Actually, for me, it's very touching.
I'm afraid of death.
I dare not think about what will happen when I die in the future. That uncomfortable feeling is really indescribable.
Whenever the night is still. I will think about what it will be like for me to die in the future, and I will feel particularly uncomfortable psychologically and physically.
But now think about it a little, no matter how long we can live, let's live well now. Anyway, people are dead, so I will realize everything I want to do in my life, eat, drink and be merry, and spend more time with my family with my dreams.
Now let's talk about physiology. I am a medical student. According to the medical field, the average life expectancy of people is 60 years old, but this is the average, including all kinds of deaths. As long as they are in good health, quit smoking and drinking, have a regular schedule and exercise regularly, the average life expectancy of these people can reach over 80 years old.
Therefore, having a good figure is the key.
How long can humans live?
In the next 80 years, mankind may face many global disasters. Among these possible disasters, the nearest one will appear on June 2, 20081day. [img] env.people/... 83.jpg [/img] [img] env.people/... 08.jpg [/img] According to foreign media reports, some scientists predict that in the next 80 years, mankind may face many global disasters. Among these possible disasters, the nearest one will appear on June 2, 20081day. At that time, an asteroid numbered HZ5 1 with a diameter of 800 meters will probably collide with the Earth. If this disaster really comes, mankind is likely to repeat the extinction of dinosaurs 65 million years ago. According to scientists' calculations, the probability of such a disaster is only about one in six million. However, since the orbit of an asteroid was accurately calculated not long ago, the probability of its collision with the Earth may change. By the end of 20 1 1, astronomers predict that solar activity will reach its peak. During this period, the work of electrical equipment and navigation instruments will be seriously affected, and people's mood will also change. At the same time, strong solar radiation will also lead to a significant increase in the incidence of skin cancer. The two peaks of solar activity are predicted to appear at 20110 and 20 12 respectively. Douglas Beseko of the Center for Space Phenomenon Research in Colorado, USA, pointed out: "We can only determine an approximate time period now, but within 6- 12 months, we will be able to give the exact time when the sun enters the peak of activity." After that, the sun may erupt more violently. Pierce Mayer of the European Space Agency pointed out that the temperature in the center of the sun has nearly doubled in the last 1 1 year. He warned that similar phenomena often occur in stars before supernova explosions. According to Pierce Meyer's speculation, the sun may explode violently in 20 13 years, causing an unprecedented disaster in human history. Once this happens, the temperature of the earth will rise sharply and eventually lead to a terrible ecological disaster. By 2020, the global climate will change significantly. At this time, Europe will be hit by frequent heavy rainfall and floods, which will cause heavy losses to local agriculture. The rest of the world will face a wide range of drought threats. For mankind (the global population is expected to reach 7.6 billion by 2020), an unprecedented food crisis is coming. Frederic Robery, a Swedish physicist, believes that by 2020, global oil production will decline-mainly because the main oil-producing areas are becoming increasingly exhausted. Soaring fuel prices will further hit the global economy. The possibility that major countries in the world compete for oil resources is not ruled out. By April 13, 2029, mankind will once again encounter threats from space. This time, the 99942 Apophis asteroid with a diameter of 400 meters will fly over 35,000 kilometers from the earth. Scientists believe that people will be able to see this asteroid with the naked eye. It is estimated that the probability of 99942 Apophis hitting the earth will reach one in 6000. This is a very high probability. Therefore, some people even proposed to set up a special foundation to formulate and implement a plan to intercept asteroids. By 2030, affected by global climate change, 20%-30% coral reefs will disappear. At this time, the global population ......
How long can people live?
