Postpartum vitamin D insufficiency and secondary hyperparathyroidism in healthy Danish women
Objective: To examine vitamin D status and parathyroid function in normal Danish women postpartum. Design: Three cross-sectional measures during follow-up of 89 women postpartum. Subjects and intervention: We assessed vitamin D status by measuring plasma 25-hydroxyvitamin D (P-25OHD) and the degree...
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| Published in | European journal of clinical nutrition Vol. 60; no. 10; pp. 1214 - 1221 |
|---|---|
| Main Authors | , , , , , |
| Format | Journal Article |
| Language | English |
| Published |
London
Nature Publishing Group UK
01.10.2006
Nature Publishing Nature Publishing Group |
| Subjects | |
| Online Access | Get full text |
| ISSN | 0954-3007 1476-5640 |
| DOI | 10.1038/sj.ejcn.1602440 |
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| Abstract | Objective: To examine vitamin D status and parathyroid function in normal Danish women postpartum. Design: Three cross-sectional measures during follow-up of 89 women postpartum. Subjects and intervention: We assessed vitamin D status by measuring plasma 25-hydroxyvitamin D (P-25OHD) and the degree of secondary hyperparathyroidism by measuring plasma parathyroid hormone (P-PTH) in 89 Caucasian women at three consecutive visits: (mean (range)) 23 (10-37) days (spring), 117 (95-140) days (late summer) and 274 (254-323) days (winter) postpartum. Results: P-25OHD showed seasonal variations with higher values in late summer than in the other periods (P<0.001). At the first visit, 65% received vitamin D supplements. At the following visits, almost 50% were supplemented. Vitamin D insufficiency (P-25OHD<50 nmol/l) occurred more often during winter (28%) than in spring (14%) (Fisher's exact test, P=0.02) or late summer (7%) (P=0.0001). Irrespective of season, vitamin D insufficiency occurred most frequent in women who did not take vitamin D supplements (Fisher's exact test, P<0.02). Frank vitamin D deficiency (P-25OHD<25 nmol/l) was observed during winter in 6%. At all three periods, P-25OHD correlated inversely with P-PTH indicating secondary hyperparathyroidism at deficient vitamin D status. During spring, late summer and winter three, one and four females, respectively, had elevated plasma PTH. Conclusion: Vitamin D insufficiency with secondary hyperparathyroidism is a frequent finding in healthy Danish women postpartum and especially during winter. Vitamin D supplements reduced the risk of vitamin D insufficiency, especially during winter. Our results support the importance of increased alertness regarding information of pregnant and lactating women about vitamin D supplements. Furthermore, it has to be studied whether the present recommendations of an intake of 5-10 g vitamin D/day are sufficient, especially during winter months. |
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| AbstractList | Objective: To examine vitamin D status and parathyroid function in normal Danish women postpartum. Design: Three cross-sectional measures during follow-up of 89 women postpartum. Subjects and intervention: We assessed vitamin D status by measuring plasma 25-hydroxyvitamin D (P-25OHD) and the degree of secondary hyperparathyroidism by measuring plasma parathyroid hormone (P-PTH) in 89 Caucasian women at three consecutive visits: (mean (range)) 23 (10-37) days (spring), 117 (95-140) days (late summer) and 274 (254-323) days (winter) postpartum. Results: P-25OHD showed seasonal variations with higher values in late summer than in the other periods (P<0.001). At the first visit, 65% received vitamin D supplements. At the following visits, almost 50% were supplemented. Vitamin D insufficiency (P-25OHD<50 nmol/l) occurred more often during winter (28%) than in spring (14%) (Fisher's exact test, P=0.02) or late summer (7%) (P=0.0001). Irrespective of season, vitamin D insufficiency occurred most frequent in women who did not take vitamin D supplements (Fisher's exact test, P<0.02). Frank vitamin D deficiency (P-25OHD<25 nmol/l) was observed during winter in 6%. At all three periods, P-25OHD correlated inversely with P-PTH indicating secondary hyperparathyroidism at deficient vitamin D status. During spring, late summer and winter three, one and four females, respectively, had elevated plasma PTH. Conclusion: Vitamin D insufficiency with secondary hyperparathyroidism is a frequent finding in healthy Danish women postpartum and especially during winter. Vitamin