Diet, Physical Activity, and UV Protection Comprehensively Influenced Vitamin D Status: A Cross-Section Study of Chinese College Students

2021 ◽  
Author(s):  
Yingyi Luo ◽  
Chunbo Qu ◽  
Rui Zhang ◽  
Jingyi Zhang ◽  
Dan Han ◽  
...  
Keyword(s):  
Physical Activity ◽  
College Students ◽  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Serum Vitamin ◽  
Uv Protection ◽  
Vitamin D Status ◽  
Outdoor Activity ◽  
Chinese College Students ◽  
Serum Vitamin D

Abstract Background: Vitamin D deficiency is a major public health problem in China while there are seldom reports about vitamin D nutrition status in Chinese college students. The purpose of this study is to explore the vitamin D status of the college freshmen who came from different provinces of China and to comprehensive analyze the effects of diet, physical activity, and UV protection on serum vitamin D levels. Methods: Totally 1,667 freshmen who came from 26 provinces, autonomous districts or municipalities, were recruited into this study. An online questionnaire was used to collect the information including demographic status, diet habit, physical activity, and UV protection of the participants. Serum 25(OH)D3 concentrations were measured using a liquid chromatograph mass spectrometer. Multivariate linear regression analyses were used to explore the comprehensive influence of diet, physical activity, and UV protection on serum 25(OH)D3 levels. Results: The average age of the subjects was18.55±0.90 years, with 23.0% male and 77.0% female. The mean serum 25(OH)D3 was 18.06±6.34ng/mL and the proportion of vitamin D deficiency and insufficiency was 67.5% and 27.8%, respectively. Multivariate linear regression indicated that milk and yogurt intake≥200mL/d, calcium or vitamin D supplements and average time of outdoor activity ≥60 min/day were positively linked to higher serum vitamin D while sweets intake ≥10g/d and higher UV protection index were negatively influenced serum vitamin D after adjusted for age, gender, students’ original residence, latitudes and longitude. Conclusions: Vitamin D deficiency is an important health problem in Chinese college students. Milk and yogurt intake and outdoor activity should be encouraged while sweets intake should be limited for preventing vitamin D deficiency. Public health policies should consider well-balanced guidelines on UV protection and vitamin D food fortification or supplementation.

scholarly journals Association of vitamin D with adiposity measures and other determinants in a cross-sectional study of Cypriot adolescents

2014 ◽  
Vol 18 (1) ◽  
pp. 112-121 ◽  
Author(s):  
Ourania Kolokotroni ◽  
Anna Papadopoulou ◽  
Panayiotis K Yiallouros ◽  
Vasilios Raftopoulos ◽  
Christiana Kouta ◽  
...  
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Reference Group ◽  
Serum Vitamin ◽  
Sun Exposure ◽  
Dietary Vitamin ◽  
Vitamin D Status ◽  
Fat Percentage ◽  
Cross Sectional ◽  
Serum Vitamin D

AbstractObjectiveTo assess vitamin D status among Cypriot adolescents and investigate potential determinants including BMI and body fat percentage (BF%).DesignParticipants had cross-sectional assessments of serum vitamin D, physical activity, dietary vitamin D intake and sun exposure. Linear and logistic regression models were used to explore the associations of vitamin D with potential predictors.SettingHospitals, Cyprus, November 2007–May 2008.SubjectsAdolescents (n 671) aged 16–18 years.ResultsMean serum vitamin D was 22·90 (sd 6·41) ng/ml. Only one in ten children had sufficient levels of vitamin D (≥30 ng/ml), while the prevalence of vitamin D deficiency (12–20 ng/ml) and severe deficiency (<12 ng/ml) was 31·7 % and 4·0 %, respectively. Lower vitamin D was associated with winter and spring season, female gender, reduced sun exposure in winter and darker skin. Participants with highest BMI and BF% when compared with a middle reference group had increased adjusted odds of vitamin D insufficiency (OR = 3·00; 95 % CI 1·21, 7·45 and OR = 5·02; 95 % CI 1·80, 13·97, respectively). A similar pattern, although not as strong, was shown for vitamin D deficiency with BF% (OR = 1·81; 95 % CI 1·04, 3·16) and BMI (OR = 1·51; 95 % CI 0·85, 2·67). Participants in the lowest BMI and BF% groups also displayed compromised vitamin D status, suggesting a U-shaped association.ConclusionsVitamin D deficiency in adolescence is very prevalent in sunny Cyprus, particularly among females, those with darker skin and those with reduced sun exposure in winter. Furthermore, vitamin D status appears to have a U-shaped association with adiposity measures.