What is the limit of human life? This is one of the topics that people are most concerned about, and scientists have been looking for answers. Although there are still few centenarians, the average life expectancy of human beings (especially in developed countries) has been extended in the past few decades. But how long can this trend last? Through the study of experimental animals, scientists have found that some methods, including limiting calorie intake, can significantly prolong their life. But can these methods be successfully applied to humans and how long can they prolong life? Some scientists believe that it can at least become a routine for human beings to live to 100 years old. However, even so, longevity will bring other troubles, such as social insurance. Roberds, chairman of the Ottawa Heart Research Center, said that scientists once thought that it might take 65,438,000 years for human life span to double. However, many research results convince scientists that this time will be greatly shortened. He believes that within 50 years, the average life expectancy of human beings will reach 150 years. According to the British "Guardian" report, Professor Walter Longo, a biomedical scientist at the University of Southern California who has been engaged in the study of human aging mechanism for a long time, found that the life span of transgenic yeast has been extended by six times! This experiment has created the highest record of prolonging the life of living things. Related research results were published in the world famous academic journal Cell. Yeast is a single-celled organism, which can completely explain the aging mechanism of cells. In the experiment, the researchers removed two core genes, Sir2 and SCH9, from yeast cells. Sir2 gene controls life span by inhibiting the whole genome; SCH9 gene mainly controls cells to convert nutrients into energy, and specifically informs cells whether there is enough food now. If organisms lack these two genes, cells will "think" that their food reserves are about to run out, and the main "energy" should be put on prolonging life instead of continuing to grow and reproduce. By inhibiting the normal work of Sir2 and SCH9 genes, the researchers successfully extended the life span of yeast from 1 week in the natural state to 6 weeks. Scientists have begun to do such experiments on mice. After removing these two key genes, the life span of experimental mice was significantly prolonged. If the average life expectancy of human beings is 70 years old, once the life expectancy can be extended by 6 times, can human beings not live beyond 400 years old? Now it is found that there is a substance called telomerase at the top of the chromosome of the cell. Every time a cell divides, telomeres shorten a little. When telomeres are finally too short to shorten, the life of cells is over. If the sequence of telomerase is reversed, won't the cell live forever? The achievements are as follows: (1) Using nanotechnology, the life span of mouse brain cells has been prolonged by 3-4 times; Using transgenic technology, the number of cell divisions of vascular endothelial cells has increased from 65 times to more than 200 times, breaking the "hayflick limit" (that is, the limit of cell divisions is 40-60 times). How long can we live? How many years can normal people live? Different scholars have different angles of investigation, and the years calculated by different methods are also different. According to the calculation method of cell division number and division period, human life span is the product of cell division number and division period. Since the embryonic period, cells have divided more than 50 times, with an average division cycle of 2.4 years, so it is estimated that the highest life expectancy of human beings is at least 120 years old. According to the calculation method of sexual maturity, the highest natural life expectancy of human beings should be 1 12- 150 years old. According to the calculation method of growth period, the natural life span of human beings is 100- 175 years. According to the calculation method of pregnancy, the maximum natural life span of a person can reach 167 years old. The calculation results of the above methods show that the normal natural life span of human beings should be above 100 years. With the improvement of human environmental sanitation and the improvement of public health quality, people's life expectancy is also constantly extending. In the bronze age 4,000 years ago, the average life expectancy of people was only 18 years old. During the 4800 years from the Bronze Age to 1900, the life expectancy of human beings is estimated to have increased by about 27 years. During the short 90 years from 1900 to 1990, the increase was at least that much. What determines human life span? At present, the scientific community has reached an understanding that human life span is mainly realized by internal and external factors. The internal cause is heredity, and the external cause is environment and living habits. The influence of heredity on longevity is more prominent in people who live long. Generally speaking, parents live longer and their children live longer. German scientists investigated 576 centenarians in 15 years and found that their parents died on average. ......
How long can the average person live?
Theoretically, you can live to 1 50 years old. The oldest surviving birthday girl: 1, 30 years old. India discovers the oldest person in the world (Ocean Forum on July 365, 438+0, 65, 438+00: 34, 2002). According to the residents of Brown Village in Himachal Pradesh, northern India, the old lady Dave Guidevi has lived in this village for at least 6,500 years. If her age can be confirmed, she will be the oldest person in the world, 14 years older than the oldest woman known in China. How long can we live? American scientists believe that even with the continuous progress of science, human life expectancy will hardly reach 100 years, at least in the next century. The average life expectancy of people born in this century is 85 years. Oleshansky, a professor of public health care at the University of Illinois at Chicago, said that there are no magic drugs, hormones, antioxidants, genetic engineering or biotechnology in the world today, which can increase the life span of human beings to 120 years or 150 years, as predicted by some people. Follick, an expert on longevity at the University of California, San Francisco, totally agrees with Oleshansky's point of view, saying that human beings are "super longevity" is simply "nonsense". But Oleshansky does not deny that there are some encouraging facts. He told the annual meeting of the American Association for the Development of Science in San Francisco that since 1900, the average life expectancy of human beings has increased by 30 years due to the improvement of medical standards. For example, the life expectancy of American girls born in 1900 is only 48.9 years, while that of girls born in 1995 is 79 years. Ole Shanski reported in the forthcoming issue of Science this week that it will take at least 200 years for French and Japanese-born babies to live to 1000. It will be 600 years before babies born in America can join this century-old club. The reason for this difference is that in these three countries, the rate of death rate decline is different. From 1985 to 1995, the mortality rate in France decreased by 1.5%, in Japan by 1.2%, and in the United States by only 0.4%. According to this data, the average life expectancy of French people will reach 85 years in 2033, Japan in 2035 and the United States in 2 182. According to records, the person who has lived the longest so far is a French woman named Calmet, who died on 1997 at the age of 122.45. The Queen of England is also one of the few examples of longevity. Professor Follick said that life expectancy and life expectancy are two concepts. Life span refers to how long a person can live; Life expectancy refers to the average life expectancy of people born in a certain year. The longest life span of human beings is about 125 years old. Even if the most common causes of death such as cancer, heart disease and stroke are excluded, the average life expectancy will increase by at most 15 years, and then people will die of old age. He believes that only when biological researchers find a way to delay the aging process and make this discovery serve all mankind will the next great leap in human life appear. Oleshansky said that the most realistic way at present is to study how to prolong the healthy period of human beings. Today, the health status of 65-year-old people is the same as that of 60-year-old people in 1960. For human beings, the quality of life is the most precious. Living in a building, there is a longevity village in Hubei, where there are many centenarians. Five cities live together. If you want to seek the secret of longevity, you might as well go there and read the following. Maybe you can find many experienced long-lived old people there, and maybe you can discover the mystery of human immortality. But I know you're not here to live forever. I can tell you, if you want to know this question, I'm afraid you'll have to run around. View from a height or a distance
How long can the average person live?
