On February 9th, 2005, 1 16-year-old Maria Esther heredia Capovilla presented the Guinness World Record Certificate to the oldest person in the world at her home in Guayaquil, Ecuador. 130 years old India found the oldest person in the world. 2. Ocean News According to the residents of Brown Village in Himachal Pradesh in northern India, the old lady Devji Devi living in this village is at least 130 years old. 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. Rio de Janeiro, June 15: It is said that Maria carmo geronimo, a Brazilian woman aged 129, died on June 14. According to church records about baptism, geronimo was born on March 5th, 187 1 year. But because there is no birth certificate, she is not recognized as the oldest woman in the world. Geronimo was born into a black slave family, when Brazil was still a monarchy. When she was 0/7 years old, Brazil had abolished slavery, but she never left her hometown and worked as a nanny for others for 60 years. 127 years old, she left home for the first time and saw the ocean. Brazil awarded her the title of the world's oldest person at a carnival parade in Rio de Janeiro to commemorate the abolition of slavery. Her owner, Argos Dinho Jumas, has been trying to get Guinness World Records to recognize her as the world's oldest woman in recent years, but without success. "They said that the church's baptism record is not enough, and there must be a birth certificate." Gumaras told reporters not long ago, "The problem is that there is no birth certificate, especially slaves." The oldest person is 14 1 year. . . An old man of 14 1 year was recently found in Malaysia. Malaysian authorities have applied to Guinness World Records to list him as the oldest person in the world. The old man's name is Omar, and he now lives in Manigambang Rilan, the capital of Terengganu, northeastern Malaysia. He has four children, 96 grandchildren and great-grandchildren, and the whole family has four generations under one roof. Omar can still do some housework at present. According to Malaysian records, Omar was born on September 26th, 1857, and is now 14 1 year old. Up to now, the Guinness Book of World Records recognized the oldest person in the world as Jean-Calmont, who died on August 4th at the age of 1997. 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.