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 may be more important than how long they live. I personally think it should be around 240.