The life expectancy of people around the world has increased during the last 100 years. The technology change and the way that people live are the important reason. It is said that the development of the medical science make great responses. In 1900s, most of people around the world had suffered from fatal disease such as smallpox, malaria, and so on. Furthermore, the invention of penicillin has also change the world. It is such an efficient medicine that can cure most of the bacteria-caused disease. It even helped allies win the World War 2 against axis, which has no antibiotic to deal with the injuries. Moreover, the developed countries have more medical resources and better welfare policies
to take care of their citizens. People take more concerns on their health.
Among the developed countries, Japan is the most special one. Japanese have the longest life expectancy around the world – about 83 years old. The Japanese men have about 80.5 life span and Japanese women have about 86.83 life span. It is much higher than the average world life expectancy. Some studies show that the ways that Japanese eat causes them long-lived. Japanese food is less oil, less fat, and more healthy than American food like hamburgers and French fries. They also like to drink green tea, which contains lots of ingredient that is good for our body. The government does well on the health policy. In school, they teach their children some important knowledge of health. They also have good medical treatments and resources when they need. Therefore, it is not difficult to expect that Japanese have the longest life expectancy around the world.