quality protein ". In common plant foods, only the protein in soybean is a high-quality protein, and other plant proteins alone have a low ability to meet the needs of human amino acids. Calcium, iron, and zinc are minerals that are easily lacking in vegetarians. In a general diet, the most convenient way to take calcium is dairy products, while iron and zinc are usually high in meat. If it is a non-Strict vegetarian who does not reject egg milk, the problem is not serious. If you are completely vegetarian, it is more troublesome. Beans contain a lot of calcium, iron and zinc, dark green vegetables contain more calcium and iron, whole grain products have more zinc beans contain more iron and zinc, whole grain products have more zinc. However, they are often entangled with other molecules such as metabin, which is less efficient to be absorbed by the human body. Vitamin B12 exists almost only in animal food, and it is difficult for a completely vegetarian to solve the problem through natural vegetarian diet. It is similar to folate, so it is not easy to detect when it is lacking. When the symptoms of vitamin B12 deficiency occur, it will be too late. Some plant foods "rich in vitamin B12" are listed in many promotional materials for vegetarian food promotion. However, they often come from legends and there is no reliable scientific evidence to prove that they can effectively provide vitamin B12. Human recipes include meat, eggs, milk, and other animal foods, which contain a large amount of nutrients required by the human body. However, many modern people eat too much food. The negative components, such as fat and cholesterol, have become "Healthy Killer ". Therefore, modern Dietary Guidelines advocate that people increase the proportion of vegetarian food in their diet. The American Association for Cancer Research claims that more than 2/3 of food comes from plants and helps reduce the risk of cancer. Another reason for vegetarianism is that it is conducive to the sustainable development of mankind. All human food needs to be produced by consuming water and converting solar energy on a certain land. To produce the same amount of food, the land and water required for a vegetarian diet is much lower than that for animal food. From this point of view, we should encourage you to increase the proportion of vegetarian food in recipes on the premise of comprehensive and balanced nutrition. Conclusion By comparing the physiological structure of human beings with grass and meat animals, it is proved that "human beings are more suitable for vegetarian diet", and the fact basis and demonstration methods are not reliable. Some nutrients required by the human body are much more contained in plant foods and some are much more contained in animal foods. Based on the modern science's understanding of human nutrition requirements, food composition analysis, and various food digestion and absorption processes, reasonable miscellaneous food recipes can achieve a convenient and effective nutritional balance. With Vitamin B12 supplementation, all nutrients may be obtained through vegetarian diet. However, considering that the average person often does not have sufficient professional knowledge, it is not easy to insist on carefully deploying food for a long time. It is difficult to achieve a "comprehensive balance of nutrition" through completely vegetarian food. This article is first published on guokr.com, the topic station of "rumor Crusher", "is human nature more suitable for vegetarian food?"