Prevalence Of Vitamin D Deficiency Research Articles

Prevalence, Outcomes, and Complications of Vitamin D Deficiency Among Patients with Multiple Myeloma: Nationwide Burden of Disease.

Multiple myeloma (MM), constituting 10% of hematological malignancies, poses significant morbidity and mortality, especially with skeletal involvement. Bisphosphonate use in MM may lead to severe hypocalcemia due to vitamin D deficiency (VDD), exacerbating bone marrow plasma cell burden. We aimed to assess VDD prevalence and its impact on outcomes in MM patients. A retrospective cross-sectional analysis (2008-2018) of nationwide inpatient data identified adult MM hospitalizations with VDD using ICD-10-CM codes. Univariate and multivariate analyses were conducted to evaluate prevalence, demographics, and outcomes, with significance set at p < 0.05. Among 330,175 MM hospitalizations, 3.48% had VDD. VDD was more prevalent among 50-75-year-olds (61.72% vs. 59.74%), females (53.36% vs. 44.34%), Blacks (23.34% vs. 22.94%), Whites (65.84% vs. 65.79%), higher income brackets (26.13% vs. 23.85%), and those with comorbidities like hypertension (71.12% vs. 69.89%), dyslipidemia (42.47% vs. 34.98%), obesity (13.63% vs. 10.19%), and alcohol abuse (1.61% vs. 1.34%). In regression analysis, VDD in MM patients correlated with higher morbidity (aOR: 1.24, 95%CI: 1.14-1.36) and major disability (aOR: 1.26, 95%CI: 1.20-1.30). MM patients with VDD exhibit worse outcomes, underscoring the importance of recognizing and managing VDD promptly. Further prospective studies are needed to validate our findings and explore the impact of vitamin D supplementation on MM patient outcomes.

Abstract P427: Vitamin D Deficiency and Cardiovascular Disease (CVD) Risk Factors in American Indian Adolescents: The Strong Heart Family Study

Introduction: Vitamin D deficiency (VDD) may be associated with CVD risk factors, such as obesity, diabetes, and dyslipidemia and is amenable to successful interventions through changes in diet and vitamin supplementation. Aims: To describe the prevalence of VDD among American Indian adolescents from SHFS and determine its association with obesity, diabetes, and dyslipidemia incidence in follow-up exams. Methods: We included adolescents (&lt;20 years) from the SHFS, who had serum vitamin D measured on stored samples collected at the baseline examination, 2001-2003 (n=307). We defined VDD as ≤20ng/mL and obesity as baseline Body Mass Index (BMI) ≥95%, follow-up BMI ≥30kg/m 2 , waist-hip-ratio (WHR) ≥0.9 for males, or WHR ≥0.85 for females. Diabetes was defined as measured fasting plasma glucose level ≥126 mg/dL or taking hypoglycemic medication. We defined dyslipidemia as abnormal total cholesterol, LDL-C, HDL-C, non-HDL-C, triglycerides, or taking medication. We used log binomial generalized estimating equations to determine if the prevalence or incidence of obesity, diabetes, or dyslipidemia differed according to VDD, while controlling for age, gender, and center (Arizona, Oklahoma, or Dakotas). Results: VDD prevalence was 50.8% in AI adolescents, and it was associated with the prevalence of BMI≥95%, high WHR, and dyslipidemia. By the first follow-up, 28.8% developed a BMI≥30kg/m 2 , 58.8% developed high WHR, 6.2% developed diabetes, and 62.6% developed dyslipidemia. By the second follow-up, 11.4% developed diabetes. The risk of high WHR (RR=1.28, CI=1.04-1.58, follow-up=5.8 years), and the risk of diabetes (RR=2.32, CI=1.05-5.12, follow-up=13.3 years) was higher in those with baseline VDD while controlling for covariates (Table 1). Conclusions: These data suggest that VDD in adolescence may contribute to the development of high WHR and diabetes later in life, which are strongly associated with CVD. Thus, the results of this analysis may provide a critical step toward reducing or controlling CVD at an early age.

A Fracture Liaison Service to Address Vitamin D Deficiency for Patients Hospitalized for Osteoporotic Fracture.

