It can be seen from the charts that there havebeen dramatic changes in life expectancy and infantmortality in developing countries in the pastdecades. As the chart shows, people's lifeexpectancy soared from 40 years old to 60 years oldfrom 1960 to 1990. Meanwhile, infant mortalitydeclined from 200 to 150 deaths per thousandbirths.
The changes in the charts may be attributed to anumber of factors, but the following are the most critical ones. First, developing countries'economy has been developing at a considerably high speed in the past decades. Therefore,people have more extra money to improve their health. Secondly, the advances in medicalsciences and boom of medical industry provide citizens with more opportunities to cure theirdiseases. Last but not least, people have attached greater importance to their quality of life,thus they have spent more money and time to build up their bodies.
In a word, these charts are perfect indexes of developing nations' fast expanding economyand people's rising standard of life. Although a series of problems have arisen in the process, itis reasonable for us to believe that they can be solved in the near future with effectivemeasures taken by both the government and the public.
(或If this trend continues, developing countries will soon approach the developed countriesin terms of health care. People will live longer and healthier lives. The result of this will be happierand more productive populations.)