scholarly journals Optimal Vitamin D Status in a Middle-Aged and Elderly Population Residing in Shanghai, China

2017 ◽  
Vol 23 ◽  
pp. 6001-6011 ◽  
Author(s):  
Qiqige Aleteng ◽  
Lin Zhao ◽  
Huandong Lin ◽  
Mingfeng Xia ◽  
Hui Ma ◽  
...  
Keyword(s):  
Vitamin D ◽  
Elderly Population ◽  
Vitamin D Status ◽  
Middle Aged

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 Nutrihealth Study: Seasonal Variation in Vitamin D Status Among the Slovenian Adult and Elderly Population

Nutrients ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1838 ◽  
Author(s):  
Maša Hribar ◽  
Hristo Hristov ◽  
Matej Gregorič ◽  
Urška Blaznik ◽  
Katja Zaletel ◽  
...  
Keyword(s):  
Vitamin D ◽  
Seasonal Variation ◽  
Vitamin D Deficiency ◽  
Elderly Population ◽  
Sun Exposure ◽  
Epidemiological Data ◽  
The Elderly ◽  
Vitamin D Insufficiency ◽  
Ultraviolet B ◽  
Vitamin D Status

Several studies conducted around the world showed substantial vitamin D insufficiency and deficiency among different population groups. Sources of vitamin D in the human body include ultraviolet B (UVB)-light-induced biosynthesis and dietary intake, but people’s diets are often poor in vitamin D. Furthermore, in many regions, sun exposure and the intensity of UVB irradiation during wintertime are not sufficient for vitamin D biosynthesis. In Slovenia, epidemiological data about vitamin D status in the population were investigated through a national Nutrihealth study—an extension to the national dietary survey SI.Menu (2017/18). The study was conducted on a representative sample of 125 adult (18–64 years) and 155 elderly (65–74 years old) subjects, enrolled in the study in different seasons. Their vitamin D status was determined by measuring the serum 25-hydroxy-vitamin D (25(OH)D) concentration. Thresholds for vitamin D deficiency and insufficiency were 25(OH)D levels below 30 and 50 nmol/L, respectively. Altogether, 24.9% of the adults and 23.5% of the elderly were found to be vitamin D deficient, while an insufficient status was found in 58.2% and 62.9%, respectively. A particularly concerning situation was observed during extended wintertime (November–April); vitamin D deficiency was found in 40.8% and 34.6%, and insufficient serum 25(OH)D levels were observed in 81.6% and 78.8%, respectively. The results of the study showed high seasonal variation in serum 25(OH)D levels in both the adult and elderly population, with deficiency being especially pronounced during wintertime. The prevalence of this deficiency in Slovenia is among the highest in Europe and poses a possible public health risk that needs to be addressed with appropriate recommendations and/or policy interventions.

scholarly journals Changes In Vitamin D Status Before And After Nordic Summer In Overweight Middle-aged Participants

2018 ◽  
Vol 50 (5S) ◽  
pp. 749
Author(s):  
Petra Lundström ◽  
Maria J. Eriksson ◽  
Kenneth Caidahl ◽  
Anette Rickenlund
Keyword(s):  
Vitamin D ◽  
Vitamin D Status ◽  
Middle Aged ◽  
Before And After

scholarly journals Environmental Factors and Vitamin D Status in Polish middle-aged women

2020 ◽  
Vol 22 (1-2) ◽  
pp. 20-23
Author(s):  
Grzegorz Raszewski ◽  
Kondrad Jamka ◽  
Piotr Adamczuk
Keyword(s):  
Vitamin D ◽  
Environmental Factors ◽  
Vitamin D Status ◽  
Middle Aged

Association Between Elevated Serum Uric Acid and Vitamin D Insufficiency Among the Middle-Aged and Elderly Population

2016 ◽  
Vol 25 (2) ◽  
pp. 182-186 ◽  
Author(s):  
Mümtaz Takır ◽  
Yalçın Solak ◽  
Aybala Erek ◽  
Osman Köstek ◽  
Alihan Oral ◽  
...  
Keyword(s):  
Vitamin D ◽  
Uric Acid ◽  
Serum Uric Acid ◽  
Elderly Population ◽  
Elevated Serum ◽  
Vitamin D Insufficiency ◽  
Middle Aged

scholarly journals Association of High Vitamin D Status with Low Circulating Thyroid-Stimulating Hormone Independent of Thyroid Hormone Levels in Middle-Aged and Elderly Males