Addressing vitamin D deficiency (VDD) is important for fracture secondary prevention. To explore the function of a fracture liaison service (FLS) to address VDD. An observational study of patients admitted to the Massachusetts General Hospital with fractures between January 1, 2016, and October 31, 2023, cared for by the FLS. Ergocalciferol 50 000 international units (50ku-D2) oral daily for 3 to 7 days. VDD prevalence. Efficacy of inpatient daily 50ku-D2 in raising serum 25-hydroxyvitamin D (25OHD) levels. Of the 2951 consecutive patients, 724 (24.53%) had VDD (defined by 25OHD ≤ 19 ng/mL). Men (252/897, or 28.09%) were more likely than women (472/2054, or 22.98%) to have VDD (P = .003). VDD was seen in 41.79% (117/280), 24.41% (332/1360), and 20.98% (275/1311) of patients of aged ≤59, 60 to 79, and ≥80 years, respectively (P < .00001). Of the 1303 patients with hip fractures, 327 (25.09%) had VDD, which was associated with a longer length of stay (8.37 ± 7.35 vs 7.23 ± 4.78 days, P = .009) and higher trend of 30-day-readmission rate (13.63% vs 18.35%, P = .037). In a cohort of 32 patients with complete data, each dose of 50ku-D2 increased serum 25OHD by 3.62 ± 2.35 ng/mL without affecting serum calcium or creatinine levels. VDD was seen in nearly 25% of Massachusetts General Hospital FLS patients and more prevalent in male and younger patients. VDD was associated with longer length of stay and higher 30-day-readmission risk in patients with hip fracture. Daily 50ku-D2 appeared to be a practical way to quickly replete vitamin D in the inpatient setting.

Prevalence of vitamin D deficiency among pregnant women in Southeast Asia represents public health crisis: A systematic review and meta-analysis

BackgroundThe occurrence of vitamin D deficiency (VDD) among pregnant women in Southeast Asia is a pressing public health issue with far-reaching implications for maternal and fetal health. This study aims to assess the prevalence of VDD among pregnant women in Southeast Asia represents public health crisis. MethodsA meta-analysis was carried out to evaluate the occurrence of VDD in Southeast Asian pregnant women. The search encompassed articles published in PubMed, ProQuest, and EBSCO from January 2010 to December 2023. The prevalence rate is determined by dividing the total count of pregnant women with recorded vitamin D levels by the number of those found to be deficient in vitamin D. For statistical analysis, the DerSimonian and Laird random-effects model was utilized, and the 95% CI was computed using the Clopper-Pearson method. ResultsThe prevalence of VDD among pregnant women in Southeast Asia was 60% (95% CI, 38%–82%; p < 0.001; I2, 99.8%), while vitamin D insufficiency was found in 25% (17%–32%; p < 0.001; I2, 95.2%), and hypovitaminosis D was present in 85% (74%–95%; p < 0.001; I2, 99.4%). The mean serum vitamin D level was 42.48 nmol/L (32.40 nmol/L - 52.57 nmol/L; p < 0.001; I2, 99.5%). ConclusionOur meta-analysis highlights a significant public health crisis regarding VDD among pregnant women in Southeast Asia. Public health strategies should prioritize efforts to raise awareness, promote sun exposure, and provide supplementation to ensure adequate vitamin D levels among pregnant women in Southeast Asia.

Prevalence of Vitamin D Deficiency among Children Visiting King Khalid University Hospital in Riyadh, Saudi Arabia

