Serum Vitamin D Levels in Orthopaedic Trauma Patients Living in the Northwestern United States

Abstract. Optimal serum vitamin D levels are reported to be associated with many health benefits; however, few studies have determined predictive factors using national level data. An assessment of predictive factors for vitamin D inadequacy was conducted using National Health and Nutrition Examination Survey (NHANES) 2001–2006 data. Using the study sample including adults aged 40 years or more, data analysis was performed using the weighted multivariate logistic regression statistical procedure. The prevalence of vitamin D inadequacy (serum vitamin D <20 ng/ml) was 37.3%. Non-Hispanic Blacks were 6.4 times more likely to demonstrate vitamin D inadequacy compared to non-Hispanic Whites (ORadj=6.351; 95% CI 5.338, 7.555; p<0.0001). Also, female gender was a significant predictor of vitamin D inadequacy (ORadj=1.499; 95% CI 1.315, 1.708; p<0.0001) in multivariate models. Subjects who reported not taking vitamin D supplements in the past 30 days were more than twice as likely to be vitamin D inadequate compared with those who had taken dietary supplements containing vitamin D (ORadj=2.225; 95% CI 1.903, 2.601; p<0.0001). In conclusion, the strongest predictor of vitamin D inadequacy was non-Hispanic Black ethnicity. Other potential predictors included smoking, non-use of vitamin D supplements, abnormal BMI, collecting samples in winter, female gender, perception of own health condition as not excellent, lack of health care, and older age. More focused interventions targeting groups of United States residents with vitamin D inadequacy are needed.

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Serum Vitamin D Levels Are Not Associated with Obstructive Lung Disease in the General Population: An NHANES Analysis (2007-2008 to 2009-2010)

10.1101/2020.11.10.20229310 ◽

2020 ◽

Author(s):

Mohamed I Seedahmed ◽

Aaron D Baugh ◽

Jordan A Kempker

Keyword(s):

United States ◽

Vitamin D ◽

General Population ◽

Lung Disease ◽

Obstructive Lung Disease ◽

Serum Vitamin ◽

The United States ◽

Serum Vitamin D ◽

Vitamin D Levels ◽

Independent Association

ABSTRACTBackgroundObstructive lung disease is a significant cause of morbidity and healthcare burden within the United States. A growing body of evidence has suggested that vitamin D levels can influence the course or incidence of obstructive lung disease. However, there is an insufficient previous investigation of this association.Study Design and MethodsWe used the National Health and Nutrition Examination Survey (NHANES) cycles 2007-2008 and 2009-2010 spirometry results of individuals aged 40 years and older to assess the association between serum 25(OH)D levels and obstructive lung disease, as defined by the American Thoracic Society using the lower limit of normal (LLN). We used stage multivariate survey-logistic regression with backward selection.ResultsThe final model included body mass index, pack-years smoking history, and ethnicity. In the primary model, there was no association between vitamin D levels and obstructive lung disease. We noted an association between “Other Hispanic” self-identified race and serum Vitamin D levels wherein higher levels were associated with higher odds of obstructive lung disease in this ethnicity, but not among other racial or ethnic groups (OR= 1.48, p= 0.02).ConclusionsSerum Vitamin D levels among adults are not associated with the odds of obstructive lung disease in the general population. Results among non-Mexican Hispanic participants highlight the need for further research in minority populations. More work is needed to address the course and incidence of lung disease in the United States.RESEARCH IN CONTEXTWhat is the key question?In the general population, is there an independent association between Vitamin D and obstructive lung disease after controlling for relevant covariates?What is the bottom line?In exploring whether serum vitamin D levels are associated with odds of obstructive lung disease in the general US population, we did not find an independent association in the overall sample.Why read on?This paper adds nuance to the broad understanding of vitamin D’s role in lung pathophysiology.

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Clinical factors correlated with vitamin D deficiency in patients with obesity scheduled for bariatric surgery: A single center experience

International Journal for Vitamin and Nutrition Research ◽

10.1024/0300-9831/a000662 ◽

2020 ◽

Vol 90 (3-4) ◽

pp. 346-352

Author(s):

Vincenzo Pilone ◽

Salvatore Tramontano ◽

Carmen Cutolo ◽

Federica Marchese ◽

Antonio Maria Pagano ◽

...

