Trial reportEuropean journal of nutrition2019
Differences in the dietary requirement for vitamin D among Caucasian and East African women at Northern latitude.
Trial report in European journal of nutrition, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 2 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
17 citing papers in PubMed, 2 syntheses or guidelines pooled it, 28 citations in OpenAlex.
- Vitamin D deficiency and immune health in polar populations: a systematic review and hypothesis-driven narrative analysis.Immunologic research · 2025Pooled it
- Individual participant data (IPD)-level meta-analysis of randomised controlled trials to estimate the vitamin D dietary requirements in dark-skinned individuals resident at high latitude.European journal of nutrition · 2022Pooled it
- Basal Vitamin D Status and Supplement Dose Are Primary Contributors to Maternal 25-Hydroxyvitamin D Response to Prenatal and Postpartum Cholecalciferol Supplementation.The Journal of nutrition · 2021Trial
- Vitamin D-Parathyroid Hormone-Fibroblast Growth Factor 23 Axis and Cardiac Remodeling.American journal of cardiovascular drugs : drugs, devices, and other interventions · 2025Review
- The Efficacy of Vitamins in the Prevention and Treatment of Cardiovascular Disease.International journal of molecular sciences · 2024Review
- Article
- Review
- Understanding the Role of Vitamin D in Heart Failure.Reviews in cardiovascular medicine · 2023Review
- Effects of vitamin D supplementation on the regulation of blood lipid levels in prediabetic subjects: A meta-analysis.Frontiers in nutrition · 2023Review
- An Update on the Effects of Vitamin D on the Immune System and Autoimmune Diseases.International journal of molecular sciences · 2022Review
- Metabolic Bone Diseases and New Drug Developments.Biomolecules & therapeutics · 2022Review
- Clinical Practice in the Prevention, Diagnosis and Treatment of Vitamin D Deficiency: A Central and Eastern European Expert Consensus Statement.Nutrients · 2022Review
- Vitamin D status in women with dichorionic twin pregnancies and their neonates: a pilot study in China.BMC pregnancy and childbirth · 2021Observational
- Positive impact on vitamin D related lifestyle of medical advice in pregnant Somali-born women and new mothers: a mixed method study in Swedish primary care.BMC public health · 2021Article
- Individual participant data (IPD)-level meta-analysis of randomised controlled trials among dark-skinned populations to estimate the dietary requirement for vitamin D.Systematic reviews · 2019Article
- Summary Outcomes of the ODIN Project on Food Fortification for Vitamin D Deficiency Prevention.International journal of environmental research and public health · 2018Review
- Differences in RAAS/vitamin D linked to genetics and socioeconomic factors could explain the higher mortality rate in African Americans with COVID-19.Therapeutic advances in cardiovascular diseaseArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
10 authors at 3 institutions in 3 countries.
Funding
Abstract
contextCurrent vitamin D recommendations have been established based on an assumption that there are no differences between Caucasian and other ethnic/racial groups in terms of vitamin D requirements. This assumption, largely made due to the absence of data, is a key knowledge gap identified by a number of authorities.
objectiveTo test whether the distribution of dietary requirements for maintaining winter serum 25-hydroxyvitamin D [25(OH)D] concentrations ≥ 30 nmol/L (a priority threshold linked to vitamin D deficiency prevention) differ between Caucasian and Somali women living at northerly latitude.
methodsWe used data from a 5-month, winter-based, vitamin D
resultsUsing a model which adjusted for baseline 25(OH)D, age, and BMI, the estimated vitamin D intake that maintained serum 25(OH)D ≥ 30 nmol/L in 97.5% of Caucasian and Somali women was 8 and 18 µg/day, respectively. Ethnic differences were also evident at 40 and 50 nmol/L serum 25(OH)D thresholds.
conclusionThe present study adds further evidence that ethnic differences in the dietary requirement for vitamin D do exist and that dose-response vitamin D intervention studies are required in at-risk target populations specified by ethnicity.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.