Background: Vitamin D deficiency (VDD) is a widespread issue, especially in Saudi Arabia, with implications for various health conditions. The study aimed to evaluate VDD's prevalence and associated factors among children visiting King Khalid University Hospital (KKUH) in Riyadh, Saudi Arabia, to inform public health strategies. Methods: Employing a retrospective study design, medical records from 391 pediatric patients aged 1-14 who visited KKUH from April 2023 to October 2023 were analyzed for vitamin D levels, demographic data, comorbidities, and supplementation status. Based on established thresholds, vitamin D levels were categorized into normal, insufficiency, and deficiency. Statistical analyses, including chi-square tests, assessed the association between vitamin D levels and independent variables. Results: Out of the 391 subjects, 56.8% had normal vitamin D levels, 17.6\% were deficient, and 25.6\% were insufficient. Treatment or prophylaxis was reported in 75.2% of those with normal levels. The prevalence of VDD was not significantly related to gender (p = 0.635) but was significantly associated with age (p &lt; 0.001), with higher deficiency rates observed in older children (10-14 years). Most children (84.4%) were asymptomatic, while specific symptoms like bone ache and fatigue were less commonly reported. Conclusions: The study highlighted a substantial prevalence of vitamin D insufficiency and deficiency among children in a Saudi Arabian tertiary care setting, with age identified as a significant correlate. These findings emphasize the need for regular screening and targeted vitamin D supplementation strategies in pediatric healthcare practice to mitigate the risks associated with VDD.

Prevalence of vitamin D deficiency in Libya and its relation to other health disorders

Vitamin D (VD) has a potential role in calcium homeostasis in the human body. It is also considered a strong immunomodulator, affecting both arms of the immune system (Innate and adaptive immunity). VD can also lower the risk of diabetes, improve pregnancy outcomes, reduce the risk of acute respiratory infection (e.g., COVID-19), and decrease the risk of cancer. No doubt that VD deficiency (VDD) is a health condition that spreads out all over the globe. VDD is linked to many health problems ranging from fatigue and skeleton pain to serious conditions such as rickets, osteomalacia, diabetes, autoimmune disease, cardiovascular diseases, and cancer. This review aims to provide a whole picture of the status of 25- hydroxycholecalciferol [25-(OH)D] as well as the frequency of 25-(OH)D deficiency (VDD) among Libyans in various regions of the country and to discuss the correlation between VDD and other health problems. The prevalence of VDD reached up to 80% among healthy individuals in the Middle East region. Libya is a big Mediterranean country and is sunny most of the year. In the western part of Libya, particularly in Tripoli (the capital city), the prevalence of severe VDD [25-(OH)D &lt; 10 ng/mL] was as high as 50.8%, whereas only 27.5% had moderate VDD [25-(OH)D; 10-20 ng/mL]. In Benghazi (second largest city), the VDD prevalence was also high (76%). The highest prevalence of VDD was reported at 79% in the biggest southern city of Sebha. In the whole country, the VDD prevalence was high (among males and females), ranging from 45.4% to 87%, with a mean of 55.58%. The mean prevalence of VDD among males was 54.3% and for females was 53.29%. As clear from these data, VDD prevalence was high in the entire country. However, the available data were obtained from small cross-sectional studies and it becomes a necessity to conduct nationally representative studies and establish national nutrition surveys to accurately assess the prevalence of VDD. Moreover, the data included in this review invites the health authorities in Libya to take preventive measures to reduce the high prevalence of VDD, which will decrease VDD-associated health problems in the future.

Association between vitamin D status and cardiometabolic risk factors in adults with type 2 diabetes in Shenzhen, China.

Evidence of vitamin D status and cardiometabolic health in adults with type 2 diabetes mellitus (T2DM) is still limited. This study aimed to investigate the association between vitamin D status and cardiometabolic risk factors among adults with T2DM in Shenzhen, China. This cross-sectional study included 164 adults (aged ≥18 years) with T2DM who were hospitalized at Peking University Shenzhen Hospital from March 1, 2023, to May 31, 2023. Serum 25-hydroxyvitamin D [25(OH)D] concentration, the active marker of vitamin D, and three major cardiometabolic risk factors including blood pressure (BP), glucose metabolism-related indicators, and blood lipid profiles were collected. Vitamin D deficiency (VDD) was defined as 25(OH)D < 20 ng/mL. Correlation, Regression, and Logistic analysis were applied to verify the association among serum 25(OH)D concentration, VDD, and 11 cardiometabolic risk factors. Median 25(OH)D concentration was 21.78 [interquartile range (IQR)=17.51-28.05] ng/mL. The prevalence of VDD was 40.24%. Serum 25(OH)D concentration was significantly negatively correlated with diastolic BP (DBP) and glycated hemoglobin A1c (HbA1c) rather than systolic BP, plasma glucose, plasma C-peptide, and blood lipid profiles among adults with T2DM in both correlation and linear regression analysis. Furthermore, the adjusted odd ratio for poor DBP control (≥90 mmHg) of T2DM patients with VDD was 3.164 (95% confidence interval=1.303, 7.683; P=0.011) compared to those without VDD. In China, VDD was highly prevalent among adults with T2DM and associated with greater cardiovascular risk factors, especially with increased chances of uncontrolled DBP. These findings suggest that vitamin D levels should be monitored in T2DM patients, especially those with high DBP.