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Qingqing Zhang ◽  
Zhixiao Wang ◽  
Min Sun ◽  
Mengdie Cao ◽  
Zhenxin Zhu ◽  
...  
Keyword(s):  
Vitamin D ◽  
Thyroid Hormone ◽  
Smoking Status ◽  
Thyroid Stimulating Hormone ◽  
Vitamin D Status ◽  
Middle Aged ◽  
Hormone Levels ◽  
Elderly Males ◽  
Thyroid Hormone Levels ◽  
Tsh Levels

Background. A recent study has reported that high circulating 25-hydroxyvitamin D [25(OH)D] is associated with low circulating thyroid-stimulating hormone (TSH) levels, but only in younger individuals. The goal of the present study was to explore the relationship between vitamin D status and circulating TSH levels with thyroid autoimmunity and thyroid hormone levels taken into consideration in a population-based health survey of middle-aged and elderly individuals.Methods. A total of 1,424 Chinese adults, aged 41–78 years, were enrolled in this cross-sectional study. Serum levels of 25(OH)D, TSH, thyroid hormones, and thyroid autoantibodies were measured.Results. The prevalence of vitamin D insufficiency was 94.29% in males and 97.22% in females, and the prevalence of vitamin D deficiency was 55.61% in males and 69.64% in females. Vitamin D status was not associated with positive thyroid autoantibodies after controlling for age, gender, body mass index, and smoking status. Higher 25(OH)D levels were associated with lower TSH levels after controlling for age, FT4 and FT3 levels, thyroid volume, the presence of thyroid nodule(s), and smoking status in males.Conclusion. High vitamin D status in middle-aged and elderly males was associated with low circulating TSH levels independent of thyroid hormone levels.

scholarly journals Vitamin D status of middle-aged women at 65–71°N in relation to dietary intake and exposure to ultraviolet radiation

2004 ◽  
Vol 7 (2) ◽  
pp. 327-335 ◽  
Author(s):  
M Brustad ◽  
E Alsaker ◽  
O Engelsen ◽  
L Aksnes ◽  
E Lund
Keyword(s):  
Vitamin D ◽  
Hypovitaminosis D ◽  
Food Sources ◽  
Uv Exposure ◽  
Vitamin D Status ◽  
Middle Aged ◽  
Cross Sectional ◽  
Blood Samples ◽  
Northern Norway ◽  
Vitamin D Intake

AbstractObjective:To determine the vitamin D status of middle-aged women living in the Norwegian arctic and its relationship with vitamin D intake and exposure to ultraviolet (UV) radiation.Design:Cross-sectional study.Subjects and setting:This study is based on measurements of 25-hydroxyvitamin D (25(OH)D) levels in a sub-sample of the Norwegian component of the EPIC biological bank, which consists of blood samples from a random selection of participants in the Norwegian Women and Cancer Study. From November 2001 until June 2002, 309 blood samples were collected from a total of 443 invited middle-aged women (44–59 years) in northern Norway (65–71°N) (crude response rate, 69.8%). Questionnaire data provided information on dietary sources of vitamin D and UV exposure.Results:Median plasma 25(OH)D concentration for the whole group was 55.0 nmol l−1 (range 8.1–142.8 nmol l−1). Vitamin D intake was a significant predictor of 25(OH)D status (P = 0.0003). The time of the year when the blood sample was collected significantly predicted plasma 25(OH)D level (P = 0.005). Levels of 25(OH)D were positively associated (P = 0.0002) with estimated hours per day of exposure to UV-B radiation. Residing in northern Norway during the summer prior to blood sampling was negatively associated with 25(OH)D concentration (P = 0.001). The prevalence of moderate hypovitaminosis D was highest in January–February, when a quarter of the participants had 25(OH)D concentrations ≤37.5 nmol l−1.Conclusions:Increased ingestion of marine food items that provide vitamin D should be promoted and further studies should be carried out to investigate vitamin D status in arctic populations in relation to both UV exposure and traditional food sources.

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