D supplements reduced the risk of vitamin D insufficiency, especially during winter. Our results support the importance of increased alertness regarding information of pregnant and lactating women about vitamin D supplements. Furthermore, it has to be studied whether the present recommendations of an intake of 5-10 g vitamin D/day are sufficient, especially during winter months. To examine vitamin D status and parathyroid function in normal Danish women postpartum. Three cross-sectional measures during follow-up of 89 women postpartum. We assessed vitamin D status by measuring plasma 25-hydroxyvitamin D (P-25OHD) and the degree of secondary hyperparathyroidism by measuring plasma parathyroid hormone (P-PTH) in 89 Caucasian women at three consecutive visits: (mean (range)) 23 (10-37) days (spring), 117 (95-140) days (late summer) and 274 (254-323) days (winter) postpartum. P-25OHD showed seasonal variations with higher values in late summer than in the other periods (P < 0.001). At the first visit, 65% received vitamin D supplements. At the following visits, almost 50% were supplemented. Vitamin D insufficiency (P-25OHD < 50 nmol/l) occurred more often during winter (28%) than in spring (14%) (Fisher's exact test, P = 0.02) or late summer (7%) (P = 0.0001). Irrespective of season, vitamin D insufficiency occurred most frequent in women who did not take vitamin D supplements (Fisher's exact test, P < 0.02). Frank vitamin D deficiency (P-25OHD < 25 nmol/l) was observed during winter in 6%. At all three periods, P-25OHD correlated inversely with P-PTH indicating secondary hyperparathyroidism at deficient vitamin D status. During spring, late summer and winter three, one and four females, respectively, had elevated plasma PTH. Vitamin D insufficiency with secondary hyperparathyroidism is a frequent finding in healthy Danish women postpartum and especially during winter. Vitamin D supplements reduced the risk of vitamin D insufficiency, especially during winter. Our results support the importance of increased alertness regarding information of pregnant and lactating women about vitamin D supplements. Furthermore, it has to be studied whether the present recommendations of an intake of 5-10 microg vitamin D/day are sufficient, especially during winter months. To examine vitamin D status and parathyroid function in normal Danish women postpartum.OBJECTIVETo examine vitamin D status and parathyroid function in normal Danish women postpartum.Three cross-sectional measures during follow-up of 89 women postpartum.DESIGNThree cross-sectional measures during follow-up of 89 women postpartum.We assessed vitamin D status by measuring plasma 25-hydroxyvitamin D (P-25OHD) and the degree of secondary hyperparathyroidism by measuring plasma parathyroid hormone (P-PTH) in 89 Caucasian women at three consecutive visits: (mean (range)) 23 (10-37) days (spring), 117 (95-140) days (late summer) and 274 (254-323) days (winter) postpartum.SUBJECTS AND INTERVENTIONWe assessed vitamin D status by measuring plasma 25-hydroxyvitamin D (P-25OHD) and the degree of secondary hyperparathyroidism by measuring plasma parathyroid hormone (P-PTH) in 89 Caucasian women at three consecutive visits: (mean (range)) 23 (10-37) days (spring), 117 (95-140) days (late summer) and 274 (254-323) days (winter) postpartum.P-25OHD showed seasonal variations with higher values in late summer than in the other periods (P < 0.001). At the first visit, 65% received vitamin D supplements. At the following visits, almost 50% were supplemented. Vitamin D insufficiency (P-25OHD < 50 nmol/l) occurred more often during winter (28%) than in spring (14%) (Fisher's exact test, P = 0.02) or late summer (7%) (P = 0.0001). Irrespective of season, vitamin D insufficiency occurred most frequent in women who did not take vitamin D supplements (Fisher's exact test, P < 0.02). Frank vitamin D deficiency (P-25OHD < 25 nmol/l) was observed during winter in 6%. At all three periods, P-25OHD correlated inversely with P-PTH indicating secondary hyperparathyroidism at deficient vitamin D status. During spring, late summer and winter three, one and four females, respectively, had elevated plasma PTH.RESULTSP-25OHD showed seasonal variations with higher values in late summer than in the other periods (P < 0.001). At the first visit, 65% received vitamin D supplements. At the following visits, almost 50% were supplemented. Vitamin D insufficiency (P-25OHD < 50 nmol/l) occurred more often during winter (28%) than