It is said that places with less pollution are healthier. Why is the life expectancy in Shanghai and Beijing higher than that in Qinghai, Tibet?

The main factor that determines the average life expectancy in a region is the medical level. Of course, living environment, genetics and eating habits will all have an impact on life expectancy. You can find that Beijing is famous for its smog and there are environmental problems. Shanghai people can't live without sugar in their recipes, and there are problems with their living habits. However, in the ranking of life expectancy in all parts of the country, Shanghai ranks first and Beijing ranks second. And there is a big gap with the third place.

After careful analysis, we found that the top medical resources in China are concentrated in these two cities. Almost all incurable diseases in the country will not be willing to go to big hospitals in Beijing and Shanghai to find experts for examination and consultation. These megacities have gathered the first-class medical talents in China. They have mastered the most advanced medical technology and the most advanced diagnostic medical equipment. Early detection of diseases leads to early diagnosis. Coupled with advanced scientific medical means, the mortality rate has been reduced and delayed, and the average life expectancy has certainly increased.

In addition to medical care, I think the average education level and quality of life of citizens in these cities will also have an impact on the average life expectancy. The group with higher education level will be more scientific in diet, life and health preservation, and participate in fitness activities more actively. This may also be a reason for the increase in life expectancy.

Although the environmental pollution in Shanghai and Beijing is heavier than that in Qinghai, Tibet, the altitude is low. Shanghai and Beijing are located on the third step of China's terrain, only a few hundred meters above sea level, and the air is rich in oxygen. Tibet and Qinghai are located at the first level of China's topography, with an average elevation of three or four kilometers. High altitude and low oxygen content in the air are not good for people's health. Living in an anoxic environment for a long time will do harm to human health.

This is also an important factor in the low life expectancy in Qinghai, Tibet. At present, the supporting facilities of Shanghai and Beijing are complete, and all aspects are the top level in China. In particular, the medical level is one of the best in China. This has left Tibet and Qinghai far behind. If the altitude and medical conditions in Qinghai, Tibet are the same as those in Beijing and Shanghai, the average life expectancy will definitely be longer than those in these two places.

To sum up, besides the air quality, there is also the living environment that affects people's lives. Therefore, although there is little pollution in Qinghai, Tibet, the average life expectancy of people is much lower than that in Shanghai and Beijing because of its high altitude and limited medical level.