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MONDAY, March 5, 2018 (HealthDay News) — Other dietary components have a minimal impact on attenuating the adverse association of dietary sodium with blood pressure (BP), according to a study published online March 5 in Hypertension<\/i>.<\/p>\n
Jeremiah Stamler, M.D., from Northwestern University in Chicago, and colleagues examined whether the relationship between dietary sodium and BP is modulated by other dietary factors.<\/p>\n
The researchers observed direct relations to BP for 24-hour urinary sodium excretion and the urinary sodium\/potassium ratio among 4,680 men and women aged 40 to 59 years of age, with control for multiple non-dietary factors, but not body mass index. Among the 2,195 American participants, two standard deviation higher 24-hour urinary sodium excretion correlated with a 3.7 mm Hg higher systolic BP. After controlling for 13 macronutrients, 12 vitamins, seven minerals, and 18 amino acids, as well as for sex, age, race, and socioeconomic strata, these correlations persisted. Sodium-BP, but not sodium\/potassium-BP, correlations were attenuated with control for body mass index. Significant positive relations to BP of urinary sodium were seen for normal-weight and obese participants; overweight individuals had weaker correlations. Potassium intake blunted the sodium-BP correlation at lower, but not higher, levels of 24-hour sodium excretion.<\/p>\n
“These findings underscore the importance of reducing salt intake for the prevention and control of prehypertension and hypertension,” the authors write.<\/p>\n
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