Association of vitamin D with HIV infected individuals, TB infected individuals, and HIV-TB co-infected individuals: a systematic review and meta-analysis.

Vitamin D deficiency (VDD) is a worldwide disease. VDD is also associated with an increased risk of HIV-related comorbidities and mortality, and patients have a tendency to develop active tuberculosis compared to those with latent tuberculosis infection. Vitamin D supplementation may modulate HIV replication, improve TB inflammation and reduce progression of HIV-TB co-infection. We meta-analyzed individual participant data from cohort studies, cross-sectional study, and RCTs of vitamin D in HIV group, TB group, and HIV-TB group. The primary outcomes were differences in vitamin D level and VDD prevalence between three groups, the secondary outcomes were CD4 count, HIV viral load, time to sputum smear conversion, time to culture conversion, relapse, morality, and TB score. For vitamin D levels, the overall mean difference (MD) between HIV group and TB group was -0.21 (95% CI, -20.80-20.38; p = 0.9, I2 = 84%), HIV group and HIV-TB group was 0.87 (95% CI, -11.45-13.20; p = 0.89, I2 = 87%), and TB group and HIV-TB group was 1.17 (95% CI, -5.21-7.55; p = 0.72, I2 = 85%). For vitamin D deficiency prevalence, the overall odds ratio (OR) for HIV group versus TB group was 1.23 (95% CI, 0.46-3.31; p = 0.68; I2 = 70%), HIV group versus HIV-TB group was 1.53 (95% CI, 1.03-2.29; p = 0.04; I2 = 0%), and TB group versus HIV-TB group was 0.85 (95% CI, 0.61-1.20; p = 0.36; I2 = 22%). In HIV-TB group, the overall OR for vitamin D group versus placebo group was 0.78 (95% CI, 0.34-1.67; p = 0.52; I2 = 60%). Our findings indicated that there were no variations in vitamin D levels between three groups. The prevalence of vitamin D deficiency was higher in the HIV-TB group than in the HIV group. Additionally, the administration of vitamin D supplements did not have obvious impact on CD4 count and viral load. Likewise, vitamin D had no effect on time to sputum smear conversion, time to culture conversion, relapse, 12-month morality, and TB score.

Ukrainian Consensus on Diagnosis and Management of Vitamin D Deficiency in Adults.

Vitamin D deficiency (VDD) is a global problem, however, there were no Ukrainian guidelines devoted to its screening, prevention, and treatment, which became the reason for the Consensus creation. This article aimed to present the Consensus of Ukrainian experts devoted to VDD management. Following the creation of the multidisciplinary Consensus group, consent on the formation process, drafting and fine-tuning of key recommendations, and two rounds of voting, 14 final recommendations were successfully voted upon. Despite a recent decrease in VDD prevalence in Ukraine, we recommend raising awareness regarding VDD's importance and improving the strategies for its decline. We recommend screening the serum 25-hydroxyvitamin D (25(OH)D) level in risk groups while maintaining a target concentration of 75-125 nmol/L (30-50 ng/mL). We recommend prophylactic cholecalciferol supplementation (800-2000 IU/d for youthful healthy subjects, and 3000-5000 IU/d for subjects from the risk groups). For a VDD treatment, we recommend a short-term administration of increased doses of cholecalciferol (4000-10,000 IU/d) with 25(OH)D levels monitored after 4-12 weeks of treatment, followed by the use of maintenance doses. Additionally, we recommend assessing serum 25(OH)D levels before antiosteoporotic treatment and providing vitamin D and calcium supplementation throughout the full course of the antiosteoporotic therapy.