Vitamin D Deficiency in Patients With Idiopathic and Traumatic Osteochondritis Dissecans of the Talus

2019 ◽  
Vol 40 (11) ◽  
pp. 1309-1318 ◽  
Author(s):  
Lukas Fraissler ◽  
Sebastian Philipp Boelch ◽  
Thomas Schäfer ◽  
Matthias Walcher ◽  
Jörg Arnholdt ◽  
...  
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Osteochondritis Dissecans ◽  
Serum Vitamin ◽  
Vitamin D Status ◽  
Foot And Ankle ◽  
Level Of Evidence ◽  
Serum Vitamin D ◽  
Vitamin D Levels ◽  
Significant Difference

Background: Low vitamin D levels are common in patients with foot and ankle disorders. We have previously demonstrated that juveniles diagnosed with osteochondritis dissecans (OCD) have a high prevalence of vitamin D deficiency. Moreover, there is evidence that OCD might be related to vitamin D deficiency in general. However, whether or not hypovitaminosis D is associated with OCD of the talus has yet to be elucidated. Methods: The aim of this study was to determine serum vitamin D levels [25(OH)D] of patients diagnosed with traumatic and idiopathic OCD of the talus. The vitamin D status of patients was measured and correlated to age, sex, season, etiology, laterality, degree of disease, and nicotine abuse. Moreover, parathyroid hormone and serum calcium levels of patients were obtained to assess for severe vitamin D deficiency and secondary hyperparathyroidism. Between January 2015 and December 2017, 65 patients with a mean age of 38.9 years and a total of 68 lesions were identified. Results: In total, 75.4% of patients had low vitamin D levels with a mean overall 25(OH)D level of 24.2 ng/mL. Specifically, 35.4% of patients were vitamin D deficient; another 40% were vitamin D insufficient, and only 24.6% of patients presented with sufficient vitamin D levels. Statistical analysis showed no significant difference comparing vitamin D levels of patients with idiopathic OCD to patients with traumatic OCD. Conclusion: We could not find any significant differences in the vitamin D status of patients with OCD of the talus compared with patients with foot and ankle disorders in general. However, we found that vitamin D deficiency was frequent in patients presenting with traumatic and idiopathic OCD of the talus. We believe it might be beneficial to routinely assess and treat the vitamin D status of patients. Level of Evidence: Level III, retrospective comparative study.

scholarly journals Study of Serum Vitamin D Level in Different Socio-Demographic Population - A Pilot Study

2017 ◽  
Vol 19 (1) ◽  
pp. 22-29 ◽  
Author(s):  
Homayra Tahseen Hossain ◽  
Quazi Tarikul Islam ◽  
Md Abul Kashem Khandaker ◽  
HAM Nazmul Ahasan
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Serum Vitamin ◽  
Adult Patients ◽  
Vitamin D Status ◽  
College Hospital ◽  
Cross Sectional ◽  
Serum Vitamin D ◽  
Vitamin D Levels ◽  
Study Population

