Correlation between the Rates and Mortality of Ischemic Heart Disease and Magnesium Concentrations in Ohio Drinking Water
This study tested the hypothesis that high concentrations of magnesium in drinking water may help reduce death from ischemic heart disease. The study was conducted using linear regression that relates ischemic heart disease, a dependent variable, to magnesium concentrations, an independent variable. Magnesium concentrations in 69 Ohio counties ranging from 10 to 70 mg/l were used in the study. An inverse correlation was obtained between heart disease (incidence and mortality) and magnesium concentrations supporting the subject hypothesis.
Low correlation coefficients were obtained indicating that factors other than magnesium concentrations may also affect heart disease incidence and mortality (e.g., high blood pressure, high cholesterol, genetic factors, etc.). Magnesium concentrations in the water supply were highest where dolomite (carbonate rock rich in calcium and magnesium) bedrock and dolomitic-rich glacial till are present in Ohio.
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