There are many factors to prolong human life, such as the continuous progress of medical means; Clever prevention and control measures of drought, locust plague and flood; A stable life brought by peace; Adequate food supply and so on. In addition, the improvement of human life concept, such as the progress of diet and lifestyle, has also greatly improved life expectancy.

The progress of medical means has the most direct impact on prolonging life. In the period of underdeveloped medical means, many common diseases, such as diabetes and tuberculosis, are considered incurable. With the progress of medical treatment, these diseases no longer threaten human life. The emergence of vaccines has also promoted the extension of life expectancy. Smallpox virus, rabies virus, etc., which have a high mortality rate, are all targeted vaccines, which greatly extend the life span of human beings.

Effective measures to prevent and control natural disasters have also extended life span. In the era of underdeveloped science and technology, the destruction caused by many natural disasters will have a serious impact on mankind. For example, drought and locust plague once displaced thousands of people, and countless people died of hunger, thirst and disease. In today's society, there are effective measures to deal with disasters, such as building reservoirs, building warehouses and storing food. The plague of locusts was carved from the roots decades ago, which is of great help to improve the life expectancy of our country.

The progress of life concept has also improved the life expectancy of our country. China's food culture is profound, but many ways of eating are unhealthy. Such as salty diet in the north, seafood cooking mistakes in coastal areas and so on. With the development of society, people pay more and more attention to health preservation and advocate diversified diet. Diet pyramid? . A healthy diet greatly reduces the incidence of human diseases and effectively prolongs human life.

It can be seen that the extension of life span is closely related to the progress of science and technology and thought. The average life expectancy of China people has reached 76.9 years, which is not easy. In life, we should also pay attention to health, develop healthy eating habits, observe our physical condition more, reduce the occurrence of our own diseases, and live a happy and healthy life.