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17. Health Gains in Developing Countries It can be seen from the chart that there have been dramatic changes in life expectancy and infant mortality in developing countries in the past decades. As the chart shows, peoples life expectancy soared from 40 years old to 60 years old from 1960 to 1990. Meanwhile, infant mortality declined from 200 to 150 deaths per thousand births. The change in the chart may be attributed to a number 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 17. Health Gains in Developing Countries It can be seen from the chart that there have been dramatic changes in life expectancy and infant mortality in developing countries in the past decades. As the chart shows, peoples life expectancy soared from 40 years old to 60 years old from 1960 to 1990. Meanwhile, infant mortality declined from 200 to 150 deaths per thousand births. The change in the chart may be attributed to a number 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 medical sciences and boom of medical industry provide citizens with more opportunities to cure their diseases. 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. | 
