scholarly journals Relation of Vitamin D Intake and Sun Exposure to Respiratory Conditions in Hispanics

2016 ◽  
Vol 01 (02) ◽  
Author(s):  
Camacho MA
Keyword(s):  
Vitamin D ◽  
Sun Exposure ◽  
Vitamin D Intake ◽  
Respiratory Conditions

scholarly journals Validation of a Vitamin D Specific Questionnaire to Determine Vitamin D Status in Athletes

Nutrients ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 2732 ◽  
Author(s):  
D. Enette Larson-Meyer ◽  
Corey S. Douglas ◽  
Joi J. Thomas ◽  
Evan C. Johnson ◽  
Jacqueline N. Barcal ◽  
...  
Keyword(s):  
Vitamin D ◽  
Collegiate Athletes ◽  
Sun Exposure ◽  
Ultraviolet B ◽  
Food Record ◽  
Food Diary ◽  
Study Objective ◽  
Supplement Use ◽  
Vitamin D Intake ◽  
Tanning Bed

The study objective was to validate a food frequency and lifestyle questionnaire (FFLQ) to assess vitamin D intake and lifestyle factors affecting status. Methods: Data collected previously during the fall (n = 86), winter (n = 49), and spring (n = 67) in collegiate-athletes (Study 1) and in active adults (n = 123) (Study 2) were utilized. Study 1: Vitamin D intake and ultraviolet B exposure were estimated using the FFLQ and compared to serum 25(OH)D concentrations via simple correlation and linear regression modeling. Study 2: Vitamin D intake from food was estimated using FFLQ and compared to vitamin D intake reported in 7-Day food diaries via paired t-test and Bland–Altman analysis. Results: Study 1: Serum 25(OH)D was not associated with vitamin D intake from food, food plus supplements, or sun exposure, but was associated with tanning bed use (r = 0.39) in spring, supplement use in fall (r = 0.28), and BMI (body mass index) (r = −0.32 to −0.47) across all seasons. Serum 25(OH)D concentrations were explained by BMI, tanning bed use, and sun exposure in fall, (R = 0.42), BMI in winter (R = 0.32), and BMI and tanning bed use in spring (R = 0.52). Study 2: Estimated Vitamin D intake from food was 186.4 ± 125.7 via FFLQ and 148.5 ± 228.2 IU/day via food diary. There was no association between intake estimated by the two methodologies (r = 0.12, p < 0.05). Conclusions: FFLQ-estimated vitamin D intake was not associated with serum 25(OH)D concentration or food-record-estimated vitamin D intake. Results highlight the difficulty of designing/utilizing intake methodologies for vitamin D, as its status is influenced by body size and both endogenous and exogenous (dietary) sources.

Determinants of Postpartum Vitamin D Status in the Caucasian Mother-Offspring Pairs at a Latitude of 52°N: A Cross-Sectional Study

2015 ◽  
Vol 67 (1) ◽  
pp. 33-41 ◽  
Author(s):  
Justyna Czech-Kowalska ◽  
Dariusz Gruszfeld ◽  
Maciej Jaworski ◽  
Dorota Bulsiewicz ◽  
Julita Latka-Grot ◽  
...  
Keyword(s):  
Vitamin D ◽  
Cord Blood ◽  
Sun Exposure ◽  
Maternal Blood ◽  
Cross Sectional Study ◽  
Lower Percentage ◽  
Season Of Birth ◽  
Vitamin D Status ◽  
Cross Sectional ◽  
Vitamin D Intake

