Trial reportJournal of endocrinological investigation2000
Sunlight exposure and vitamin D deficiency in Turkish women.
Trial report in Journal of endocrinological investigation, 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 79 papers, 1 of them a synthesis that pooled it.
What it found
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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
79 citing papers in PubMed, 1 synthesis or guideline pooled it, 273 citations in OpenAlex.
- A Systematic Review and Meta-Analysis of Vitamin D Status of Patients with Severe Obesity in Various Regions Worldwide.Obesity facts · 2023Pooled it
- Effect of Vitamin D Supplementation on the Regulation of Blood Pressure in Iranian Patients with Essential Hypertension: A Clinical Trial.Advances in experimental medicine and biology · 2021Trial
- Effects of different doses of oral cholecalciferol on serum 25(OH)D, PTH, calcium and bone markers during fall and winter in schoolchildren.European journal of clinical nutrition · 2010Trial
- Vitamin D Status and Routine Laboratory Data-Derived 25(OH)D Distributional Benchmarks in Adults from Şanlıurfa, Türkiye: Age, Sex, and Seasonal Variation.Diagnostics (Basel, Switzerland) · 2026Article
- Vitamin D insufficiency in pregnant women from Lebanon: prevalence and key predictors.Reproductive health · 2025Article
- Knowledge and Predictors of Vitamin D Awareness Among Greek Women: A Cross-Sectional Study.Diseases (Basel, Switzerland) · 2025Article
- Determining correlation between changes in blood pressure and vitamin D levels: Analyzing influencing factors in hypertensive adults at Family Medicine Clinics.Journal of family medicine and primary care · 2025Article
- Prevalence of vitamin D deficiency and related factors among adults in Tokat province, Türkiye: a community-based cross-sectional study.Acta biochimica Polonica · 2025Article
- UV index-based model for predicting synthesis of (pre-)vitamin D3 in the mediterranean basin.Scientific reports · 2024Article
- Vitamin D and Sarcopenia in the Senior People: A Review of Mechanisms and Comprehensive Prevention and Treatment Strategies.Therapeutics and clinical risk management · 2024Review
- Vitamin D3 and omega-3 polyunsaturated fatty acids have beneficial effects on fracture union in an experimental rat model.Joint diseases and related surgery · 2024Article
- Does Decreased Vitamin D Level Trigger Bipolar Manic Attacks?Behavioral sciences (Basel, Switzerland) · 2023Article
- Review
- Influences of Vitamin D and Iron Status on Skeletal Muscle Health: A Narrative Review.Nutrients · 2022Review
- Effect of Vitamin D Supplementation on the Fetal Growth Rate in Pregnancy Complicated by Fetal Growth Restriction.Children (Basel, Switzerland) · 2022Article
- Prevalence and Predictors of Vitamin D Inadequacy: A Sample of 2,547 Patients in a Mediterranean Country.Cureus · 2021Article
- Vitamin D Status in Children in Greece and Its Relationship with Sunscreen Application.Children (Basel, Switzerland) · 2021Article
- Impact evaluation of the efficacy of different doses of vitamin D supplementation during pregnancy on pregnancy and birth outcomes: a randomised, controlled, dose comparison trial in Pakistan.BMJ nutrition, prevention & health · 2021Article
- Serum levels of vitamin D and tumour necrosis factor-alpha in adults with metabolic syndrome.European journal of clinical and experimental medicine · 2021Article
- Vitamin D status in the adult population of Bursa-Turkey.The European journal of general practice · 2020Article
19 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Vitamin D is an essential steroid involved in bone metabolism, cell growth, differentiation, and regulation of the minerals in the body. The main sources of this vital vitamin are adequate diet and photosynthesis in the skin. The aim of this study was to investigate the efficiency of vitamin D synthesis in 48 premenopausal women (14-44 years) in relation to three different types of dressing in summer. Women in the first group (Group I) dressed in a style which exposed the usual areas of the skin to sunlight; women in the second group (Group II wore traditional clothing with the skin of the hands and face uncovered, while the third group (Group III) dressed in traditional Islamic style, covering the whole body including hands and face. Serum 25OHD levels of Group I, Group II, and Group III were 56+/-41.3 nmol/l, 31.9+/-24.4 nmol/l, 9+/-5.7 nmol/l, respectively (Group I vs Group III, p<0.001; Group II vs Group III, p<0,03; Group I vs Group II, p>0.05). Vitamin D levels were low in 44 percent of the Group I and 60% of the Group II, which suggested that sun exposure of skin areas of hands and face may partially provide vitamin D synthesis, but may not be enough to eliminate vitamin D deficiency. All the patients in group III had vitamin D levels below normal. This study emphasizes the necessity of vitamin D fortification of food even in a sunny country where some people may not be exposed to sunlight because of inappropriate clothing or an indoor-life.
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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.