Vitamin D3 deficiency and coronavirus-related health problems

Introduction: In addition to boosting calcium absorption in the small intestine and preserving sufficient levels of calcium and phosphate in the serum to support proper bone mineralization, Vitamin D3 fortifies the immune system. Vitamin D3 deficiency can occur when regular intakes are gradually below recommended levels and when people get little sunshine exposure. Materials and Methods: The study was conducted using a case series study approach. A structured checklist was utilized on 107 individuals who had recovered from corona disease to identify the causes behind the unfavorable health effects they continue to experience. In addition, the patients underwent extensive laboratory blood testing in a specialized laboratory and received follow-up care for a period of 6 months. The results were analyzed using the Chi-square test and the Paired t-test using the SPSS software. Results: Despite the finding that 84.1% of the study group had Vitamin D3 levels below the normal range, their physical health conditions had considerably improved as a result of the treatment they received. Conclusion: The study found that patients with coronavirus infection had a high prevalence of Vitamin D3 deficiency. After 6 months, this percentage dropped considerably, raising the possibility that the coronavirus may have contributed to the drop in plasma Vitamin D3 levels. To find out how long-lasting COVID-19 symptoms are related to Vitamin D3 deficiency, more research is required. The following core competencies are addressed in this article: Medical knowledge, Patient care and procedural skills.

Association between urinary arsenic species and vitamin D deficiency: a cross-sectional study in Chinese pregnant women.

An increasing number of studies suggest that environmental pollution may increase the risk of vitamin D deficiency (VDD). However, less is known about arsenic (As) exposure and VDD, particularly in Chinese pregnant women. This study examines the correlations of different urinary As species with serum 25 (OH) D and VDD prevalence. We measured urinary arsenite (As3+), arsenate (As5+), monomethylarsonic acid (MMA), and dimethylarsinic acid (DMA) levels and serum 25(OH)D2, 25(OH)D3, 25(OH) D levels in 391 pregnant women in Tianjin, China. The diagnosis of VDD was based on 25(OH) D serum levels. Linear relationship, Logistic regression, and Bayesian kernel machine regression (BKMR) were used to examine the associations between urinary As species and VDD. Of the 391 pregnant women, 60 received a diagnosis of VDD. Baseline information showed significant differences in As3+, DMA, and tAs distribution between pregnant women with and without VDD. Logistic regression showed that As3+ was significantly and positively correlated with VDD (OR: 4.65, 95% CI: 1.79, 13.32). Meanwhile, there was a marginally significant positive correlation between tAs and VDD (OR: 4.27, 95% CI: 1.01, 19.59). BKMR revealed positive correlations between As3+, MMA and VDD. However, negative correlations were found between As5+, DMA and VDD. According to our study, there were positive correlations between iAs, especially As3+, MMA and VDD, but negative correlations between other As species and VDD. Further studies are needed to determine the mechanisms that exist between different As species and VDD.

Vitamin D Deficiency in Patients Hospitalized for Heart Failure Living in the Tropics.

Vitamin D, as a steroid hormone, has multiple effects on human body and its deficiency has been associated with an increased risk of heart failure (HF) and unfavorable outcomes. The present study investigated the prevalence of vitamin D deficiency (VDD) and its relationship with cardiometabolic parameters in patients hospitalized for HF living in the city of Recife (latitude 8° South). Analytical cross-sectional study, with men and women aged 40-64 years. The HF group was recruited during hospitalization due to decompensation. A matched control group was recruited from the general endocrine clinics. Vitamin D status was assessed by measuring serum 25-hydroxyvitamin D (25OHD), considering deficiency when 25OHD <20 ng/mL (<50 nmol/L). A total of 243 patients were evaluated (HF group: 161, control group: 82). Lower serum 25OHD levels were observed in the HF group (25.2±9.4 vs. 30.0±7.7ng/mL; p<0.001), as well as a higher prevalence of VDD (27.3% vs. 9.8%; prevalence ratio, 2.80; 95% confidence interval, 1.38-5.67; p=0.002). In patients with HF, VDD was associated with diabetes mellitus (65.9% vs. 41.0%; p=0.005) and female sex (65.9% vs. 44.4%; p=0.015). In the subgroup with VDD, higher values of hemoglobin A1c (7.9% [6.0-8.9] vs. 6.2% [5.7-7.9]; p=0.006) and dyslipidemia were also observed. We found higher rates of VDD in patients hospitalized for HF and this was associated with deleterious laboratory metabolic parameters.

