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The New Nordic Diet: phosphorus content and absorption

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Abstract

Purpose

High phosphorus content in the diet may have adverse effect on cardiovascular health. We investigated whether the New Nordic Diet (NND), based mainly on local, organic and less processed food and large amounts of fruit, vegetables, wholegrain and fish, versus an Average Danish Diet (ADD) would reduce the phosphorus load due to less phosphorus-containing food additives, animal protein and more plant-based proteins.

Methods

Phosphorus and creatinine were measured in plasma and urine at baseline, week 12 and week 26 in 132 centrally obese subjects with normal renal function as part of a post hoc analysis of data acquired from a 26-week controlled trial. We used the fractional phosphorus excretion as a measurement of phosphorus absorption.

Results

Mean baseline fractional phosphorus excretion was 20.9 ± 6.6 % in the NND group (n = 82) and 20.8 ± 5.5 % in the ADD group (n = 50) and was decreased by 2.8 ± 5.1 and 3.1 ± 5.4 %, respectively, (p = 0.6) at week 26. At week 26, the mean change in plasma phosphorus was 0.04 ± 0.12 mmol/L in the NND group and −0.03 ± 0.13 mmol/L in the ADD group (p = 0.001). Mean baseline phosphorus intake was 1950 ± 16 mg/10 MJ in the NND group and 1968 ± 22 mg/10 MJ in the ADD group and decreased less in the NND compared to the ADD (67 ± 36 mg/10 MJ and −266 ± 45 mg/day, respectively, p < 0.298).

Conclusion

Contrary to expectations, the NND had a high phosphorus intake and did not decrease the fractional phosphorus excretion compared with ADD. Further modifications of the diet are needed in order to make this food concept beneficial regarding phosphorus absorption.

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The authors declare that they have no conflicts of interest.

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Authors and Affiliations

  1. Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Rolighedsvej 30, 1958, Frederiksberg C, Denmark

    Louise Salomo, Sanne K. Poulsen, Thomas M. Larsen & Arne Astrup

  2. Department of Nephrology, Copenhagen University Hospital, Rigshospitalet, Blegdamsvej 9, 2100, Copenhagen Ø, Denmark

    Louise Salomo, Marianne Rix & Anne-Lise Kamper

Authors
  1. Louise Salomo
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  2. Sanne K. Poulsen
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Correspondence to Louise Salomo.

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Salomo, L., Poulsen, S.K., Rix, M. et al. The New Nordic Diet: phosphorus content and absorption. Eur J Nutr 55, 991–996 (2016). https://doi.org/10.1007/s00394-015-0913-2

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  • DOI: https://doi.org/10.1007/s00394-015-0913-2

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