The blood vessels in the kidney are very thin, which will lead to a sharp increase in blood pressure in the blood vessels in the kidney after cold contraction.
Relatively speaking, it will increase the blood pressure on the glomerulus. Over time, the glomerulus will explode for you.
Who says milk is not for people to drink?
In 2005, Dr. Lin Guangchang, consultant of Taiwan Province Cancer Foundation, published Why I Oppose Drinking Milk in Newspapers. Since then, he has frequently appeared in public places and the media to promote his "harmful theory of milk". Milk, which is evaluated as "the closest food to perfection" by medical nutritionists, is "for cows" in Dr. Lin's view, which makes people hesitate for a while and make it difficult to choose. As a dairy worker, I would like to refute several viewpoints of Dr. Lin Guangchang in a responsible attitude towards china dairy and consumers.
Dr. Lin Guangchang's opinion 1: Too much protein can hurt people.
"protein important is not important, very important. A moderate amount of protein is very good for your health, while an excessive amount of protein will kill you. More than 80% of all diseases of modern civilization are related to protein's excessive intake. "
Refutation: protein's excessive harm is indeed worrying.
To maintain life, people need to rely on 42 nutrients. Protein, like vitamins, is one of the important nutrients to maintain people's life and health. If a person is seriously short of protein or the daily intake of protein is far from enough, he will feel weak and tired. Physical fitness will be weaker day by day, and even affect normal life and work. As for the source of protein, before the popularization of milk, protein was the main plant. Protein content in milk is usually 2.9%-3.3%, while protein content in eggs, meat and beans is between 10%-20%. Comparatively speaking, the content of protein in milk is not high. But its quality is the best, because milk protein contains 8 kinds of amino acids necessary for human body, which cannot be synthesized by human body itself. These amino acids are completely protein and can only be obtained from food.
I think Dr. Lin's opinion about whether excessive intake of protein is harmful is alarmist. Because the human body's demand for protein is just like the human body needs to replenish water every day, there is a basic index for the amount of protein that everyone needs every day. As long as the intake reaches this target, the human body will use the nitrogen balance to repel the excess protein, and finally excrete it through urination or other ways and channels. Different from fat, sugar and other nutrients, protein in milk will accumulate in the body after entering the human body, thus making the human body obese. Milk protein will not accumulate in the human body, nor will it cause the problem of "derivation". Looking at developed countries or countries with a tradition of drinking milk, the nutritional intake of teenagers in these countries is basically commensurate with the needs of physical development. So far, there is no definite report that protein's excessive intake will lead to health damage. Moreover, it took only 10 years to popularize drinking milk in China. In 2004, China's per capita milk consumption was only about18kg, which was far from the world's per capita milk consumption100kg. There is no scientific basis for saying that China people have taken protein excessively from milk.
Dr Lin Guangchang's second opinion: The chief culprit of skin allergy is milk.
"When I went back to Taiwan Province Province last year, my sister's child was only 4 months old and she was very allergic. I told her not to drink milk! As a result, it was half better the next day. I explained to her that many children are allergic. I've seen it all over the world. I scratch every day. It itches to death! I said don't drink milk, don't eat eggs, it's as simple as that. "
Refutation: Modern medicine tells us that a person's illness is related to his physical health or immune ability. Diseases caused by eating spoiled and polluted food do occur from time to time, but the possibility of direct diseases caused by eating or drinking certain foods (such as milk) is very low. People are allergic to skin, and the sources, channels and ways of sensitization are various. Some people are allergic to some irritating smells (such as essence), some people are allergic to pets, flowers and birds, and some people are allergic to seafood, aquatic products (such as shrimps and crabs) or fruits (such as pineapples). Most people who are allergic to milk are babies. At this time, it is not allergy, but intolerance, and the incidence rate is usually not too high, usually around 3%-7%. In adults, the probability of skin allergy caused by drinking milk is low, generally less than one in ten thousand. Everyone is forbidden to drink milk only because very few babies are intolerant of milk. This practice is indeed biased. Xu Chuncong, an attending physician in pediatrics at Dongshan District People's Hospital in Guangzhou, gave a good evaluation: "If only a few percent of babies have milk intolerance and other children are not allowed to drink milk, it is as absurd as asking everyone not to eat because someone choked to death."
Lin Guangchang's third point: The more milk you drink, the more calcium you lack.
"Now the milk contains a lot of protein, protein will produce a lot of acidic substances when it is metabolized in the body, so that the constitution will be sour, and it is easy to get sick when the constitution is sour. Calcium is an alkaline substance. The more milk you drink, the more sour your body is and the more calcium you lose. Drinking milk is like a big funnel of calcium loss. As long as you drink milk, the calcium in your body will never be enough. If you want osteoporosis, please drink more milk. "
Refutation: According to scientific tests, the calcium in milk is very rich and high, and it is easily absorbed by the human body, and the absorption rate is almost above 98%. It is one of the best sources of calcium in nature. Whether the human body is osteoporosis depends not only on the lack of calcium source in the diet, but also on the ability of the human body to absorb and maintain calcium. This absorption and retention ability is closely related to people's age and endocrine, that is, the content of sex hormones. Furthermore, according to the food textbooks we use now, milk is classified as alkaline food, and of course some scholars classify it as neutral food. Whether neutral or alkaline, protein, which is not very high in content, can make the whole human body seriously acidic, which is hard to convince and unscientific. Regarding the effect of milk on human body, Professor Hong Zhaoguang, a famous health education expert in China, gave a special speech entitled "Healthy and Happy 100" to the doctors attending the 16th Great Wall International Cardiology Conference held not long ago. In his speech, he thought that if people want to live to the age of 100, they should drink more milk besides good temperament. He said that drinking milk is not just a "patent" for children. Middle-aged people drink milk, which has slow arteriosclerosis and low incidence of hypertension. On the issue of health care. He especially called on us to learn from the pilot of Shenzhou VI. We should drink milk three times a day, milk in the morning and evening, and yogurt at noon. Americans and Europeans have been drinking milk for hundreds of years or more. If we reason from Dr. Lin's point of view, people in these countries should have osteoporosis long ago. Dr. Lin advocates that people wean as soon as possible. In my opinion, it is best for people to stay with milk all their lives.
The debate about the influence of milk nutrition and intake on human health is not just raised. In fact, as early as 1940s and 1950s, this dispute was discussed internationally. The reason is that some people in the world think that the cardiovascular diseases suffered by westerners are related to their intake of a large number of dairy products. Later, the International Dairy Federation (idf) and the medical profession organized more than 300 experts, which lasted for 10 years, and conducted a comprehensive evaluation of the impact of milk nutrition on human health. As a result, although more than 300 experts who participated in the evaluation failed to reach a complete agreement, more than 95% of the experts affirmed the value of milk and denied the statement that milk would endanger human health. Dr. Lin Guangchang put forward the view against drinking milk. If it is from the perspective of academic research, it is no harm for everyone to discuss it in depth. But the problem is that there are many things in his speech that can't stand scrutiny or lack of theoretical basis. He takes these imprecise things out to educate others, which is a bit irresponsible to the health of society and others.