Background: High prevalence of vitamin D deficiency in pregnancy is recorded. Aim: To establish determinants of postpartum 25-hydroxyvitamin D (25(OH)D) levels on mothers and offspring. Methods: 25(OH)D level was measured in cord blood and maternal blood collected ≤3 weeks postpartum. Maternal socioeconomic status, vitamin D intake, sun exposure during pregnancy and maternal and neonatal fat mass (FM; dual X-ray absorptiometry) were assessed within 3 weeks postpartum. Results: A total of 174 mother-offspring pairs were enrolled. Maternal 25(OH)D <20 ng/ml was seen in 32 (51%) of summer and 82 (74%) of winter deliveries. Women with 25(OH)D <20 ng/ml had a 2-fold lower percentage of vitamin D intake of ≥800 IU/day than women with 25(OH)D ≥20 ng/ml (p = 0.02). FM (%) was comparable between groups (p > 0.05). Multiple regression analysis revealed the delivery season, prenatal vitamin D intake ≥800 IU/day and duration of supplementation to be the determinants of maternal 25(OH)D level (R2 = 0.26, p < 0.001). Maternal 25(OH)D level, season of birth and duration of maternal supplementation explained 83% of the variance in cord blood 25(OH)D level (R2 = 0.83, p < 0.001). Conclusions: The key determinants of higher maternal vitamin D status were the summer-autumn season of delivery and prenatal use of ≥800 IU/day of vitamin D. The cord blood 25(OH)D level was mainly determined by maternal 25(OH)D level and season of birth.

scholarly journals A framework for measurement and harmonization of pediatric multiple sclerosis etiologic research studies: The Pediatric MS Tool-Kit

2018 ◽  
Vol 25 (8) ◽  
pp. 1170-1177 ◽  
Author(s):  
Sandra Magalhaes ◽  
Brenda Banwell ◽  
Amit Bar-Or ◽  
Isabel Fortier ◽  
Heather E Hanwell ◽  
...  
Keyword(s):  
Risk Factors ◽  
Multiple Sclerosis ◽  
Vitamin D ◽  
Delphi Study ◽  
Sun Exposure ◽  
Small Sample ◽  
Sample Sizes ◽  
Vitamin D Intake ◽  
Measurement Framework ◽  
Small Sample Sizes

Background: While studying the etiology of multiple sclerosis (MS) in children has several methodological advantages over studying etiology in adults, studies are limited by small sample sizes. Objective: Using a rigorous methodological process, we developed the Pediatric MS Tool-Kit, a measurement framework that includes a minimal set of core variables to assess etiological risk factors. Methods: We solicited input from the International Pediatric MS Study Group to select three risk factors: environmental tobacco smoke (ETS) exposure, sun exposure, and vitamin D intake. To develop the Tool-Kit, we used a Delphi study involving a working group of epidemiologists, neurologists, and content experts from North America and Europe. Results: The Tool-Kit includes six core variables to measure ETS, six to measure sun exposure, and six to measure vitamin D intake. The Tool-Kit can be accessed online ( www.maelstrom-research.org/mica/network/tool-kit ). Conclusion: The goals of the Tool-Kit are to enhance exposure measurement in newly designed pediatric MS studies and comparability of results across studies, and in the longer term to facilitate harmonization of studies, a methodological approach that can be used to circumvent issues of small sample sizes. We believe the Tool-Kit will prove to be a valuable resource to guide pediatric MS researchers in developing study-specific questionnaire

scholarly journals Knowledge and attitudes about vitamin D and sunlight exposure in premenopausal women living in Jeddah, and their relationship with serum vitamin D levels

2021 ◽  
Vol 40 (1) ◽  
Author(s):  
Tahani A. Zareef ◽  
Robert T. Jackson
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Odds Ratio ◽  
Premenopausal Women ◽  
Sun Exposure ◽  
Sunlight Exposure ◽  
Vitamin D Status ◽  
Saudi Women ◽  
Vitamin D Intake ◽  
Insufficient Knowledge