Prevalence and associated factors of vitamin D deficiency after Roux-en-Y gastric bypass: a systematic review and meta-analysis.

To estimate the prevalence and associated factors of vitamin D deficiency (VDD) after Roux-en-Y gastric bypass (RYGB). PubMed, EMBASE, and CENTRAL were searched for relevant records from inception to 17 March 2023, using search terms: vitamin D, vitamin D3, vitamin D deficiency, hypovitaminosis D, gastric bypass, and RYGB. Studies were eligible for inclusion if they provided related data on VDD prevalence after RYGB. Of the 1119 screened studies, 72 studies involving 7688 individuals were enrolled in the final analysis. The prevalence estimates of VDD after RYGB were 42%. Subgroup analyses suggested the pooled prevalence of postoperative VDD was 35% for follow-up duration less than or equal to 1 year, 43% for greater than 1 and less than or equal to 5 years, and 54% for greater than 5 years. Meta-regression showed that VDD prevalence was positively correlated with follow-up time. Also, the prevalence was higher in studies with inadequate vitamin D supplementation than in those with adequate supplementation and in Asia population than in those from South America, Europe, and North America. Other factors associated with high VDD prevalence after RYGB included high presurgical VDD prevalence, noncompliant patients, and black populations. No significant association existed between VDD and alimentary length. VDD presented a high prevalence in patients following RYGB. It occurred more frequently with longer postoperative follow-up time. Population-specific vitamin D supplementation measures, targeted treatment for presurgical VDD, improved patient compliance, and periodical follow-ups were necessary to reduce VDD and other adverse outcomes.

Prevalence and predictors of vitamin D deficiency among hospital staff in tertiary care center: a cross sectional study

Background: Vitamin D deficiency (VDD) is prevalent across all age groups in general population not sparing the health care workers. This study aimed to assess the prevalence and risk factors of VDD among the hospital workers of tertiary care center in Kashmir valley. Methods: In this cross-sectional study, a total of 216 apparently healthy subjects were screened for VDD from three groups, group A- minimal sunlight exposure (office employees), group B- moderate sunlight exposure (nursing students) and group C- abundant sunlight exposure (gardeners). Serum calcium, phosphorus, alkaline phosphatase, 25-hydroxy vitamin D [25(OH)D], PTH levels and urine calcium/creatinine was assessed in all subjects. Dietary assessment of vitamin D (VD) and calcium intake was done using three days dietary recall. The percent body surface area (BSA) exposed to sunshine was estimated by applying the Wallace rule of nine. Results: Serum 25(OH)D level was found to be lower in group A (17.29±10.87) as compare to group B (21.78±16.37) and group C (26.40±15.59). Prevalence of VDD was 71.6%, 70.6% and 50% in group A, group B and group C respectively. VDD was more prevalent in females and risk increased with age and BMI, decreased with duration of daily sunlight exposure, percentage BSA and dietary VD intake. Conclusions: Burden of VDD is high among hospital workers despite their direct contact with healthcare. Strategies should be made to screen them regularly and supplementation of VD should be provided to effectively counteract VDD.

Single nucleotide polymorphisms in vitamin D binding protein and 25-hydroxylase genes affect vitamin D levels in adolescents of Arab ethnicity in Kuwait.

