ArticlePublic health nutrition2017
Weight and skin colour as predictors of vitamin D status: results of an epidemiological investigation using nationally representative data.
Article in Public health nutrition, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 5 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
12 citing papers in PubMed, 5 syntheses or guidelines pooled it.
- What is the impact of vitamin D supplementation on glycemic control in people with type-2 diabetes: a systematic review and meta-analysis of randomized controlled trails.BMC endocrine disorders · 2023Pooled it
- Vitamin D and SARS-CoV2 infection, severity and mortality: A systematic review and meta-analysis.PloS one · 2022Pooled it
- Effect of Vitamin D Supplementation on Glycemic Control in Prediabetes: A Meta-Analysis.Nutrients · 2021Pooled it
- The Effect of Vitamin D Supplementation on Glycemic Control in Type 2 Diabetes Patients: A Systematic Review and Meta-Analysis.Nutrients · 2018Pooled it
- The effect of vitamin D supplementation on glucose metabolism in type 2 diabetes mellitus: A systematic review and meta-analysis of intervention studies.Journal of diabetes and its complications · 2017Pooled it
- Beyond bones, vitamin D as a sunshine hormone in type 2 diabetes mellitus and its complications.iScience · 2026Review
- Risk factors associated with low bone mineral density and childhood osteoporosis in a population undergoing skeletal growth: a cross-sectional analytic study.Frontiers in endocrinology · 2025Article
- High Rates of Vitamin D Deficiency in Acute Rehabilitation Patients.Archives of rehabilitation research and clinical translation · 2021Article
- Vitamin D and COVID-19: evidence and recommendations for supplementation.Royal Society open science · 2020Article
- Association between vitamin D deficiency and common variants of Vitamin D binding protein gene among Mexican Mestizo and indigenous postmenopausal women.Journal of endocrinological investigation · 2020Article
- The effect of vitamin D supplementation on the glycemic control of pre-diabetic Qatari patients in a randomized control trial.BMC nutrition · 2019Article
- Vitamin D research and public health nutrition: a current perspective.Public health nutrition · 2017Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveCurrent US dietary recommendations for vitamin D vary by age. Recent research suggests that body weight and skin colour are also major determinants of vitamin D status. The objective of the present epidemiological investigation was to clarify the role of age as a predictor of vitamin D status, while accounting for body weight and skin colour, among a nationally representative sample.
designWe calculated the mean serum 25-hydroxyvitamin D levels for the US population by age and weight, as well as by weight and race/ethnicity group. Multiple regression analyses were utilized to evaluate age and weight as predictors of vitamin D status: serum 25-hydroxyvitamin D levels with age alone, age and body weight, and age, body weight and their two-way interaction were modelled for the entire sample and each age subgroup. Graphical data were developed using B-spline non-linear regression.
settingNational Health and Nutrition Examination Survey (31 934 unweighted cases). SUBJECTS: Individuals aged 1 year and older.
resultsThere were highly significant differences in mean vitamin D status among US residents by weight and skin colour, with those having darker skin colour or higher body weight having worse vitamin D status. Although a significant factor, the impact of age on vitamin D status was notably less than the impact of body weight.
conclusionsVitamin D status varied predominantly by body weight and skin colour. Recommendations by nutritionists for diet and supplementation needs should take this into account if vitamin D-related health disparities are to be meaningfully reduced across the USA.
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.