Theoretically, you can live to 1 50 years old. The oldest surviving birthday girl: 1, 30 years old. India discovers the oldest person in the world (Ocean Forum on July 365, 438+0, 65, 438+00: 34, 2002). According to the residents of Brown Village in Himachal Pradesh, northern India, the old lady Dave Guidevi has lived in this village for at least 6,500 years. If her age can be confirmed, she will be the oldest person in the world, 14 years older than the oldest woman known in China. How long can we live? American scientists believe that even with the continuous progress of science, human life expectancy will hardly reach 100 years, at least in the next century. The average life expectancy of people born in this century is 85 years. Oleshansky, a professor of public health care at the University of Illinois at Chicago, said that there are no magic drugs, hormones, antioxidants, genetic engineering or biotechnology in the world today, which can increase the life span of human beings to 120 years or 150 years, as predicted by some people. Follick, an expert on longevity at the University of California, San Francisco, totally agrees with Oleshansky's point of view, saying that human beings are "super longevity" is simply "nonsense". But Oleshansky does not deny that there are some encouraging facts. He told the annual meeting of the American Association for the Development of Science in San Francisco that since 1900, the average life expectancy of human beings has increased by 30 years due to the improvement of medical standards. For example, the life expectancy of American girls born in 1900 is only 48.9 years, while that of girls born in 1995 is 79 years. Ole Shanski reported in the forthcoming issue of Science this week that it will take at least 200 years for French and Japanese-born babies to live to 1000. It will be 600 years before babies born in America can join this century-old club. The reason for this difference is that in these three countries, the rate of death rate decline is different. From 1985 to 1995, the mortality rate in France decreased by 1.5%, in Japan by 1.2%, and in the United States by only 0.4%. According to this data, the average life expectancy of French people will reach 85 years in 2033, Japan in 2035 and the United States in 2 182. According to records, the person who has lived the longest so far is a French woman named Calmet, who died on 1997 at the age of 122.45. The Queen of England is also one of the few examples of longevity. Professor Follick said that life expectancy and life expectancy are two concepts. Life span refers to how long a person can live; Life expectancy refers to the average life expectancy of people born in a certain year. The longest life span of human beings is about 125 years old. Even if the most common causes of death such as cancer, heart disease and stroke are excluded, the average life expectancy will increase by at most 15 years, and then people will die of old age. He believes that only when biological researchers find a way to delay the aging process and make this discovery serve all mankind will the next great leap in human life appear. How long can we live? How many years can normal people live? Different scholars have different angles of investigation, and the years calculated by different methods are also different. According to the calculation method of cell division number and division period, human life span is the product of cell division number and division period. Since the embryonic period, cells have divided more than 50 times, with an average division cycle of 2.4 years, so it is estimated that the highest life expectancy of human beings is at least 120 years old. According to the calculation method of sexual maturity, the highest natural life expectancy of human beings should be 1 12- 150 years old. According to the calculation method of growth period, the natural life span of human beings is 100- 175 years. According to the calculation method of pregnancy, the maximum natural life span of a person can reach 167 years old. The calculation results of the above methods show that the normal natural life span of human beings should be above 100 years. With the improvement of human environmental sanitation and the improvement of public health quality, people's life expectancy is also constantly extending. In the bronze age 4,000 years ago, the average life expectancy of people was only 18 years old. During the 4800 years from the Bronze Age to 1900, the life expectancy of human beings is estimated to have increased by about 27 years. During the short 90 years from 1900 to 1990, the increase was at least that much. What determines human life span? The scientific community has reached a consensus that people's life span is mainly realized by internal and external factors. The internal cause is heredity, and the external cause is environment and living habits. The influence of heredity on longevity is more prominent in people who live long. Generally speaking, parents who live long live longer for their children. ......
