The data seem to contradict research in the 1970s suggesting that in hard times there are more deaths from heart disease, cirrhosis, suicide and homicide, as well as more admissions to mental hospitals. But those findings have not been replicated, and several economists have pointed out flaws in the research.

In May 2000, the Quarterly Journal of Economics published a surprising paper called “Are Recessions Good for Your Health?” by Christopher J. Ruhm, professor of economics at the University of North Carolina, Greensboro, based on an analysis measuring death rates and health behavior against economic shifts and jobless rates from 1972 to 1991.

Dr. Ruhm found that death rates declined sharply in the 1974 and 1982 recessions, and increased in the economic recovery of the 1980s. An increase of one percentage point in state unemployment rates correlated with a 0.5 percentage point decline in the death rate  or about 5 fewer deaths per 100,000 people. Over all, the death rate fell by more than 8 percent in the 20-year period of mostly economic decline, led by drops in heart disease and car crashes.

The economic downturn did appear to take a toll on factors having less to do with prevention and more to do with mental well-being and access to health care. For instance, cancer deaths rose 23 percent, and deaths from flu and pneumonia increased slightly. Suicides rose 2 percent, homicides 12 percent.

The issue that may matter most in an economic crisis is not related to jobs or income, but whether the slump widens the gap between rich and poor, and whether there is an adequate health safety net available to those who have lost their jobs and insurance.

Image 2008 The rising cost of prepared foods in the United States is forcing people to cook from scratch. Credit... Steve Legato for The New York Times

During a decade of economic recession in Japan that began in the 1990s, people who were unemployed were twice as likely to be in poor health than those with secure jobs. During Peru’s severe economic crisis in the 1980s, infant mortality jumped 2.5 percentage points  about 17,000 more children who died as public health spending and social programs collapsed.