Background: Recently, we see in our clinical practice that many patients who are coming with generalized body aches and pains and diagnosed as fibromyalgia or chronic fatigue, not adequately responding to treatment. When their vitamin D level was done, it was found to be low and correction of their low vitamin D level improved their symptoms dramatically. Despite abundant sunshine in Bangladesh, allowing vitamin D synthesis all the year round, why our people are developing hypovitaminosis D inspired us to do this current study. Our present study is designed to estimate the prevalence of vitamin D deficiency among adult patients presented with aches & pains as well as to study the association of low vitamin D levels with different socio-demographic parameters.Methods: A cross sectional observational study was conducted among 212 adult patients aged 18 years and above presented with generalized body aches and pains, attended both outpatient and inpatient departments of Popular Medical College Hospital during the period of March’16- August’16 ( 6 months). Association between vitamin D status & the individual specific variables was statistically analyzed.Results: The prevalence of vitamin D deficiency among the study population was found to be100% in all age groups. Among 212 study population, 73.6% were female (n=156) & 26.4% were male (n=56). Mean Vitamin D level among male was 14.29 (SD 4.68) & among female was 12.64 (SD 4.74). The factors associated with severely deficient Vitamin D level were female sex, urban population, &obesity. It is alarming that 64.2% of our study population were totally unaware about the importance of sun exposure.Conclusions: Vitamin D status was associated with a number of socio-demographic variables. Knowledge of these variables may improve targeted education and public health initiatives.J MEDICINE Jan 2018; 19 (1) : 22-29

Vitamin D status among patients with drug-resistant and non-drug-resistant epilepsy

2020 ◽  
Vol 90 (3-4) ◽  
pp. 205-209
Author(s):  
Pierre Jésus ◽  
Bertrand Godet ◽  
Lucile Darthou-Pouchard ◽  
Philippe Fayemendy ◽  
Françoise Abdallah-Lebeau ◽  
...  
Keyword(s):  
Vitamin D ◽  
Drug Resistance ◽  
Vitamin D Deficiency ◽  
Fat Mass ◽  
Serum Vitamin ◽  
Anthropometric Measurements ◽  
Drug Resistant ◽  
Vitamin D Status ◽  
Serum Vitamin D ◽  
Severe Deficiency

Abstract. Background & Aims: Epilepsy affects nearly 70 million people worldwide. Vitamin D deficiency may influence the balance of certain epilepsies. The purpose of this study was to determine the vitamin D status and anthropometric measurements of people with epilepsy (PWE), according to their pharmacosensitivity. Methods: Forty-six PWE, with or without drug resistance, underwent nutritional assessment after giving consent. Weight, body mass index (BMI), triceps skinfold thickness (TSF), fat mass (FM) and free fat mass (FFM) by bioelectrical impedance analysis were measured. Serum vitamin D was determined without supplementation. Deficiency was defined as a level < 30 ng/mL. Statistical analysis involved Student t test, ANOVA and Chi2. Results: Patients were aged 44.5 ± 14.3 years, with 60.9% of drug-resistance. BMI was 28.7 ± 7.0, 2.2% were malnourished and 30.4% obese according to the BMI. The average vitamin D level was 15.3 ± 9.9 ng/mL, with 87.0% of deficiency, and 40.0% of severe deficiency (<10 ng/mL). The TSF was higher in drug-resistant cases (p = 0.03). There was no link between drug resistance and anthropometric measurements, FM, FFM or vitamin D concentration. Conclusions: Although limited in size, this study showed that PWE are more often obese. Vitamin D deficiency is more common than in the general population, with a much higher prevalence of severe deficiency.

scholarly journals STUDY TO EVALUATE THE VITAMIN D SCENARIO IN AN INDIAN POPULATION

2021 ◽  
pp. 1-2
Author(s):  
Firdushi Begum ◽  
Papori Borah
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Clinical Laboratory ◽  
Tertiary Care ◽  
Serum Vitamin ◽  
Institute Of Medicine ◽  
Vitamin D Status ◽  
Endocrine Society ◽  
Serum Vitamin D ◽  
Vitamin D Levels

