Seasonality of sodium and potassium consumption in Switzerland. Data from three cross-sectional, population-based studies.

Marti-Soler, H; Pommier, C; Bochud, M; Guessous, I; Ponte, B; Pruijm, M; Ackermann, Daniel; Forni Ogna, V; Paccaud, F; Burnier, M; Pechère-Bertschi, A; Swiss Survey, on Salt Group; Devuyst, O; Marques-Vidal, P (2017). Seasonality of sodium and potassium consumption in Switzerland. Data from three cross-sectional, population-based studies. Nutrition, metabolism, and cardiovascular diseases : NMCD, 27(9), pp. 792-798. Elsevier 10.1016/j.numecd.2017.06.012

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BACKGROUND AND AIM Blood pressure displays a seasonal pattern. Whether this pattern is related to high sodium and/or low potassium intakes has not been investigated. We assessed if sodium and potassium consumption present a seasonal pattern. We also simulated the impact of seasonality of sodium consumption on systolic blood pressure levels. METHODS AND RESULTS Data from three Swiss population-based studies (n = 2845). Sodium and potassium consumption were assessed by urinary excretion using 24 h urine collection. Seasonality was assessed using the cosinor model and was adjusted for study, gender, age, body mass index, antihypertensive drug treatment, urinary creatinine and atmospheric relative humidity. The effect of sodium variation on blood pressure levels was estimated using data from a recent meta-analysis. Both sodium and potassium excretions showed a seasonal pattern. For sodium, the nadir occurred between August and October, and the peak between February and April, with a multivariate-adjusted seasonal variation (difference between peak and nadir) of 9.2 mmol. For potassium, the nadir occurred in October and the peak in April, with a multivariate-adjusted seasonal variation of 4.0 mmol. Excluding participants on antihypertensive drug treatment or stratifying the analysis by gender cancelled the seasonality of sodium consumption. The maximum impact of the seasonal variation in sodium consumption on systolic blood pressure ranged from 0.4 to 1.1 mm Hg, depending on the model considered. CONCLUSION Sodium and potassium consumptions present specific seasonal variations. These variations do not explain the seasonal variations in blood pressure levels.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Dermatology, Urology, Rheumatology, Nephrology, Osteoporosis (DURN) > Clinic of Nephrology and Hypertension

UniBE Contributor:

Ackermann, Daniel

Subjects:

600 Technology > 610 Medicine & health
500 Science > 570 Life sciences; biology

ISSN:

1590-3729

Publisher:

Elsevier

Language:

English

Submitter:

Daniel Ackermann

Date Deposited:

27 Feb 2018 10:53

Last Modified:

27 Feb 2018 10:53

Publisher DOI:

10.1016/j.numecd.2017.06.012

PubMed ID:

28756972

Uncontrolled Keywords:

Blood pressure Population based-study Potassium Seasonality Sodium

BORIS DOI:

10.7892/boris.109661

URI:

https://boris.unibe.ch/id/eprint/109661

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