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Member Research & Reports

Member Research & Reports

Michigan Research: Life Expectancy Not Declining as Rapidly as Once Thought but Health Inequality Has Worsened

While previous findings of dramatic decreases in life expectancy for some socioeconomically disadvantaged groups in the United States have been overstated, health inequalities persist and, in fact, have worsened, according to new research from the University of Michigan.

Arline T. Geronimus
[Photo: Dr. Dr. Arline Geronimus]

“Although the alarm generated by the dramatic findings of earlier studies was likely exaggerated, our more modest and relative findings are both more plausible and still disturbing,” said Dr. Arline Geronimus, professor of health behavior and health education at the U-M School of Public Health and author of a paper appearing in the current issue of Health Affairs.

“This entrenchment or growth in health disparities is particularly disturbing as it occurred over a time period when reducing and eliminating health disparities has been an explicit and high priority U.S. national public health policy objective.”

The research team wanted to look at the question of mortality among various socioeconomic groups following highly publicized research in recent years stating that life expectancy declines dramatically among non-Hispanic whites with less than a high school education.

“Substantial drops in life expectancy are unprecedented in developed countries outside of periods of large-scale war or fundamental political upheaval,” said Dr. Geronimus, explaining why she and colleagues questioned the earlier findings.

Since the number of people earning degrees has steadily increased, leaving only a small and more vulnerable segment of the population without a high school diploma, the researchers were concerned with the methods used in the previous studies to determine level of education. So they used U.S. Census data to categorize education in another way and came up with a different result.

White women in the bottom quartile experienced a more modest decline in life expectancy than others reported. No other race-sex group showed evidence of decline.

But the researchers say the finding is not cause for celebration when presented alongside evidence that white men and women in higher socioeconomic quartiles showed gains in life expectancy, while socioeconomically disadvantaged groups stagnated, leading to growing health inequality. The authors address an ever-widening income gap, and note that advances in medicine and technology continue to favor higher-income, better-educated people, despite recent efforts to expand access to care.


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