Although eating meat is nutritious, eating too much meat will bring a series of threats to our health.

Harm of eating meat: 1. Eating too much meat will harm the heart and brain.

Scientific research found that early humans only ate fruits and vegetables, not meat. Until the post-ice age, the fruits, nuts and vegetables needed by human beings were not enough. In order to survive, they began to eat the meat of dead animals as a supplement. However, after the ice age, vegetarianism was abundant, but the habit of eating meat continued. In real life, there are many "carnivores" around us, such as hamburgers, barbecues, roast ducks and braised pork. According to the data of national nutrition survey in 2002, the daily intake of animal food for urban and rural residents in China is 248g and 126g respectively, while the standard given by China Nutrition Society is only 50g-75g per day.

In fact, in ancient China, eating meat was controversial. Lv Chunqiu: Pay attention to yourself pointed out that people who are good at keeping in good health are "not full of treasures" because "all treasures are filled with stomachs, and their stomachs are full of boredom, which is not enough". "Zhong Zhen" mainly refers to animal food, such as fish, birds and animals. The ancients thought that eating too much of these foods would dull the digestive function of the spleen and stomach and affect the smooth flow of qi and blood functions. Now more and more experiments prove that eating too much meat is very harmful to the human body: at least 1 10,000 new heart disease patients are found in the United States every year, and nearly 600,000 people are killed. According to the research report of the American Heart Disease Research Council, most of these heart patients eat too much meat, eat too little vegetables and exercise too little. In addition, eating more meat is closely related to metabolic diseases such as hyperlipidemia and obesity. Recently, the British Daily Mail even wrote that even seemingly unrelated diseases, such as arthritis, gallstones, Alzheimer's disease and osteoporosis, are related to eating more meat. When human beings become "carnivores", it will not only do harm to the body, but also make the dopamine secretion in the human brain exuberant and the acetylcholine activity abnormal, leading to bad temper and strong desire, which will affect intelligence.

2, eating more meat will be poisoned.

Because of the fear before being killed and the pain when being killed, the biochemical function in the body has changed greatly. Causing toxins to spread all over the body and poisoning the whole body. According to the Encyclopedia Britannica, toxins in the human body, including uric acid and other toxic excreta, will appear in blood and body tissues: "Compared with the 56% impure water contained in beef, protein obtained from nuts, beans and grains is obviously much purer."

Just as our bodies get sick in fear or anger, animals are no different from humans, and great chemical changes will take place in dangerous situations. The secretion of hormones in animals' blood, especially adrenaline, will be completely changed when other animals are lying beside them, struggling in vain to survive. This large amount of hormone remains in meat, is eaten by human beings, and then poisons human tissues. American nutritionists pointed out: "The meat of dead animals contains toxic blood and other excreta."

Eating too much meat will lead to cancer

Yu, president of National Taiwan University Hospital, said that we should eat less animal food, because animal food will increase the risk of cancer. A diet rich in animal food will prolong the childbearing age by 9 to 10 years, and the increase of childbearing age will increase the risk of breast cancer. "Daily intake of 15%~ 16% animal protein may start to cause cancer; Reducing the intake of protein in animals can greatly reduce the initiation of tumors. "

The results of a research report on 50,000 vegetarians caused a great shock in cancer research. The report pointed out that the low incidence of cancer in this group of people is quite surprising. Compared with the people of the same age and sex, the proportion of all kinds of cancers in this population is obviously reduced. Research reports show that they can obviously live longer. A report on Mormons in California pointed out that the incidence of cancer in this group is 50% less than that of the general population. Mormons are characterized by eating less meat

Why are meat eaters more likely to get cancer? One of the reasons may be that when an animal's meat is left for a few days, it will turn morbidly blue-gray. In order not to change their color, the butcher added nitrate, nitrite and other preservatives. These things make meat look bright red. But in recent years, it has been reported that these things contain carcinogens.

"I don't even need to feed my cat anything containing nitrate," said Dr. William Kim, a cancer expert at the National Oakland Laboratory in Tennessee.

British and American scientists compared the "intestinal microbes" of meat eaters and vegetarians and found obvious differences. When microorganisms contained in the intestines of meat eaters interact with digestive juice, the chemicals produced are considered to cause cancer. This may explain why intestinal cancer is very common in meat-based areas, such as North America and Western Europe, but rarely occurs in places where vegetables are the staple food, such as India. For example, in the United States, intestinal cancer is the second place (after lung cancer); Scots eat 20% more beef than British people, which is one of the countries with the highest incidence of intestinal cancer in the world.

About "What if I eat too much meat"—

How much meat is appropriate to eat every day? ：

Protein in meat can also be obtained by replacing milk and beans, but B vitamins, essential fatty acids and minerals such as zinc and iron are irreplaceable by vegetables and fruits. So, we don't need meat, but we don't need too much meat.

It is clearly pointed out in the Dietary Balance Pagoda that a person consumes 75 grams of lean meat every day, which is equivalent to a piece the size of a deck of playing cards. For vegetables, it is best to consume about 500 grams a day. "Unfortunately, many people now eat these two things backwards."

Meat is divided into red meat and white meat. Red meat refers to meat that is red before cooking, and all mammalian meat, such as pork, beef, mutton and rabbit meat, belongs to this category. White meat refers to meat with fine muscle fiber, low fat content and high unsaturated fatty acid content in fat, including poultry (chicken, duck, goose, turkey, etc. ), fish, reptiles, amphibians, crustaceans (shrimps and crabs, etc. ) or bivalves (oysters, clams, etc. ).

Manual workers are suitable for eating red meat, while mental workers eat more white meat; Men have a large demand for red meat, while women have a small demand for red meat, so they can eat more white meat; The physical function of the elderly is declining. Eating more red meat can easily lead to cardiovascular disease and Alzheimer's disease, so it is best to eat white meat. To meet the needs of physical development, children should eat these two kinds of meat. Yu Kang reminded that if you suffer from chronic diseases such as obesity, heart disease and high blood pressure, it is best to eat less meat and eat more beans, such as soybean milk and tofu. If you really want to eat, you must only eat lean meat to ensure nutrient supply and not aggravate chronic diseases.

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