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Healthy diet linked to lower death rates among low-income residents in Southeastern USA

Date:
June 30, 2015
Source:
Vanderbilt University Medical Center
Summary:
Eating a healthy diet was linked with a lower risk of dying from heart disease, stroke, cancer or other diseases among a population of low-income individuals living in the Southeastern U.S., according to investigators. Nearly two-thirds of the participants in the study were African-American.
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Eating a healthy diet was linked with a lower risk of dying from heart disease, stroke, cancer or other diseases among a population of low-income individuals living in the Southeastern U.S., according to research led by Vanderbilt University investigators. Nearly two-thirds of the participants in the study were African-American.

The study by first author Danxia Yu, Ph.D., Vanderbilt research fellow, and lead author Wei Zheng, M.D., Ph.D., MPH, director of the Vanderbilt Epidemiology Center and chief of the Division of Epidemiology, was published in the latest issue of the journal PLOS Medicine. Investigators from the International Epidemiology Institute, the Harvard School of Public Health, and Meharry Medical College were also involved in the study.

The investigators analyzed data from the Southern Community Cohort Study (SCCS) which includes 84,735 adults, ages 40-79, recruited from 2002- 2009, mostly through community health centers serving low-income populations in 12 Southeastern states. More than half of the participants had an annual household income of less than $15,000 and 65 percent were African-American.

At the time of recruitment, participants responded to a detailed food frequency questionnaire which noted the types and amounts of foods in their usual diet. For this follow-up study the investigators used the federal government's Dietary Guidelines for Americans (DGA), and the Healthy Eating Index (HEI) to assess the healthfulness of the participants' diets. The DGA emphasizes a diet rich in vegetables, fruits, whole grains, seafood, legumes and nuts; moderate in low- or non-fat dairy and alcohol; and low in red and processed meats, sugar-sweetened foods and drinks and refined grains. .

Of the 77,572 participants with follow-up information over a mean period of 6.2 years, 6,906 participants died --2,244 from cardiovascular disease, 1,794 from cancer and 2,550 from other diseases. After controlling for factors such as age, weight, exercise, smoking and prior history of some chronic diseases, the investigators found that participants who ate the healthiest diet had an approximately 20 percent lower risk of death from those diseases than those with the least healthy diet.

The authors noted that previous studies have suggested African-Americans and low-socioeconomic adults, especially low-income African-American men, have more limited access to supermarkets and healthy foods and generally lower quality diets. However, few studies have evaluated the association between overall diet quality and disease mortality.

"This is the first study to our knowledge reporting this association in a low-income population that largely comprises African-Americans," said Zheng, the Anne Potter Wilson Professor of Medicine. "These findings present direct evidence that dietary modification may influence disease prevention in this underserved population."


Story Source:

Materials provided by Vanderbilt University Medical Center. Original written by Craig Boerner. Note: Content may be edited for style and length.


Journal Reference:

  1. Danxia Yu, Jennifer Sonderman, Maciej S. Buchowski, Joseph K. McLaughlin, Xiao-Ou Shu, Mark Steinwandel, Lisa B. Signorello, Xianglan Zhang, Margaret K. Hargreaves, William J. Blot, Wei Zheng. Healthy Eating and Risks of Total and Cause-Specific Death among Low-Income Populations of African-Americans and Other Adults in the Southeastern United States: A Prospective Cohort Study. PLOS Medicine, 2015; 12 (5): e1001830 DOI: 10.1371/journal.pmed.1001830

Cite This Page:

Vanderbilt University Medical Center. "Healthy diet linked to lower death rates among low-income residents in Southeastern USA." ScienceDaily. ScienceDaily, 30 June 2015. <www.sciencedaily.com/releases/2015/06/150630122406.htm>.
Vanderbilt University Medical Center. (2015, June 30). Healthy diet linked to lower death rates among low-income residents in Southeastern USA. ScienceDaily. Retrieved May 23, 2017 from www.sciencedaily.com/releases/2015/06/150630122406.htm
Vanderbilt University Medical Center. "Healthy diet linked to lower death rates among low-income residents in Southeastern USA." ScienceDaily. www.sciencedaily.com/releases/2015/06/150630122406.htm (accessed May 23, 2017).

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