in spring (14%) (Fisher's exact test, P = 0.02) or late summer (7%) (P = 0.0001). Irrespective of season, vitamin D insufficiency occurred most frequent in women who did not take vitamin D supplements (Fisher's exact test, P < 0.02). Frank vitamin D deficiency (P-25OHD < 25 nmol/l) was observed during winter in 6%. At all three periods, P-25OHD correlated inversely with P-PTH indicating secondary hyperparathyroidism at deficient vitamin D status. During spring, late summer and winter three, one and four females, respectively, had elevated plasma PTH.Vitamin D insufficiency with secondary hyperparathyroidism is a frequent finding in healthy Danish women postpartum and especially during winter. Vitamin D supplements reduced the risk of vitamin D insufficiency, especially during winter. Our results support the importance of increased alertness regarding information of pregnant and lactating women about vitamin D supplements. Furthermore, it has to be studied whether the present recommendations of an intake of 5-10 microg vitamin D/day are sufficient, especially during winter months.CONCLUSIONVitamin D insufficiency with secondary hyperparathyroidism is a frequent finding in healthy Danish women postpartum and especially during winter. Vitamin D supplements reduced the risk of vitamin D insufficiency, especially during winter. Our results support the importance of increased alertness regarding information of pregnant and lactating women about vitamin D supplements. Furthermore, it has to be studied whether the present recommendations of an intake of 5-10 microg vitamin D/day are sufficient, especially during winter months. Objective:To examine vitamin D status and parathyroid function in normal Danish women postpartum.Design:Three cross-sectional measures during follow-up of 89 women postpartum.Subjects and intervention:We assessed vitamin D status by measuring plasma 25-hydroxyvitamin D (P-25OHD) and the degree of secondary hyperparathyroidism by measuring plasma parathyroid hormone (P-PTH) in 89 Caucasian women at three consecutive visits: (mean (range)) 23 (10–37) days (spring), 117 (95–140) days (late summer) and 274 (254–323) days (winter) postpartum.Results:P-25OHD showed seasonal variations with higher values in late summer than in the other periods (P<0.001). At the first visit, 65% received vitamin D supplements. At the following visits, almost 50% were supplemented. Vitamin D insufficiency (P-25OHD<50 nmol/l) occurred more often during winter (28%) than in spring (14%) (Fisher's exact test, P=0.02) or late summer (7%) (P=0.0001). Irrespective of season, vitamin D insufficiency occurred most frequent in women who did not take vitamin D supplements (Fisher's exact test, P<0.02). Frank vitamin D deficiency (P-25OHD<25 nmol/l) was observed during winter in 6%. At all three periods, P-25OHD correlated inversely with P-PTH indicating secondary hyperparathyroidism at deficient vitamin D status. During spring, late summer and winter three, one and four females, respectively, had elevated plasma PTH.Conclusion:Vitamin D insufficiency with secondary hyperparathyroidism is a frequent finding in healthy Danish women postpartum and especially during winter. Vitamin D supplements reduced the risk of vitamin D insufficiency, especially during winter. Our results support the importance of increased alertness regarding information of pregnant and lactating women about vitamin D supplements. Furthermore, it has to be studied whether the present recommendations of an intake of 5–10 μg vitamin D/day are sufficient, especially during winter months. To examine vitamin D status and parathyroid function in normal Danish women postpartum. Three cross-sectional measures during follow-up of 89 women postpartum. We assessed vitamin D status by measuring plasma 25-hydroxyvitamin D (P-25OHD) and the degree of secondary hyperparathyroidism by measuring plasma parathyroid hormone (P-PTH) in 89 Caucasian women at three consecutive visits: (mean (range)) 23 (10-37) days (spring), 117 (95-140) days (late summer) and 274 (254-323) days (winter) postpartum. P-25OHD showed seasonal variations with higher values in late summer than in the other periods (P < 0.001). At the first visit, 65% received vitamin D supplements. At the following visits, almost 50% were supplemented. Vitamin D insufficiency (P-25OHD < 50 nmol/l) occurred more often during winter (28%) than in spring (14%) (Fisher's exact test, P = 0.02) or late summer (7%) (P = 0.0001). Irrespective of