Older women do not have seasonal variations of vitamin D levels

2018 ◽  
Vol 25 (8) ◽  
pp. 912-917 ◽  
Author(s):  
María S. Vallejo ◽  
Juan E. Blümel ◽  
Pablo Lavín ◽  
Claudio Torres ◽  
Alejandro Araos ◽  
...  
Keyword(s):  
Vitamin D ◽  
Older Women ◽  
Seasonal Variations ◽  
Vitamin D Levels

Serum levels of 25(OH)D are not associated with venous thromboembolism in the elderly population

2016 ◽  
Vol 115 (01) ◽  
pp. 169-175 ◽  
Author(s):  
Aurélien Delluc ◽  
Marie-Pierre Moineau ◽  
Cécile Tromeur ◽  
Maelenn Gouillou ◽  
Karine Lacut ◽  
...  
Keyword(s):  
Vitamin D ◽  
Venous Thromboembolism ◽  
Seasonal Variations ◽  
Elderly Population ◽  
Serum Levels ◽  
The Elderly ◽  
Vitamin D Status ◽  
Increased Risk ◽  
Vitamin D Levels ◽  
Walking Capacity

SummaryThe prevalence of both vitamin D deficiency and venous thromboembolism (VTE) is important in the elderly. Previous studies have provided evidence for a possible association between vitamin D status and the risk of VTE. Thus, we aimed to investigate the association between vitamin D levels and VTE in the population aged 75 and over included in the EDITH case-control study. The association between vitamin D status and VTE was analysed. We also analysed the monthly and seasonal variations of VTE and vitamin D. Between May 2000 and December 2009, 340 elderly patients (mean age 81.5 years, 32 % men) with unprovoked VTE and their controls were included. The univariate and multivariate analysis found no significant association between serum levels of vitamin D and the risk of unprovoked VTE. In the unadjusted analysis, a higher BMI was statistically associated with an increased risk of VTE (OR 1.09; 95 % CI 1.05–1.13) whereas a better walking capacity and living at home were associated with a decreased rate of VTE: OR 0.57; 95 % CI 0.36–0.90 and 0.40; 95 % CI 0.25–0.66, respectively. Although not significant, more VTE events occurred during winter (p=0.09). No seasonal variations of vitamin D levels were found (p=0.11). In conclusion, in contrast with previous reports our findings suggest that vitamin D is not associated with VTE in the elderly population.

scholarly journals Seasonal variations in vitamin D levels in HIV-infected patients

2017 ◽  
Vol 1 ◽  
pp. 50-53
Author(s):  
Sebastian Noe ◽  
Silke Heldwein ◽  
Rita Pascucci ◽  
Celia Oldenbüttel ◽  
Carmen Wiese ◽  
...  
Keyword(s):  
Vitamin D ◽  
Seasonal Variations ◽  
Vitamin D Levels

scholarly journals Seasonal variations in serum 25-hydroxy vitamin D levels in a Swedish cohort

Endocrine ◽  
2015 ◽  
Vol 49 (3) ◽  
pp. 800-808 ◽  
Author(s):  
Eva Klingberg ◽  
Göran Oleröd ◽  
Jan Konar ◽  
Max Petzold ◽  
Ola Hammarsten
Keyword(s):  
Vitamin D ◽  
Seasonal Variations ◽  
Vitamin D Levels ◽  
25 Hydroxy Vitamin D ◽  
Swedish Cohort

The unpredictability of seasonal variations in serum vitamin D levels in children with asthma and/or rhinitis

2019 ◽  
Vol 47 (5) ◽  
pp. 411-416 ◽  
Author(s):  
S. Miceli Sopo ◽  
G. Cerchiara ◽  
G. Bersani ◽  
S. Monaco ◽  
A. Romano ◽  
...  
Keyword(s):  
Vitamin D ◽  
Seasonal Variations ◽  
Serum Vitamin ◽  
Serum Vitamin D ◽  
Vitamin D Levels ◽  
Children With Asthma

scholarly journals Seasonal variations of 25-OH vitamin D serum levels in Multiple Sclerosis patients with relapse using MRI

2019 ◽  
Vol 29 (3) ◽  
Author(s):  
Sharareh Sanei Sistani ◽  
Ali Moghtaderi ◽  
Ali Reza Dashipoor ◽  
Maryam Ghaffarpoor ◽  
Bahareh Heshmat Ghahderijani
Keyword(s):  
Multiple Sclerosis ◽  
Spinal Cord ◽  
Vitamin D ◽  
Seasonal Variations ◽  
Significant Relationship ◽  
Cervical Spinal Cord ◽  
Serum Vitamin ◽  
Serum Levels ◽  
Serum Vitamin D ◽  
Vitamin D Levels