Introduction : Till the 20th century deficiency of vitamin D which is synthesized in the skin upon exposure to UVB light was largely unknown. But today vitamin D deficiency has taken an epidemic form and is linked with many disease conditions. Several studies have put forward a very high prevalence of vitamin D deficiency among Indians of all age groups. Aims and objectives : To study the vitamin D status of people visiting a tertiary care centre in India. Materials and Methods : This is a prospective observational study conducted in the Biochemistry section of Central Clinical Laboratory of Gauhati Medical College & Hospital (GMCH). All the vitamin D reports generated in the laboratory for a period of 9 months were recorded and analysed to estimate the prevalence. Similar to other vitamin D studies, 20ng/ml was taken as the cut-off for vitamin D deficiency, 30ng/ml for insufficiency, and 30-100ng/ml as the normal vitamin D range. Results and Observations : In this study Vitamin D data of 1000 patients admitted in GMCH was analysed. Of them females outnumbered males (68.7% vs 31.3%). Of the 1000 vitamin D reports analysed 51.9% were found to be in the insufficient range, followed by 30.1% in the normal range. In 17.5% vitamin D levels were found to be deficient Vitamin D status was found to be lower in females as compared to males. 86.75% of females were either vitamin D deficient or insufficient and 71.88% of males were either deficient or insufficient. Conclusion : In this study 17.5% of study subjects had vitamin D level <20ng/ml, which may be considered as deficient, as per the Institute of Medicine(IOM) which considers a serum vitamin D value of 20 ng/ml as optimal. According to the U.S. Endocrine Society 30 ng/ml is optimal. Due to this variation the recommended daily intakes of this nutrient also vary.

scholarly journals Vitamin D Status in Dupuytren’s Disease: Association with Clinical Status and Vitamin D Receptor Expression

2020 ◽  
Author(s):  
Jin Woo Park ◽  
Sung Taeck Kim ◽  
Kyu Sang Lee ◽  
Hyun Sik Gong
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Vitamin D Receptor ◽  
Serum Vitamin ◽  
Receptor Expression ◽  
Healthy Controls ◽  
Vitamin D Status ◽  
Serum Vitamin D ◽  
Vitamin D Levels ◽  
Tgf Β1

Abstract BackgroundDupuytren’s disease(DD) is a progressive fibroproliferative condition involving contractures of the fascia of the palm. Up to now, there are no relevant investigations on patients with DD in case of serum vitamin D deficiency. We hypothesized that transforming growth factor-β1 (TGF-β1) is increased in patients with DD in consequence of vitamin D deficiency, thereby leading to myofibroblast differentiation and subsequent progression of contractures. MethodsThe study’s aim was to analyze serum vitamin D levels and explore possible clinical and immunohistochemical correlates with vitamin D concentrations in a group of patients with DD. Vitamin D levels were measured in all DD patients and healthy controls. In the patient group, clinical characteristics were compared between vitamin D deficient and non-deficient subgroups. Diseased palmar fascia samples were obtained from 14 patients undergoing fasciectomy for DD. Correlations between vitamin D levels and vitamin D receptor(VDR), TGF-β1 expression levels in collected fascia samples were evaluated. ResultsVitamin D concentrations were significantly lower in patients than healthy controls. In addition, total extension deficit of involved fingers was higher in vitamin D deficient patients. Moreover, a positive correlation was found between vitamin D levels and expression of VDR in pathologic fascia in patients undergoing fasciectomy for contracture. Serum vitamin D levels were found to be low in DD patients. Expression of VDR was lower in the vitamin D deficient group.ConclusionsThe results suggest a potential link between vitamin D status and DD but causation is not yet established. The potential role of vitamin D and its interaction with VDR and the TGF-β1 signaling pathway in the pathogenesis of DD needs to be explored further.

scholarly journals Is There Pandemic Vitamin D Deficiency in the Black Population? A Review of Evidence