season, vitamin D insufficiency occurred most frequent in women who did not take vitamin D supplements (Fisher's exact test, P < 0.02). Frank vitamin D deficiency (P-25OHD < 25 nmol/l) was observed during winter in 6%. At all three periods, P-25OHD correlated inversely with P-PTH indicating secondary hyperparathyroidism at deficient vitamin D status. During spring, late summer and winter three, one and four females, respectively, had elevated plasma PTH. Vitamin D insufficiency with secondary hyperparathyroidism is a frequent finding in healthy Danish women postpartum and especially during winter. Vitamin D supplements reduced the risk of vitamin D insufficiency, especially during winter. Our results support the importance of increased alertness regarding information of pregnant and lactating women about vitamin D supplements. Furthermore, it has to be studied whether the present recommendations of an intake of 5-10 microg vitamin D/day are sufficient, especially during winter months. Objective: To examine vitamin D status and parathyroid function in normal Danish women postpartum. Design: Three cross-sectional measures during follow-up of 89 women postpartum. Subjects and intervention: We assessed vitamin D status by measuring plasma 25-hydroxyvitamin D (P-25OHD) and the degree of secondary hyperparathyroidism by measuring plasma parathyroid hormone (P-PTH) in 89 Caucasian women at three consecutive visits: (mean (range)) 23 (10–37) days (spring), 117 (95–140) days (late summer) and 274 (254–323) days (winter) postpartum. Results: P-25OHD showed seasonal variations with higher values in late summer than in the other periods ( P <0.001). At the first visit, 65% received vitamin D supplements. At the following visits, almost 50% were supplemented. Vitamin D insufficiency (P-25OHD<50 nmol/l) occurred more often during winter (28%) than in spring (14%) (Fisher's exact test, P =0.02) or late summer (7%) ( P =0.0001). Irrespective of season, vitamin D insufficiency occurred most frequent in women who did not take vitamin D supplements (Fisher's exact test, P <0.02). Frank vitamin D deficiency (P-25OHD<25 nmol/l) was observed during winter in 6%. At all three periods, P-25OHD correlated inversely with P-PTH indicating secondary hyperparathyroidism at deficient vitamin D status. During spring, late summer and winter three, one and four females, respectively, had elevated plasma PTH. Conclusion: Vitamin D insufficiency with secondary hyperparathyroidism is a frequent finding in healthy Danish women postpartum and especially during winter. Vitamin D supplements reduced the risk of vitamin D insufficiency, especially during winter. Our results support the importance of increased alertness regarding information of pregnant and lactating women about vitamin D supplements. Furthermore, it has to be studied whether the present recommendations of an intake of 5–10 μ g vitamin D/day are sufficient, especially during winter months. Objective:To examine vitamin D status and parathyroid function in normal Danish women postpartum.Design:Three cross-sectional measures during follow-up of 89 women postpartum.Subjects and intervention:We assessed vitamin D status by measuring plasma 25-hydroxyvitamin D (P-25OHD) and the degree of secondary hyperparathyroidism by measuring plasma parathyroid hormone (P-PTH) in 89 Caucasian women at three consecutive visits: (mean (range)) 23 (10-37) days (spring), 117 (95-140) days (late summer) and 274 (254-323) days (winter) postpartum. Results:P-25OHD showed seasonal variations with higher values in late summer than in the other periods (P<0.001). At the first visit, 65% received vitamin D supplements. At the following visits, almost 50% were supplemented. Vitamin D insufficiency (P-25OHD<50nmol/l) occurred more often during winter (28%) than in spring (14%) (Fisher's exact test, P=0.02) or late summer (7%) (P=0.0001). Irrespective of season, vitamin D insufficiency occurred most frequent in women who did not take vitamin D supplements (Fisher's exact test, P<0.02). Frank vitamin D deficiency (P-25OHD<25nmol/l) was observed during winter in 6%. At all three periods, P-25OHD correlated inversely with P-PTH indicating secondary hyperparathyroidism at deficient vitamin D status. During spring, late summer and winter three, one and four females, respectively, had elevated plasma PTH. Conclusion:Vitamin D insufficiency with secondary hyperparathyroidism is a frequent finding in healthy Danish women postpartum and especially during winter. Vitamin D supplements reduced the risk of vitamin D insufficiency, especially during winter. Our results support the importance of increased alertness regarding information of pregnant and lactating women about vitamin D supplements. Furthermore, it has to be studied whether the present recommendations of an intake of 5-10 mu g vitamin D/day are sufficient, especially during winter months.European Journal of Clinical Nutrition (2006) 60, 1214-1221. doi:10.1038/sj.ejcn.1602440; published online 24 May 2006 |
