Association of soil potassium and sodium concentrations with spatial disparities of prevalence and mortality rates of hypertensive diseases in the USA
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Crop available soil potassium is generally low and on the decline in the southeastern states of the USA because of the increasing crop and runoff removal and decreasing application of potassium fertilizer. Hypertension-related mortality rates are also high in the southeastern states and are on the rise. Among 41 elements analyzed from 4856 sites across all 48 states, potassium is identified as the only independent element whose soil concentration has significant association with spatial disparities of essential hypertension and hypertension-related mortality rates in the 48 states between 1999 and 2014. Essential hypertension and hypertension-related mortality rates of the 6 states with the lowest soil potassium concentration are about 50–26% higher than that of the 6 states with the highest soil potassium concentration in the 48 states (RR: 1.50, 1.26, low CI 95% 1.47, 1.25 and upper CI 95% 1.53, 1.27, respectively). Though sodium was not identified as an independent factor, an apparent significant inverse correlation exists between hypertension prevalence rates and soil sodium concentration in the 48 states (r = − 0.66, p = 0.00). There likely has been a decline of potassium in USA produces per unit weight over time and a likely association between this decline and increasing hypertension rate, particularly in the southeastern states. Hence, results of this study suggest the need of increasing potassium intakes for reducing hypertension-related mortality rates in the southeastern states. Results of this study also support further examination of potential benefits of sodium from mixture of non-chloride salts in natural produces.
KeywordsHypertension prevalence Hypertension-related mortality Potassium Sodium Diabetes Obesity
The author wishes to thank Michael Sun from Johns Hopkins University for his help with data processing and editorial assistance.
- AlGhatrif, M., Wang, M., Fedorova, O. V., Bagrov, A. Y., & Lakatta, E. G. (2017). The pressure of aging. Medical Clinics, 101, 81–101.Google Scholar
- Demigne, C., Sabboh, H., Remesy, C., & Meneton, P. (2004). Protective effects of high dietary potassium: Nutritional and metabolic aspects. Journal of Nutrition, 134, 2903–2906.Google Scholar
- Houston, M. C. (2007). The role of mercury and cadmium heavy metals in vascular disease, hypertension, coronary heart disease, and myocardial infarction. Alternative Therapies in Health and Medicine, 13, S128–S133.Google Scholar
- International Plant Nutrition Institute (IPNI). (2017). Soil test levels in North America, 2015. http://soiltest.ipni.net/maps/Median. Accessed 18 July 2017.
- Pierannunzi, C., Hu, S., & Balluz, L. (2013). A systematic review of publications assessing reliability and validity of the Behavioral Risk Factor Surveillance System (BRFSS), 2004–2011. BMC Medical Research Methodology, 13(49), 1–14.Google Scholar
- Pin, R. (2011). Lifetime mobility in the United States: 2010, American Community Survey Briefs. Accessible at https://www.census.gov/prod/2011pubs/acsbr10-07.pdf. Accessed 9 Jan 2018.
- Schorr, U., Distler, A., & Sharma, A. M. (1996). Effect of Na chloride-and Na bicarbonate-rich mineral water on blood pressure and metabolic parameters in elderly normotensive individuals: A randomized double-blind crossover trial. Journal of Hypertension, 14, 131–136.Google Scholar
- Smith, D. B., Cannon, W. F., Woodruff, L. G., Federico, S., & Ellefsen, K. J. (2014). Geochemical and mineralogical maps for soils of the contiguous United States. US Geological Survey Open-File Report 2014–1082. Accessible at http://pubs.usgs.gov/ds/801/.
- United States Department of Agriculture, Economic Research Service (USDA ERS). Fertilizer uses and prices. https://www.ers.usda.gov/data-products/fertilizer-use-and-price/. Accessed on 18 July 2017.
- United States Department of Agriculture (USDA), National Agricultural Statistics Service. (2017). Charts and maps, field crops, yield by year. https://www.nass.usda.gov/Charts_and_Maps/Field_Crops/index.php. Accessed on 18 July 2018.
- Weil, R. R., & Brady, N. C. (2016). The nature and properties of soils (15th ed.). New York City, New York: Pearson Education.Google Scholar