2015 ◽  
Vol 9 (1) ◽  
pp. 5-11 ◽  
Author(s):  
Ria S. Roberts ◽  
Fafa Huberta Koudoro ◽  
Mark S. Elliott ◽  
Zhiyong Han
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Active Form ◽  
Serum Vitamin ◽  
Black Population ◽  
Biologically Active ◽  
Total Serum ◽  
Vitamin D Status ◽  
Mineral Density ◽  
Serum Vitamin D

Although 1,25-dihydroxyvitamin D [1,25(OH)2D] is the biologically active form of vitamin D, measurement of the total serum 25-hydroxyvitamin D [25(OH)D] level is the gold standard used to define vitamin D status. Currently, it is widely accepted that serum 25 (OH) D levels below 20 ng/ml defines vitamin D deficiency. According to this definition, there appears to be pandemic vitamin D deficiency in the Black population. However, there is no evidence of higher-than-normal rates of common complications and symptomology of true vitamin D deficiency in the Black population. What is going on? We researched the MEDLINE databases to find studies, from 1967 to present, that directly compare between Blacks and Caucasians the following: serum vitamin D level, serum calcium level, serum parathyroid hormone level, bone mineral density and health, and non-skeletal risks associated with vitamin D deficiency. The available studies consistently show that Blacks tend to have serum 25(OH)D levels in the deficient range while their serum 1,25(OH)D level is similar to, if not even slightly higher than that of Caucasians, and that the serum Ca2+ level in Blacks is virtually identical to that in Caucasians. Therefore, it appears that the serum 25(OH)D level is not the best marker of vitamin D sufficiency or deficiency in Blacks. In the future, clinical evaluation of the vitamin D status in the Black population needs to consider other serum biomarkers such as 1,25(OH)2D and/or bioavailable 25(OH)D.

Serum vitamin D status does not correlate with the severity of obstructive sleep apnea in male adults: A controlled study design with minimized factors influencing serum vitamin D levels

2020 ◽  
Vol 90 (5-6) ◽  
pp. 470-476 ◽  
Author(s):  
Ozge Yagcioglu Yassa ◽  
Saime Fusun Domac ◽  
Gulay Kenangil
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Significant Relationship ◽  
Serum Vitamin ◽  
Controlled Study ◽  
Vitamin D Status ◽  
Anthropometric Measures ◽  
Serum Vitamin D ◽  
Vitamin D Levels ◽  
Significant Difference

Abstract. Observational studies performed in homogeneous groups to objectively investigate the cause and effect relationship between vitamin D deficiency and sleep disorders are scarce. In this study, it was aimed to analyze the relationship between the severity of OSAS and vitamin-D levels among the participants whose features affecting serum vit-D levels were minimised. Serum 25-OH vitamin-D levels in 121 OSAS Male patients diagnosed by polysomnography without any systemic disease or vitamin-D supplement that may effect the vitamin-D metabolism were measured. The study was conducted in winter (latitude: 41°). Anthropometric measures and biochemical tests were also performed. The distribution of vitamin-D levels was determined as severe deficiency, deficiency, insufficiency and sufficiency. Apnea-hypopne index (AHI) < 5 was considered as a control group. Patients were categorized into four groups according to AHI as control, mild, moderate and severe. The groups were similar in terms of age, BMI, lipid profile, serum calcium, anthropometric measures and smoking. There was no significant difference in the distribution of vitamin-D levels between the patient and control groups and also within OSAS subgroups (p = 0.57, p = 0.86, respectively). Odds ratio to have OSAS in patients with vitamin-D deficiency was found as 0.745 (95 %CI: 0.33–1.7). Multinominal regression analysis showed no significant relationship between the OSAS severity and the extent of vitamin-D status. Correlation analysis showed no significant relationship between vitamin-D and AHI (r = 0.017, p = 0.877). Vitamin-D status does not alter the severity of OSAS. Vitamin-D deficiency might be the result of lifestyle changes due to OSAS rather than a cause.