Vitamin D deficiency (VDD) is widespread in the Arab world despite ample sunshine throughout the year. In our previous study, lifestyle and socio-demographic factors could explain only 45% of variability in vitamin D levels in Kuwaiti adolescents, suggesting that genetics might contribute to VDD in this region. Single nucleotide polymorphisms (SNP) in the 25-hydroxylase (CYP2R1) and the GC globulin (GC) genes have been reported to affect vitamin D levels in various ethnic groups in adults. In this study, we investigated the association of two SNPs from GC (rs4588 and rs7041) and three SNPs from CYP2R1 (rs10741657, rs11023374 and rs12794714) with vitamin D levels and VDD in a nationally representative sample of adolescents of Arab ethnicity from Kuwait. Multivariable linear regression, corrected for age, sex, parental education, governorate, body mass index, and exposure to sun, demonstrated that each of the 5 study variants showed significant associations with plasma 25(OH)D levels in one or more of the additive, recessive, and dominant genetic models - the rs10741657 under all the three models, rs12794714 under both the additive and recessive models, rs7041 under the recessive model; and rs4588 and rs11023374 under the dominant model. Minor alleles at rs4588 (T), rs7041 (A), rs11023374 (C), and rs12794714 (A) led to a decrease in plasma 25(OH)D levels - rs4588:[β (95%CI) = -4.522 (-8.66,-0.38); p=0.033]; rs7041:[β (95%CI) = -6.139 (-11.12,-1.15); p=0.016]; rs11023374:[β (95%CI) = -4.296 (-8.18,-0.40); p=0.031]; and rs12794714:[β (95%CI) = -3.498 (-6.27,-0.72); p=0.014]. Minor allele A at rs10741657 was associated with higher levels of plasma 25(OH)D levels [β (95%CI) = 4.844 (1.62,8.06); p=0.003)] and lower odds of vitamin D deficiency (OR 0.40; p=0.002). These results suggest that the CYP2R1 and GC SNP variants are partly responsible for the high prevalence of VDD in Kuwait. Genotyping these variants may be considered for the prognosis of VDD in Kuwait.

Vitamin D deficiency and its associated factors among patients with type 2 diabetes mellitus: a systematic review and meta-analysis

ObjectiveThe study intended to assess the pooled prevalence of vitamin D deficiency (VDD) and its associated factors among patients with type 2 diabetes mellitus (T2DM).DesignThe Preferred Reporting Items for Systematic...

Prevalence and risk factors of vitamin D deficiency among living with HIV adults receiving antiretroviral treatment in tropical area: Cross-sectional study

BackgroundThere was found HIV infection have a higher rate of vitamin D deficiency (VDD) than the general population, even a slight deficiency, can increase the risk of osteoporosis in adults. This study aimed to determine the prevalence and risk factors of VDD in HIV-infected adults receiving antiretroviral therapy (ART) in a tropical area. MethodsA cross-sectional study of an HIV-clinical population-based cohort was conducted at Police General Hospital (PGH), from 1st August 2020 to 31st July 2021, in Bangkok, Thailand. Serum 25(OH)D level was measured using ECLIA. All other laboratory investigations were conducted at the PGH's central lab center. The descriptive analysis utilized frequency (percentages) and mean (SD) as appropriate variable types. Chi-square tests (χ2) and independent samples t-tests were used to differentiate between VDD and non-VDD groups. To determine the association between VDD and non-VDD, gender, age (years), BMI discrepancy, ART regimens, ART-duration (years), HIV viral load, and CD4 count (cells/mm3). Univariate and multivariable logistics regression was conducted, respectively. ResultsOf 602 patients, 66.4% were females with mean age of 45.22 ± 10.23 years. The average serum 25(OH)D level was 18.69 ± 7.23 ng/ml. The prevalence of VDD (<20 ng/ml) and insufficiency (VDI) (20–29.9 ng/ml) was 58.5% and 35.2%, respectively. Risk factors associated with vitamin D inadequacy were increasing age (AOR = 1.05, 95%CI = 1.03–1.07, P < .001), efavirenz (EFV-based) use (AOR = 6.07, 95%CI = 3.57–10.31, P < .001), while male (AOR = 0.44, 95%CI = 0.29–0.66, P < .001), body mass index (BMI) lower than 18.5 (AOR = 0.26; 95% CI, 0.11–0.62, P = .002), protease Inhibitors (PIs-based) use (AOR = 0.18, 95%CI = 0.11–0.30, P < .001),and CD4 count <200 cells/mm3 (AOR = 0.41; 95% CI, 0.20–0.85, P = .017) were associated with less VDD. ConclusionThe implementation of focused strategies for vitamin D supplementation, specifically targeting older patients and patients undergoing EFV-based ART regimen, can serve as a valuable addition to comprehensive HIV management. By optimizing vitamin D levels, there is a potential to improve health outcomes and enhance overall well-being for individuals living with HIV.

