Estimation of the 25(OH) Vitamin D Threshold below which Secondary Hyperparathyroidism may Occur Among African Migrant Women in Paris.
Int J Vitam Nutr Res. 2011 Jul;81(4):218-24.
Emilion E, Emilion R.
Community Clinic, Paris, France.
Purpose: It has previously been shown that there is a threshold of serum 25-hydroxy vitamin D below which secondary hyperparathyroidism may occur. Our purpose was to estimate this threshold in a population of migrant African women living in Paris.Methods: Between February 2008 and December 2009, measurements of 25-hydroxy vitamin D and parathormone were performed in 165 African migrant women living in Paris. The estimation of 25-hydroxy vitamin D and parathormone marginal distributions as Gaussian mixtures, combined with a nonparametric kernel estimation method of the regression function of parathormone on 25-hydroxy vitamin D, provided the desired estimate of serum 25-hydroxy vitamin D threshold.
Results: In our sample of African women, our method has shown that serum 25-hydroxy vitamin D levels below 48 ± 2 nmol/L may induce an increase in parathormone concentrations.
Conclusion: In this sample, our method provided a reliable estimate (95 % confidence interval) of the serum 25-hydroxy vitamin D level below which an increase in parathormone concentrations can be observed.
- Africa category listing has
26 items along with related searches
- Overview Dark Skin Vitamin D
- The darker the skin the less the vitamin D – July 2010
- Perhaps just 40 ng of vitamin D if high latitude or dark skin
Africans in Europe might only need 19 ng of vitamin D – estimated from PTH July 2011
- 20 ng of vitamin D is enough for African American PTH – Dec 2011
- Blacks may need less vitamin D than whites – PTH Aug 2010
- Vitamin D and Primary Hyperparathyroidism – Jan 2011
- Need 40 ng of vitamin D to have proper PTH levels – May 2011
- Primary Hyperparathyroidism perfectly predicted with a Vitamin D- Based nomogram – Nov 2011
- Perhaps optimal bioavailable vitamin D level is the same in blacks and whites – March 2012
3469 visitors, last modified 19 Oct, 2019,