TY - JOUR

T1 - Effect of two different multimicronutrient supplements on vitamin D status in women of childbearing age: a randomized trial

AU - Pilz, S.

AU - Hahn, Andreas

AU - Schön, C.

AU - Wilhelm, M.

AU - Obeid, R.

N1 - Publisher Copyright: © 2017 by the authors; licensee MDPI, Basel, Switzerland. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.

PY - 2017/1/4

Y1 - 2017/1/4

N2 - The German Nutrition Society raised in 2012 the recommended daily vitamin D intake from 200 to 800 international units (IU) to achieve 25-hydroxyvitamin D (25 (OH) D) levels of at least 50 nmol/L, even when endogenous vitamin D synthesis is minimal such as in winter. We aimed to evaluate this recommendation in women of childbearing age. This is a single-center, randomized, open trial conducted from 8 January to 9 May 2016 in Esslingen, Germany. We randomized 201 apparently healthy women to receive for 8 weeks a daily multimicronutrient supplement containing either 200 IU (n = 100) or 800 IU vitamin D3 (n = 101). Primary outcome measure was serum 25 (OH) D. 196 participants completed the trial. Increases in 25 (OH) D (median with interquartile range) from baseline to study end were 13.2 (5.9 to 20.7) nmol/L in the 200 IU group, and 35.8 (18.2 to 52.8) nmol/L in the 800 IU group (p < 0.001 for the between group difference). At study end, levels of ≥50 nmol/L were present in 70.4% of the 200 IU group and in 99% of the 800 IU group. Participants on hormonal contraceptives had higher baseline levels and a stronger increase in 25 (OH) D. In conclusion, daily supplementation of 800 IU vitamin D3 during wintertime in Germany is sufficient to achieve a 25 (OH) D level of at least 50 nmol/L in almost all women of childbearing age, whereas 200 IU are insufficient.

AB - The German Nutrition Society raised in 2012 the recommended daily vitamin D intake from 200 to 800 international units (IU) to achieve 25-hydroxyvitamin D (25 (OH) D) levels of at least 50 nmol/L, even when endogenous vitamin D synthesis is minimal such as in winter. We aimed to evaluate this recommendation in women of childbearing age. This is a single-center, randomized, open trial conducted from 8 January to 9 May 2016 in Esslingen, Germany. We randomized 201 apparently healthy women to receive for 8 weeks a daily multimicronutrient supplement containing either 200 IU (n = 100) or 800 IU vitamin D3 (n = 101). Primary outcome measure was serum 25 (OH) D. 196 participants completed the trial. Increases in 25 (OH) D (median with interquartile range) from baseline to study end were 13.2 (5.9 to 20.7) nmol/L in the 200 IU group, and 35.8 (18.2 to 52.8) nmol/L in the 800 IU group (p < 0.001 for the between group difference). At study end, levels of ≥50 nmol/L were present in 70.4% of the 200 IU group and in 99% of the 800 IU group. Participants on hormonal contraceptives had higher baseline levels and a stronger increase in 25 (OH) D. In conclusion, daily supplementation of 800 IU vitamin D3 during wintertime in Germany is sufficient to achieve a 25 (OH) D level of at least 50 nmol/L in almost all women of childbearing age, whereas 200 IU are insufficient.

KW - 25(OH)D

KW - Multimicronutrient

KW - Randomized controlled trial

KW - Supplementation

KW - Vitamin D

KW - Women

UR - http://www.scopus.com/inward/record.url?scp=85009143067&partnerID=8YFLogxK

U2 - 10.3390/nu9010030

DO - 10.3390/nu9010030

M3 - Article

VL - 9

JO - NUTRIENTS

JF - NUTRIENTS

SN - 2072-6643

IS - 1

M1 - 30

ER -