Vitamin D deficiency prevention policies in Iran: a retrospective policy analysis.

Iran has a higher prevalence of vitamin D deficiency (VDD) than the global level. This study aimed to assess VDD prevention policies in Iran through a policy analysis of agenda setting using the multiple streams framework (MSF). Using Kingdon's MSF model, this qualitative analytical study performed a policy analysis on vitamin D-related policies in Iran. The policy documents were reviewed, and in-depth interviews were conducted with stakeholders (n = 27) using the framework analysis method. To categorize data and extract the related themes, MAXQDA version 10 was used. According to Kingdon's MSF theory, the problem stream included the high prevalence of VDD among Iranian infants (23.3%), adolescents (76%), and adults (59.1%). The policy stream was identified to focus on preventing programs for non-communicable diseases in the health sector. The political stream indicated that national and international support could provide a political climate for this issue. According to our results, a window of opportunity for policymaking on VDD prevention has opened. However, there are some challenges related to the implementation of these policies. These include the dominance of a treatment-based view rather than a prevention-based approach in the health sector, economic problems, and restricted access to health services due to the outbreak of coronavirus disease 2019 (COVID-19). To strengthen and implement VDD prevention policies, the stakeholders need support from high-level policymakers.

Vitamin D deficiency in children and pathology of the digestive system

The review shows the relationship of vitamin D deficiency (VDD) with various forms of pathology of the gastrointestinal tract. The VDD prevalence in Russia has regional and age characteristics and reaches 42%. In addition to the key role as a regulator of calcium metabolism, which ensures the growth and formation of the structure of bone tissue, vitamin D was established to affect the course of various forms of pathology of the gastrointestinal tract. At the same time, it acts as a regulator of innate immunity. In other cases, the effects of vitamin D are aimed at activating anti-inflammatory factors, which determine its positive effect on the course of diseases through antioxidant action. Data on the VDD impact on the formation of various forms of intestinal pathology with an inflammatory and immune mechanism of development are presented. The authors point to the VDD impact in inflammatory bowel diseases. Regardless of the VDD primacy of inflammatory bowel disease, the correction of the VDD has a pronounced positive effect on the course of the disease.

Vitamin D Deficiency and Carotid Media-Intima Thickness in Childhood Cancer Survivors.

Childhood cancer survivors (CCS) are predisposed to developing numerous late effects of anticancer treatment later in life. The existing literature suggests that vitamin D deficiency (VDD) may influence cardiovascular abnormalities and metabolic diseases. The objectives of this study were to investigate the prevalence of VDD among childhood cancer survivors and examine the association of vitamin D deficiency and carotid intima-media thickness (IMT). The study comprised 111 childhood cancer survivors (62 males, 49 females) with a median follow-up time of 6.14 years. Vitamin D status was determined by measuring serum 25(OH)D levels using the automatic immunoenzymatic method. Ultrasonography of the common carotid artery (CCA), the carotid bulb, and the proximal part of the internal carotid artery (ICA) was conducted. Vitamin D deficiency (<20 ng/mL) was detected in 69.4% of CCS. A higher parathormone level and increased BMI were observed among VDD survivors. No effects of type of diagnosis, radiotherapy or hematopoietic stem cell transplantation on vitamin D status were observed. Our findings reveal that survivors with VDD exhibited significantly greater thickness in the CCA and carotid bulb. In conclusion, the results of our study of childhood cancer survivors demonstrate that vitamin D deficiency is prevalent in up to 70% of individuals. We did not confirm the hypothesis that factors related to anticancer treatment used during childhood contributed to the higher prevalence of VDD. Additionally, we did not verify the contribution of vitamin D deficiency to the increase in IMT thickness.