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Cut Back on Sodas to Lower Blood Pressure

Drinking Fewer Sweetened Drinks Reduces Blood Pressure, Study Finds
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WebMD Health News
Reviewed by Laura J. Martin, MD

May 24, 2010 -- Cutting back on sugary sodas and other sweet beverages may help lower blood pressure, according to new research in Circulation.

Previous studies have linked sugary beverages to obesity, type 2 diabetes, and metabolic syndrome, a cluster of risk factors that increase the risk for heart disease and diabetes, but the new study is one of the first to show that drinking too many sweetened beverages can increase blood pressure levels. High blood pressure is considered a major risk factor for heart disease and stroke.

“Cutting back soda consumption will benefit your blood pressure,” says researcher Liwei Chen, MD, PhD, an assistant professor of epidemiology at Louisiana State University Health Science Center School of Public Health in New Orleans.

 

Sugary Drinks and Blood Pressure

The new study involved 810 adults aged 25 to 79 with prehypertension or early stage 1 hypertension who were taking part in an 18-month study designed to prevent or reduce high blood pressure with weight loss, exercise, and diet.

Prehypertension is defined as a systolic blood pressure reading between 120 and 139 or a diastolic blood pressure of 80 to 89. Stage 1 hypertension is defined as a systolic blood pressure between 140 and 159 or a diastolic blood pressure between 90 and 99. Systolic blood pressure is the upper number in a blood pressure measurement and refers to the pressure when the heart beats. Diastolic blood pressure, the lower number, is the pressure between beats. A blood pressure reading of less than 120/80 is considered ideal.

Most people in the study drank an average of 10.5 fluid ounces of sugar or high fructose corn syrup-sweetened beverages a day including non-diet soft drinks, fruit drinks, lemonade, and fruit punch when the study began.

Halving their soda intake resulted in a 1.8 point reduction in systolic blood pressure and a 1.1 point drop in diastolic pressure.

The public health benefit is “substantial,” she says. A 3-point reduction in systolic blood pressure should reduce risk of death after stroke by 8% and heart disease mortality by 5%, according to information cited in the new report.

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