Abstract Background Saudi women are at risk of vitamin D deficiency because they are fully covered by traditional clothing and because of their indoor lifestyle. The latest national study reported that vitamin D deficiency (serum 25(OH)D < 50 nmol/L) affects 72% of young Saudi women. Because little information is available regarding knowledge on vitamin D, attitudes toward sun exposure, and the vitamin D status of premenopausal women in Jeddah, more research is necessary in order to develop effective intervention programs. The purpose of this study is to explore how the relationship between knowledge of vitamin D and attitudes about sun exposure affect the serum 25(OH)D levels in premenopausal Saudi women. Methods This cross-sectional study included 257 women aged 20–50 years attending the primary care clinic in Jeddah, Saudi Arabia. Participants completed questionnaires about socio-demographics, dietary vitamin D intake, attitudes toward sun exposure, and were tested on their knowledge of vitamin D. Serum 25(OH)D was evaluated using chemiluminescent microparticle immunoassay. Results Although 99% of participants had heard of vitamin D and 91% knew that sunlight exposure is a primary source of vitamin D, they also expressed the feeling of having insufficient knowledge regarding vitamin D sources. Furthermore, the majority of participants had negative attitudes toward sun exposure. High fish consumption was associated with a higher level of knowledge regarding vitamin D. The binary logistic regression indicated that low levels of knowledge about vitamin D were associated with low education levels (odds ratio = 0.397, 95% CI = [0.206, 0.765], p = 0.019) and with being married (odds ratio = 0.522, 95% CI = [0.281, 0.971], p = 0.04). In addition, spending time outside in the sun was significantly associated with increased serum 25(OH)D levels (p = 0.006), and the wearing of colored abaya was significantly associated with increased serum 25(OH)D levels (p = 0.008). Conclusion Suboptimal vitamin D status and insufficient knowledge of vitamin D intake sources are common in premenopausal women in Jeddah. Based on this data, health professionals could provide medical intervention to the most vulnerable female patients, as well as offer clear guidelines and information to the general public.

scholarly journals Sun Exposure, Vitamin D Intake and Vitamin D Status in Davis, CA.

2008 ◽  
Vol 22 (S1) ◽  
Author(s):  
Laura Marie Hall ◽  
Charles B. Stephensen ◽  
Pavel A. Aronov ◽  
Bruce D. Hammock ◽  
Michael G. Kimlin ◽  
...  
Keyword(s):  
Vitamin D ◽  
Sun Exposure ◽  
Vitamin D Status ◽  
Vitamin D Intake

scholarly journals Vitamin D deficiency during pregnancy and its associated factors among third trimester Malaysian pregnant women

2019 ◽  
Author(s):  
Fui Chee Woon ◽  
Yit Siew Chin ◽  
Intan Hakimah Ismail ◽  
Marijka Batterham ◽  
Amir Hamzah Abdul Latiff ◽  
...  
Keyword(s):  
Vitamin D ◽  
Pregnant Women ◽  
Vitamin D Deficiency ◽  
Associated Factors ◽  
Sun Exposure ◽  
Food Sources ◽  
Third Trimester ◽  
Supplement Use ◽  
Vitamin D Intake ◽  
Vitamin D Levels

AbstractBackgroundDespite perennial sunshine, vitamin D deficiency is prevalent among Malaysian especially pregnant women.ObjectiveTo determine the vitamin D status and its associated factors among third trimester pregnant women attending government health clinics in Selangor and Kuala Lumpur, Malaysia.MethodsInformation on socio-demographic characteristics, obstetrical history, vitamin D intake, supplement use, and sun exposure were obtained through face-to-face interviews. Serum 25-hydroxyvitamin D concentration was measured and classified as deficient (< 30 nmol/L), insufficient (30-50 nmol/L), and sufficient (≥ 50 nmol/L).ResultsOf the 535 pregnant women recruited, 42.6% were vitamin D deficient. They consumed an average of 8.7 ± 6.7 μg of vitamin D daily. A total of 80.4% of the vitamin D were obtained from the food sources, while 19.6% were from dietary supplements. Fish and fish products showed the highest contribution to vitamin D intake (35.8%). The multivariate generalized linear mixed models, with clinic as a random effect, indicates that higher intake of vitamin D is associated with lower risk of vitamin D deficiency among pregnant women (OR = 0.96; 95% CI = 0.93-0.99). Non-Malay pregnant women had lower odds of having vitamin D deficiency (OR = 0.13; 95% CI = 0.04-0.37) compared to Malays. No associations were found between age, educational level, monthly household income, work status, gravidity, parity, pre-pregnancy body mass index, total hours of sun exposure, total percentage of body surface area, and sun exposure index per day with vitamin D deficiency.ConclusionsVitamin D deficiency is prevalent among Malaysian pregnant women. Considering the possible adverse obstetric and fetal outcomes of vitamin D deficiency during pregnancy, antenatal screening of vitamin D levels and nutrition education should be emphasised by taking into consideration ethnic differences.

scholarly journals Sun behaviour and physical activity associated with autumn vitamin D status in 4–8-year-old Danish children