How long can humans survive?
Great prophecy (reproduced)
20 17 12, Chengdu meteorological bureau recorded a high temperature of 50 degrees.
On March 20 18, Sichuan Wolong Giant Panda Breeding Center announced that the wild giant pandas had completely disappeared.
On April 20 18, Japan's autonomy in China declared the Japanese archipelago a thing of the past and Japan disintegrated. A week later, China announced that Taiwan Province Province was renamed as Taiwan Province Island Province.
2065438+In July 2008, the British Isles disappeared.
In March 2020, the Yangtze River and the Yellow River were cut off.
In April 2020, the snow in the Himalayas melted, killing 25 million people.
In July 2022, the first batch of wheat was produced in the Siberian plain.
In 2023, during the war, radiation-infected people died on a large scale.
On June 5438+ 10, 2024, the United Nations population report announced that the global human population had dropped to 2.5 billion, of which 15% was abnormal.
In July 2030, the United Nations published a survey report on urban development and human civilization, and found that 40% of the cities in the world were barren, 20% were almost uninhabited, and the per capita living standard dropped to 1960. In addition, the report also pointed out that the number of existing scientists and all highly educated personnel is not enough to promote the re-development of human civilization, and there is a phenomenon of civilization retrogression. The global dropout rate of normal children is 60%, with 420 million people, including 65.438+300 million orphans.
203 1 by 2034, the global desert area will account for 30% of the land.
From 2035 to 2040, high-knowledge talents before the war died one after another, and mankind faced the situation of civilization collapse. The population dropped to 2.06 billion. Abnormal human beings account for 30% of all mankind.
In 2043, the United Nations published a report on the development of human science and technology, pointing out that before human science and technology regressed to 1945, a large number of factories and high-tech facilities were abandoned and high-tech products were seriously lost.
In March 2044, the United Nations published the World Energy Survey Report, pointing out that more than 89% of the oil fields in the Middle East have been exhausted. Two weeks later, the Organization of Petroleum Exporting Countries unanimously agreed to suspend all oil trade, which triggered the collapse of the world economy, inflation and the depreciation of the US dollar. The dollar fell to a hundred-year low against gold, reaching $68 million per ounce, and the World Bank went bankrupt.
In May 2044, the religious crisis broke out and the Holy See collapsed for more than a thousand years. Human beings have fundamentally changed their religious thoughts and pursued materialism.
In April 2045, due to energy shortage, countries around the world announced the suspension of all civil aviation services and restricted people from owning private cars.
In July 2046, all natural gas fields in China were exhausted.
In September, 2046, the first Symposium on Human Civilization and Future was held in Washington, Xinhua, with a duration of 10 days. The meeting didn't produce any results.
65438, 2047 10 to July, a food crisis broke out in Europe, and a total of * * * 30 million people starved to death. The European Union unanimously adopted the grain and oil rationing system, and all crops were treated by * * *. Each family of four can get half a kilogram of flour, 300 grams of salt, 200 ml of oil and 300 grams of sugar every week.
In September 2047, the food crisis spread all over the world, and countries implemented grain and oil rationing system.
In August, 2048, the third United Nations population report announced that the global population was only 65.438+500 million 65.438+00000.
In 2048 10, the United Nations held an emergency meeting to find ways to stop the rapid population decline.
June 5438+October 2049 10, the international space station abandoned for 30 years crashed into the western Pacific.
In March 2049, the United States retired the space shuttle that had been closed for more than 20 years, and mankind lost the last tool to board space, marking the end of the short space age of mankind.
From June, 5438 to October, 2050/KLOC-0, the United Nations published the Report on Social Situation, pointing out that 60% of the world's regions are free of * * *, leaving only more than 20 countries on the earth.
In March, 20051year, American scientists found that 70% of men on the earth had a low rate of * * *, and only 0.03% of them were healthy, and 60% of them were abnormal human beings.
In April 2052, the disrepair Golden Gate Bridge collapsed, and in August of the same year, the new World Trade Center in new york collapsed. From then on, humans can no longer build such a huge building.
In June 2053, the famous Dead Sea dried up.
In July 2053, Israel and Palestine merged to form the United States of Israel and Palestine. .
In 2054, the United Nations published the Fourth World Population Report. The population of major countries in the world is 6.5438+0.3252 million in China, 654.38+0.4/kloc-0.20 million in the United States, 26 million in Russia and 2.65438+0 million in India.
In July 2055, Chinese and American scientists discovered that there were ......