scholarly journals Vitamin D Deficiency and Increased Risk of Bladder Carcinoma: A Meta-Analysis

2015 ◽  
Vol 37 (5) ◽  
pp. 1686-1692 ◽  
Author(s):  
Hui Zhang ◽  
Hui Zhang ◽  
Xiuhua Wen ◽  
Yonggang Zhang ◽  
Xueli Wei ◽  
...  
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Bladder Carcinoma ◽  
Meta Analysis ◽  
Serum Vitamin ◽  
Vitamin D Status ◽  
Serum Vitamin D ◽  
Increased Risk ◽  
Vitamin D Levels ◽  
Carcinoma Risk

Background/Aims: Vitamin D status in relation to bladder carcinoma risk was still inconsistent. This study was carried out to evaluate the relationship between vitamin D status and bladder carcinoma risk through a meta-analysis approach. Methods: Pubmed, Web of Science, CNKI, and Embase were searched systemically to find eligible studies from the earliest available date to April 16, 2015. The search terms “vitamin D”, “25-hydroxyvitamin D”, “bladder cancer” or “bladder carcinoma” were used to retrieve relevant studies. The exposure of interest was intake of vitamin D or serum vitamin D levels, and the outcome of interest was bladder carcinoma incidence or mortality. The pooled risk ratio (RR) values and their 95%CIs were calculated through meta-analysis. Results: Seven studies with a total of 62,141 participants met the inclusion criteria and were finally included into the meta-analysis. There was no heterogeneity among those included studies (I2 = 0%, P = 0.53). The pooled RR of bladder carcinoma for the lowest category versus the highest category of vitamin D was 1.34 (95% CI 1.17-1.53, P < 0.0001). Sensitivity analysis by omitting one study by turns showed all the pooled RRs were statistically significant. Meta-analysis of 5 studies reporting outcomes of serum vitamin D levels also showed that the low serum vitamin D level was associated with increased risk of bladder carcinoma (RR = 1.32, 95%CI 1.15-1.52, P = 0.0001). No obvious risk of publication bias was observed. Conclusion: Vitamin D deficiency is associated with increased risk of bladder carcinoma in present study.

scholarly journals Evaluation of Quality of life, Physical Activity and Nutritional Profile of Postmenopausal Women with and without Vitamin D Deficiency

2017 ◽  
Vol 39 (07) ◽  
pp. 337-343 ◽  
Author(s):  
Adriele Delchiaro ◽  
Flávia Oliveira ◽  
Camila Bonacordi ◽  
Bruna Chedid ◽  
Giuliana Annicchino ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Physical Activity ◽  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Postmenopausal Women ◽  
Serum Vitamin ◽  
Nutritional Profile ◽  
Serum Vitamin D ◽  
Vitamin D Levels

Introduction Vitamin D deficiency is associated with various diseases. Prevalent in Brazil, it can result from inadequate lifestyle habits. Objective To demonstrate that postmenopausal women with vitamin D deficiency have worse quality of health, expressed as worse quality of life, lower levels of physical activity, and worse nutritional profile. Methods Postmenopausal women answered questionnaires about physical activity and quality of life, provided a 24-hour food record, and had serum vitamin D levels measured. Results Among the more active women, those who perform a daily average of one hour of physical activity had vitamin D levels above 20 ng/mL (76.9%), and those, which expose themselves to sunlight, had vitamin D levels above 30 ng/mL (34.6%). Meanwhile the percentages for the women who are less physically active and less exposed to sunlight were 42.2% and 8.9% respectively. Being more active and more exposed to sunlight resulted in a lower fat percentage. Serum vitamin D levels were not correlated with quality of life. Conclusion Walking and gardening increased serum vitamin D levels and decreased the percentage of body fat. The limitations of the study prevented the impact of 25-hidroxyvitamin D on the quality of life and nutritional aspects of the women from being evaluated.

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