An increasing body of evidence suggests that low vitamin D (25-[OH]-D) concentrations is linked to increased activity in multiple sclerosis (MS) patients and MS relapse. Therefore, the current study was aimed to evaluate vitamin D serum concentrations and its possible seasonal variations among MS patients with relapse. This prospective, descriptive study was conducted on patients with MS relapse who referred to the neurology center of Ali ibn Abi Talib Hospital in Zahedan during one year. Magnetic Resonance Imaging (MRI)-Spine was performed for 90 patients and serum samples were collected from patient to measure serum vitamin D levels using RIA KIT. Furthermore, the plaques in each patient's MRI were counted and then recorded. Descriptive and inductive statistics were conducted using statistical software. Our findings indicated a significant correlation between serum vitamin D level and cervical spinal cord plaques (p = 0.007, r = 0.28), while no association was revealed between serum vitamin D level and number of brain plaque. Furthermore, a significant association was also observed between number of cervical spinal cord plaques and serum vitamin D levels. In addition, a reverse correlation was observed between number of cervical spinal cord plaques and serum vitamin D levels in spring. In autumn, there was a statistically significant relationship between number of brain plaque and serum vitamin D level. Additionally, a statistically significant relationship was found between serum vitamin D levels and number of plaques in winter. Our findings are in agreement with some previous studies that reported conflicting result, where the association of season with the prevalence of relapse cases cannot be verified. Although the mean serum levels of vitamin D are inversely correlated with the incidence of relapses in winter. However, the values obtained in the spring do not confirm such an inverse relationship.

CO24. Seasonal variations in vitamin D levels in melanoma patients

2011 ◽  
Vol 21 ◽  
pp. e14-e15
Author(s):  
L. El Hayderi ◽  
V. Failla ◽  
E. Cavalier ◽  
D. Paurobally ◽  
J.P. Chapelle ◽  
...  
Keyword(s):  
Vitamin D ◽  
Seasonal Variations ◽  
Vitamin D Levels ◽  
Melanoma Patients

scholarly journals Evaluation of vitamin d levels and seasonal variations among known population: An institutional based study

2019 ◽  
Vol 12 (2) ◽  
pp. 52-55
Author(s):  
Anil Kumar ◽  
◽  
Sangeeta Kapoor ◽  
Anjali Verma ◽  
Sushil Yadav ◽  
...  
Keyword(s):  
Vitamin D ◽  
Seasonal Variations ◽  
Vitamin D Levels

scholarly journals Passive Commuting and Higher Sedentary Time Is Associated with Vitamin D Deficiency in Adult and Older Women: Results from Chilean National Health Survey 2016–2017

Nutrients ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 300 ◽  
Author(s):  
Patricio Solis-Urra ◽  
Carlos Cristi-Montero ◽  
Javier Romero-Parra ◽  
Juan Zavala-Crichton ◽  
Maria Saez-Lara ◽  
...  
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Older Women ◽  
Leisure Time ◽  
Sedentary Time ◽  
Healthy Lifestyle ◽  
National Health Survey ◽  
Active Commuting ◽  
Cross Sectional ◽  
Vitamin D Levels

The aim was to investigate the associations between different physical activity (PA) patterns and sedentary time (ST) with vitamin D deficiency (<12 ng/mL) in a large sample of Chilean women. In this cross-sectional study, the final sample included 1245 adult and 686 older women. The PA levels, mode of commuting, ST, and leisure-time PA were self-reported. Vitamin D deficiency was defined as <12 ng/mL and insufficiency as <20 ng/mL. A higher ST was associated with vitamin D deficiency (odds ratio (OR): 2.4, 95%: 1.6–4.3) in adults, and passive commuting was associated with vitamin D deficiency in older (OR: 1.7, 95%: 1.1–2.7). Additionally, we found a joint association in the high ST/passive commuting group in adults (OR: 2.8, 95%: 1.6–4.9) and older (OR: 2.8, 95%: 1.5–5.2) with vitamin D deficiency, in respect to low ST/active commuting. The PA levels and leisure-time PA were not associated with vitamin D deficiency. In conclusion, mode of commuting and ST seems important variables related to vitamin D deficiency. Promoting a healthy lifestyle appears important also for vitamin D levels in adult and older women. Further studies are needed to establish causality of this association and the effect of vitamin D deficiency in different diseases in this population.

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