Who ever said bad economic recession? A recession is a good economic slump individuals, corporations and countries apart. But underneath there was a recession that lesson for people's health. One study showed an upward trend of health during the Great Depression (Great Depression) that hit the U.S. and the world in the years 1929 to 1932. Researchers from the University of Michigan found in the U.S. life expectancy increased during the 6 years during the Great Depression of the average age of 57 years to 63 years old female or male, white or colored. The death rate from illnesses, accidents and infant mortality declined sharply during the Great Depression. "This finding is contrary to the assumption many people that a recession with high unemployment harmful to health," said Jose Tapia Granados, researchers from the Institute for Social Research as quoted by Reuters on Tuesday (29/9/2009). These findings have been published on Monday, September 28 in the Proceedings of the National Academy of Sciences. The study also complements previous studies showing a correlation between economic collapse and improving the health of various countries. Which include research studies during the 1920-1940 period was also found that the health of residents increased during the four years during the Great Depression and during the recession that occurred in 1921 and 1938. But on the other hand, increased mortality and life expectancy is decreasing when the economy is experiencing major growth or expansion of such a strong event in 1923, 1926, 1929, and 1936-1937. The study did not find a reason why it happened. However, according to Tapia Granados it happened because the period of economic expansion has been associated with increasing numbers of people smoking and drinking, lack of sleep and stress levels higher jobs. "During the expansion, the company became very busy and the company usually requires a lot of employees from working overtime to claim more quickly. This can create stress and the employee acted with much drinking and smoking," said Tapia Granados. Economic expansion also makes traffic flow more crowded that stimulated a lot of death due to accident. Not to mention the number of work accidents is increasing as many companies as the economic expansion using labor inexperienced. Increased industrial production and the bustling traffic on the road has made air pollution increases. Tapia Granados said the study conducted shows that deaths from heart disease tend to increase sharply as more severe air pollution. Researchers found 5 of the 6 highest cause of death in the United States is relatively stable and tends to decline during the Great Depression. Except for cases of suicide deaths. This decrease in mortality rates during a recession because there has been little work to be done and the employees also work at a slower pace. "So there was more time to sleep, and because people have less money during the recession they are so dear to waste by buying alcohol and cigarettes," he said.