BeHereNow said:"The Great Depression had a silver lining: During that hard time, U.S. life expectancy increased by 6.2 years, researchers say.
Life expectancy rose from 57.1 in 1929 to 63.3 years in 1932, according to the analysis by U-M researchers Jos A. Tapia Granados and Ana Diez Roux. The increase occurred for both men and women, and for whites and non-whites.
"The finding is strong and counterintuitive," says Tapia Granados, the lead author of the study and a researcher at the Institute for Social Research. "Most people assume that periods of high unemployment are harmful to health."
For the study, researchers used historical life expectancy and mortality data to examine associations between economic growth and population health for 1920 to 1940. They found that while population health generally improved during the four years of the Great Depression and during recessions in 1921 and 1938, mortality increased and life expectancy declined during periods of strong economic expansion, such as 1923, 1926, 1929, and 1936-1937.
"
http://ur.umich.edu/0910/Oct05_09/19.php
So, in a span of 3 years, the life expectancy increased 6 years. Think about that statement.
They didn't mention that an reduced caloric intake reduces disease and increase longevity. The disease reduction was discovered by observation of Allied prisoners in Japanese prison camps. The longevity increase has been verified by numerous studies involving mice.
Childbirth mortality would have been a very important factor in life expectancy. Childbirth mortality rates were very high in the early 1900s. During the down times, poor to middle class people were less likely to have kids. Wealthier people, who had access to better health care, would have still had children. Less births by those without access to good healthcare equals lower childbirth mortality. Lower childbirth mortality equals greater life expectancy. See the first paragraph on the linked page below regarding childbirth mortality:
http://health.howstuffworks.com/pre...r-delivery/how-to-prepare-for-childbirth1.htm