NUI Galway’s Dr Andrew Smyth
Dr Smyth presented the initial findings of the study at Kidney Week 2014, the annual meeting of the American Society of Nephrology, which was attended by over 13,000 people. The study, which was called ‘Diet and Major Renal Outcomes: The NIH-AARP Diet and Health Study’, used data from a large US study (National Institutes of Health Diet and Health Study). Dr Martin O'Donnell of NUI Galway was the senior author on the report.
Over 500,000 people aged 50-71, living in the United States, provided medical information and completed a diet questionnaire, which was used to measure how healthy each person's diet was at baseline (using four different scoring systems), as well as calculating each person's intake of sodium and potassium. Using available follow-up data, the researchers explored the association between diet and kidney outcomes, including the need for dialysis or dying with chronic kidney disease. During the study period, almost 5,000 people required dialysis or died with chronic kidney disease.
Using three of the four diet scoring systems, people with the highest scores for diet quality had the lowest risk of kidney outcomes. In these three scoring systems, people scored highly for eating plenty of healthy foods (such as fruits and vegetables) and for eating low amounts of unhealthy foods (e.g. deep fried, fatty or sugary foods). The biggest effects were seen with the scoring systems that focus on the whole diet. The fourth scoring system, which focuses only on healthy foods (Recommended Food Score), was not associated with kidney outcomes. In addition, the researchers found that high sodium intake was associated with an increased risk of kidney outcomes, as was low potassium intake.
Using three of the four diet scoring systems, people with the highest scores for diet quality had the lowest risk of kidney outcomes. In these three scoring systems, people scored highly for eating plenty of healthy foods (such as fruits and vegetables) and for eating low amounts of unhealthy foods (e.g. deep fried, fatty or sugary foods). The biggest effects were seen with the scoring systems that focus on the whole diet. The fourth scoring system, which focuses only on healthy foods (Recommended Food Score), was not associated with kidney outcomes. In addition, the researchers found that high sodium intake was associated with an increased risk of kidney outcomes, as was low potassium intake.
View abstract here (p.14A): (copy and paste link) file:///C:/Users/0031535s/Downloads/KW14Abstracts.pdf
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