Dietary Salt Intake is a Significant Determinant of Impaired Kidney Function in the General Population
Background/Aims: Kidney dysfunction is an important risk factor for cardiovascular disease and end-stage renal disease. This study investigated whether dietary salt intake predicts deterioration of kidney function in the general population. Methods: In all, 12 126 subjects with a normal estimated gl...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Karger Publishers
2018-08-01
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| Series: | Kidney & Blood Pressure Research |
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| Online Access: | https://www.karger.com/Article/FullText/492406 |
| _version_ | 1818520731696234496 |
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| author | Tomonori Sugiura Hiroyuki Takase Nobuyuki Ohte Yasuaki Dohi |
| author_facet | Tomonori Sugiura Hiroyuki Takase Nobuyuki Ohte Yasuaki Dohi |
| author_sort | Tomonori Sugiura |
| collection | DOAJ |
| description | Background/Aims: Kidney dysfunction is an important risk factor for cardiovascular disease and end-stage renal disease. This study investigated whether dietary salt intake predicts deterioration of kidney function in the general population. Methods: In all, 12 126 subjects with a normal estimated glomerular filtration rate (eGFR ≥60 mL/min per 1.73m2) attending an annual check-up were enrolled in the study and were followed-up for a median of 1754 days; the endpoint was the development of impaired kidney function (eGFR < 60 mL/min per 1.73m2). Individual salt intake was estimated using spot urine analysis. Results: At baseline, mean (± SD) salt intake and eGFR were 10.6 ± 3.4 g/day and 80.8 ± 12.9 mL/min per 1.73m2, respectively. During the follow-up period, 1384 subjects (25.2 per 1000 person-years) developed impaired kidney function. Multivariate Cox hazard regression analysis revealed salt intake as a significant predictor of the new onset of kidney impairment (hazard ratio 1.045; 95% confidence interval 1.025–1.065). Subjects were divided into two groups based on salt intake; the incidence of impaired kidney function was higher in the group with high than low salt intake (P < 0.001, log-rank test). Multivariate Cox hazard regression analysis indicated a 29% increased risk of developing impaired kidney function in the high-salt group. Multivariate linear regression analysis showed a significant correlation between salt intake and yearly decline in eGFR (β = 0.060, P < 0.001). Conclusion: Salt intake is associated with the development of impaired kidney function in the general population, independent of its effects on blood pressure. Salt restriction may help prevent the development of impaired kidney function. |
| first_indexed | 2024-12-11T01:41:31Z |
| format | Article |
| id | doaj.art-999a6e25b94a4b4bb19ee183d17d3583 |
| institution | Directory Open Access Journal |
| issn | 1420-4096 1423-0143 |
| language | English |
| last_indexed | 2024-12-11T01:41:31Z |
| publishDate | 2018-08-01 |
| publisher | Karger Publishers |
| record_format | Article |
| series | Kidney & Blood Pressure Research |
| spelling | doaj.art-999a6e25b94a4b4bb19ee183d17d35832022-12-22T01:25:02ZengKarger PublishersKidney & Blood Pressure Research1420-40961423-01432018-08-014341245125410.1159/000492406492406Dietary Salt Intake is a Significant Determinant of Impaired Kidney Function in the General PopulationTomonori SugiuraHiroyuki TakaseNobuyuki OhteYasuaki DohiBackground/Aims: Kidney dysfunction is an important risk factor for cardiovascular disease and end-stage renal disease. This study investigated whether dietary salt intake predicts deterioration of kidney function in the general population. Methods: In all, 12 126 subjects with a normal estimated glomerular filtration rate (eGFR ≥60 mL/min per 1.73m2) attending an annual check-up were enrolled in the study and were followed-up for a median of 1754 days; the endpoint was the development of impaired kidney function (eGFR < 60 mL/min per 1.73m2). Individual salt intake was estimated using spot urine analysis. Results: At baseline, mean (± SD) salt intake and eGFR were 10.6 ± 3.4 g/day and 80.8 ± 12.9 mL/min per 1.73m2, respectively. During the follow-up period, 1384 subjects (25.2 per 1000 person-years) developed impaired kidney function. Multivariate Cox hazard regression analysis revealed salt intake as a significant predictor of the new onset of kidney impairment (hazard ratio 1.045; 95% confidence interval 1.025–1.065). Subjects were divided into two groups based on salt intake; the incidence of impaired kidney function was higher in the group with high than low salt intake (P < 0.001, log-rank test). Multivariate Cox hazard regression analysis indicated a 29% increased risk of developing impaired kidney function in the high-salt group. Multivariate linear regression analysis showed a significant correlation between salt intake and yearly decline in eGFR (β = 0.060, P < 0.001). Conclusion: Salt intake is associated with the development of impaired kidney function in the general population, independent of its effects on blood pressure. Salt restriction may help prevent the development of impaired kidney function.https://www.karger.com/Article/FullText/492406Salt intakeImpaired kidney functionChronic kidney diseaseEstimated glomerular filtration rate |
| spellingShingle | Tomonori Sugiura Hiroyuki Takase Nobuyuki Ohte Yasuaki Dohi Dietary Salt Intake is a Significant Determinant of Impaired Kidney Function in the General Population Kidney & Blood Pressure Research Salt intake Impaired kidney function Chronic kidney disease Estimated glomerular filtration rate |
| title | Dietary Salt Intake is a Significant Determinant of Impaired Kidney Function in the General Population |
| title_full | Dietary Salt Intake is a Significant Determinant of Impaired Kidney Function in the General Population |
| title_fullStr | Dietary Salt Intake is a Significant Determinant of Impaired Kidney Function in the General Population |
| title_full_unstemmed | Dietary Salt Intake is a Significant Determinant of Impaired Kidney Function in the General Population |
| title_short | Dietary Salt Intake is a Significant Determinant of Impaired Kidney Function in the General Population |
| title_sort | dietary salt intake is a significant determinant of impaired kidney function in the general population |
| topic | Salt intake Impaired kidney function Chronic kidney disease Estimated glomerular filtration rate |
| url | https://www.karger.com/Article/FullText/492406 |
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