| Audience | Professional Academic |
| Author | Mosekilde, L Ramlau-Hansen, C.H Rejnmark, L Heickendorff, L Henriksen, T.B Moller, U.K |
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| CitedBy_id | crossref_primary_10_1038_ejcn_2013_152 crossref_primary_10_1007_s13224_015_0746_1 crossref_primary_10_1111_j_1365_2265_2008_03186_x crossref_primary_10_4161_derm_22779 crossref_primary_10_1038_ejcn_2012_18 crossref_primary_10_1371_journal_pone_0180512 crossref_primary_10_1097_MED_0b013e3282f315ef crossref_primary_10_1097_MED_0b013e32834c3c7c |
| Cites_doi | 10.1016/S0022-3476(82)80514-3 10.1210/jcem.80.12.8530622 10.1001/jama.1996.03540070045029 10.7326/0003-4819-115-7-505 10.1007/s00431-004-1413-1 10.1210/edrv.22.4.0437 10.1093/ajcn/80.6.1740S 10.1093/ajcn/80.6.1748S 10.1093/jn/133.5.1693S 10.1046/j.1525-1373.2000.22333.x 10.1016/S8756-3282(02)00866-9 10.1097/00005176-200007000-00025 10.1002/jbmr.5650100907 10.1056/NEJM199708213370803 10.1210/jc.2002-021064 10.1093/ajcn/79.5.717 10.1111/j.1365-2265.2005.02226.x 10.1093/ajcn/67.4.693 10.1093/ajcn/73.2.288 10.1093/ajcn/77.1.204 10.1093/ajcn/80.6.1752S 10.1093/ajcn/67.2.284 10.1079/BJN2001345 |
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| Keywords | secondary postpartum hyperparathyroidism vitamin D lactation Endocrinopathy Human Secondary Lactation Nutrition Vitamin D Parathyroid diseases Danish Female Woman Hyperparathyroidism |
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| Snippet | Objective: To examine vitamin D status and parathyroid function in normal Danish women postpartum. Design: Three cross-sectional measures during follow-up of... Objective: To examine vitamin D status and parathyroid function in normal Danish women postpartum. Design: Three cross-sectional measures during follow-up of... To examine vitamin D status and parathyroid function in normal Danish women postpartum. Three cross-sectional measures during follow-up of 89 women postpartum.... To examine vitamin D status and parathyroid function in normal Danish women postpartum. Three cross-sectional measures during follow-up of 89 women postpartum.... Objective:To examine vitamin D status and parathyroid function in normal Danish women postpartum.Design:Three cross-sectional measures during follow-up of 89... To examine vitamin D status and parathyroid function in normal Danish women postpartum.OBJECTIVETo examine vitamin D status and parathyroid function in normal... |
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| SubjectTerms | 25-Hydroxyvitamin D administration & dosage Adult adults Alertness analogs & derivatives Biological and medical sciences blood blood chemistry Calciferol Clinical Nutrition Clinical outcomes Cross-Sectional Studies deficiency diseases Denmark Denmark - epidemiology Dietary Supplements drug therapy Endocrinopathies Epidemiology Female Females Humans Hyperparathyroidism Hyperparathyroidism - blood Hyperparathyroidism - drug therapy Hyperparathyroidism - epidemiology Internal Medicine lactation Medical sciences Medicine Medicine & Public Health Metabolic Diseases Non tumoral diseases. Target tissue resistance. Benign neoplasms nutrient deficiencies Nutrition Nutritional Status original-article Parathyroid Parathyroid hormone Parathyroid Hormone - blood Parathyroids. Parafollicular cells. Cholecalciferol. Phosphocalcic homeostasis (diseases) Postpartum Postpartum Period Public Health Risk reduction seasonal variation Seasonal variations Seasons Spring Spring (season) Summer therapeutic use Thyroid diseases Vitamin D Vitamin D - administration & dosage Vitamin D - analogs & derivatives Vitamin D - blood Vitamin D - therapeutic use Vitamin D Deficiency Vitamin D Deficiency - blood Vitamin D Deficiency - drug therapy Vitamin D Deficiency - epidemiology Vitamin deficiency vitamin supplements Winter Women |
| Title | Postpartum vitamin D insufficiency and secondary hyperparathyroidism in healthy Danish women |
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