Keyword(s):

Bariatric Surgery ◽

Vitamin D ◽

Vitamin D Deficiency ◽

Serum Vitamin ◽

Inverse Correlation ◽

Model Assessment ◽

Cross Sectional ◽

Serum Vitamin D ◽

Female Sex ◽

Vitamin D Levels

Abstract. We aim to assess the prevalence of vitamin D deficiency (VDD) in patients scheduled for bariatric surgery (BS), and to identify factors that might be associated with VDD. We conducted a cross-sectional observational study involving all consecutive patients scheduled for BS from 2017 to 2019. The exclusion criteria were missing data for vitamin D levels, intake of vitamin D supplements in the 3 months prior to serum vitamin D determination, and renal insufficiency. A total of 206 patients (mean age and body mass index [BMI] of 34.9 ± 10.7 years, and 44.3 ± 6.99 kg/m2, respectively) met the inclusion criteria and were enrolled for data analysis. VDD (<19.9 ng/mL), severe VDD (<10 ng/mL), and vitamin D insufficiency (20–29.9 ng/mL) were present in 68.8 %, 12.5 %, and 31.2 % of patients, respectively. A significant inverse correlation was found between vitamin D levels and initial BMI, parathyroid hormone, and homeostatic model assessment of insulin resistance (r = −0.280, p < 0.05; r = −0.407, p = 0.038; r = −0.445, p = 0.005), respectively. VDD was significantly more prevalent in patients with higher BMI [−0.413 ± 0.12, CI95 % (−0.659; −0.167), p = 0.006], whereas no significant association between hypertension [−1.005 ± 1.65, CI95 % (−4.338; 2.326), p = 0.001], and diabetes type 2 (T2D) [−0.44 ± 2.20, CI95 % (−4.876; 3.986), p = 0.841] was found. We observed significant association between female sex and levels of vitamin D [6.69 ± 2.31, CI95 % (2.06; 11.33), p = 0.006]. The present study shows that in patients scheduled for BS, VDD deficiency is common and was associated with higher BMI, and female sex.

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Maternal Serum Vitamin D Levels During Pregnancy and Offspring Neurocognitive Development

PEDIATRICS ◽

10.1542/peds.2011-2644d ◽

2012 ◽

Vol 129 (3) ◽

pp. X11-X11

Keyword(s):

Vitamin D ◽

Serum Vitamin ◽

Maternal Serum ◽

Neurocognitive Development ◽

Serum Vitamin D ◽

Vitamin D Levels

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Faculty Opinions recommendation of Decreased serum vitamin D levels in children with asthma are associated with increased corticosteroid use.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.3437965.3141061 ◽

2010 ◽

Author(s):

Leonard Bacharier ◽

Avraham Beigelman

Keyword(s):

Vitamin D ◽

Serum Vitamin ◽

Serum Vitamin D ◽

Vitamin D Levels ◽

Children With Asthma

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Association of Vitamin D Levels and Other Risk Factors with Asthma Exacerbations in Children

Pakistan Journal of Medicine and Dentistry ◽

10.36283/pjmd9-4/004 ◽

2020 ◽

Keyword(s):

Risk Factors ◽

Vitamin D ◽

Serum Vitamin ◽

Persistent Asthma ◽

Food Allergies ◽

P Value ◽

Serum Vitamin D ◽

Asthma Exacerbations ◽

Vitamin D Levels ◽

Animal Dander

Background: The risk factors for asthma exacerbations are well understood. However, the effect of vitamin D levels on number of asthma exacerbations per year is not clearly studied. The objective of the study was to ﬁnd out the association of serum vitamin D levels and asthma risk factors on asthma exacerbations. Methods: In this study, ninety-nine subjects from 5 to 15 years of age were recruited at an episode of acute exacerbation. It was a cross sectional study and carried out from 2012 to 2015. Pulmonary function test was done by spirometry. Asthma exacerbation was labeled when forced expiratory volume/ forced vital capacity (FEV1/FVC) ratio was less than 80% (American Thoracic Society). Global Initiative for Asthma (GINA) guidelines were used to classify asthma into mild, moderate and severe persistent asthma. Serum vitamin D levels were measured by chemiluminescence method. Pearson Chi-square test was applied and p value (p<0.05) was considered as statistically signiﬁcant. Results: Children who had exposure to animal dander had signiﬁcantly lower asthma exacerbations per year (p-value <0.046). There was no signiﬁcant association between vitamin D levels and number of exacerbations per years (p-value <0.099). Asthma was prevalent in girls of low socioeconomic status (SES) compared to males. However, there was no signiﬁcant association between smoke, exercise, home environment, food allergies, weather, pollen and dust with asthma exacerbations. Conclusion: Low levels of vitamin D were not associated with increased number of asthma exacerbations per year. However, children exposed to animal dander had lesser number of exacerbations per year (p-value <0.046). Keywords: Asthma; Vitamin D; Children; Exacerbations, Risk factors.

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