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Louisiana teachers' union concerned about educators' future; Supreme Court hears arguments in Trump immunity case; court issues restraining order against fracking waste-storage facility; landmark NE agreement takes a proactive approach to CO2 pipeline risks.

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Speaker Johnson accuses demonstrating students of getting support from Hamas. TikTok says it'll challenge the ban. And the Supreme Court dives into the gray area between abortion and pregnancy healthcare, and into former President Trump's broad immunity claims.

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New Study on Sodium and Health Being Questioned

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Friday, January 30, 2015   

ALBUQUERQUE, N.M. - Concerns are being raised by a number of health organizations and physicians over new research that downplays the link between high sodium consumption and health problems.

The study found no association between salt intake and risk of heart failure or mortality among the elderly over a 10-year span. But Dr. Francisco Lopez-Jimenez, director of preventive cardiology for the Mayo Clinic, noted that the participants self-reported their results, which he called unreliable.

"The measurement instrument that is the frequency questionnaire or a survey based on what people eat," he said. "To translate that into the actual amount of sodium the person is getting, I would say, is weak at best - the accuracy."

While new research always is welcome, he said, it remains clear that a high sodium diet increases the risk for high blood pressure, which if uncontrolled can lead to more serious health problems, including heart attack and stroke.

While people should be conscious of not regularly consuming too much salt, Lopez-Jimenez explained that getting too little also can lead to health issues.

"When you restrict the sodium intake too low, what we call the vascular volume shrinks," he said. "And when that happens, the body creates a response with catecholamines and adrenaline, and things that might actually increase the risk for cardiovascular events."

Catecholamines are hormones released into the bloodstream when the body is under stress. According to the Centers for Disease Control and Prevention, nearly one in three adults has high blood pressure, which is a primary or contributing cause in 1,000 deaths in the United States each day.

The study is online at archinte.jamanetwork.com. The Mayo Clinic recommendations are at mayoclinic.org.


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