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Low-sodium diet in pregnancy: effects on blood pressure and maternal nutritional status

Published online by Cambridge University Press:  09 March 2007

Gerrieke D Van Der Maten ,
Joop M. A Van Raaij ,
Leontien Visman ,
Lidwien J. M Van Der Heijden ,
Herman P Oosterbaan ,
Rinze De Boer ,
Tom K.A.B Eskes  and
Joseph G.A.J Hautvast
Gerrieke D Van Der Maten
Affiliation:
Department of Obstetrics and Gynaecology, Bosch Medicentrum (Groot Ziekengasthuis), 's-Hertogenbosch, The Netherlands
Joop M. A Van Raaij
Affiliation:
Department of Human Nutrition, Wageningen Agricultural University, Wageningen, The Netherlands
Leontien Visman
Affiliation:
Department of Obstetrics and Gynaecology, Bosch Medicentrum (Groot Ziekengasthuis), 's-Hertogenbosch, The Netherlands
Lidwien J. M Van Der Heijden
Affiliation:
Department of Human Nutrition, Wageningen Agricultural University, Wageningen, The Netherlands
Herman P Oosterbaan
Affiliation:
Department of Obstetrics and Gynaecology, Bosch Medicentrum (Groot Ziekengasthuis), 's-Hertogenbosch, The Netherlands
Rinze De Boer
Affiliation:
Department of Obstetrics and Gynaecology, Bosch Medicentrum (Groot Ziekengasthuis), 's-Hertogenbosch, The Netherlands
Tom K.A.B Eskes
Affiliation:
Department of Obstetrics and Gynaecology, Catholic University of Nijmegen, St. Radboud Hospital, Nijmegen, The Netherlands
Joseph G.A.J Hautvast
Affiliation:
Department of Human Nutrition, Wageningen Agricultural University, Wageningen, The Netherlands
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Abstract

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In ninety-four Dutch nulliparous women the effects of a low-Na diet in pregnancy on blood pressure, energy and nutrient intake, Ca metabolism, Zn and Mg status and body composition were studied longitudinally. The women were randomly divided into an intervention group (n 41), which used a low-Na diet (mean urinary Na excretion 61 mmol/24 h) from week 14 of pregnancy until delivery and a control group (n 53; mean urinary Na excretion 142 mmol/24 h). No effect of the diet on blood pressure was observed. The use of a low-Na diet resulted in significantly reduced intakes of energy, protein, carbohydrates, fat, Ca, Zn, Mg, Fe and cholesterol. However, the women on the low-Na diet appeared to be able to adapt quite well to the reduced intake since Ca, Zn and Mg homeostasis was maintained. In the case of Ca and Mg this was probably due to the observed reduced urinary excretions of these nutrients. Non-significant reductions in weight gain (1·5 kg) and fat-mass gain (0·9 kg) over pregnancy were found in the women on the low-Na diet. No significant effects of the diet on birth weight or placental weight were observed.

Keywords

PregnancySodiumBlood pressureNutritional status
Type
Human and Clinical Nutrition
Information
British Journal of Nutrition , Volume 77 , Issue 5 , May 1997 , pp. 703 - 720
Copyright
Copyright © The Nutrition Society 1997

References

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