2018 ◽  
Vol 21 (17) ◽  
pp. 3158-3167 ◽  
Author(s):  
Charlotte Mortensen ◽  
Christian Mølgaard ◽  
Hanne Hauger ◽  
Michael Kristensen ◽  
Camilla T Damsgaard
Keyword(s):  
Physical Activity ◽  
Vitamin D ◽  
School Children ◽  
Sun Exposure ◽  
Vitamin D Supplementation ◽  
Fat Free Mass ◽  
Protection Factor ◽  
Hydroxyvitamin D ◽  
Vitamin D Intake ◽  
25 Hydroxyvitamin D

AbstractObjectiveTo explore determinants of serum 25-hydroxyvitamin D (s-25(OH)D) during autumn in young, Caucasian children not consuming vitamin D-fortified foods or supplements, and explore differences in sun behaviours between pre-school and school children.DesignIn September–October, s-25(OH)D was measured by LC–MS/MS; physical activity, sun behaviours and vitamin D intake were assessed with questionnaires.SettingBaseline data from the ODIN Junior trial at 55°N.SubjectsChildren aged 4–8 years (n130), of whom 96% gave blood samples.ResultsMean s-25(OH)D was 56·8 (sd12·5) nmol/l and positively associated with fat-free mass index (P=0·014). Children being active 6–7 h/week had 5·6 (95% CI 1·1, 10·0) nmol/l higher s-25(OH)D than less active children (P=0·014). Children seeking shade sometimes or rarely/never had 7·0 (95% CI 1·2, 12·9;P=0·018) and 7·2 (95% CI 0·8, 13·6;P=0·028) nmol/l higher s-25(OH)D, respectively, than children always/often seeking shade. Pre-school children had more sun-safe behaviour than school children in terms of use of a hat, sunscreen and sunscreen sun protection factor (P<0·05). In school but not pre-school children, using a hat rarely/never was associated with 12·1 (95% CI 2·5, 21·7;P=0·014) nmol/l higher s-25(OH)Dv. always/often (Pinteraction=0·019). Vitamin D intake was not associated with s-25(OH)D (P=0·241).ConclusionsPhysical activity and sun behaviours are associated with s-25(OH)D in young children. Identifying factors influencing autumn s-25(OH)D is relevant to optimize levels before sun exposure diminishes. Strategies to reduce risk of inadequacy should consider risk of skin cancer and sunburn, and could include fortification and/or vitamin D supplementation.

scholarly journals Vitamin D Intake Determines Vitamin D Status of Postmenopausal Women, Particularly Those with Limited Sun Exposure

2014 ◽  
Vol 144 (5) ◽  
pp. 681-689 ◽  
Author(s):  
Ting-Yuan David Cheng ◽  
Amy E. Millen ◽  
Jean Wactawski-Wende ◽  
Shirley A. A. Beresford ◽  
Andrea Z. LaCroix ◽  
...  
Keyword(s):  
Vitamin D ◽  
Postmenopausal Women ◽  
Sun Exposure ◽  
Vitamin D Status ◽  
Vitamin D Intake

Sun Exposure, Vitamin D Intake and Progression to Disability among Veterans with Progressive Multiple Sclerosis

2011 ◽  
Vol 37 (1) ◽  
pp. 52-57 ◽  
Author(s):  
Tzu-Yun McDowell ◽  
Sania Amr ◽  
William J. Culpepper ◽  
Patricia Langenberg ◽  
Walter Royal ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Vitamin D ◽  
Sun Exposure ◽  
Progressive Multiple Sclerosis ◽  
Vitamin D Intake

scholarly journals The Influence of Vitamin D Intake and Status on Mental Health in Children: A Systematic Review

Nutrients ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 952
Author(s):  
Dominika Głąbska ◽  
Aleksandra Kołota ◽  
Katarzyna Lachowicz ◽  
Dominika Skolmowska ◽  
Małgorzata Stachoń ◽  
...  
Keyword(s):  
Mental Health ◽  
Systematic Review ◽  
Vitamin D ◽  
Mental Health Problems ◽  
Sun Exposure ◽  
Well Being ◽  
Health Problems ◽  
Vitamin D Supplementation ◽  
Compulsive Disorder ◽  
Vitamin D Intake

A potential role of vitamin D in some components of mental health is currently suggested, but the analyses are conducted mainly for adults, while for young individuals mental health is especially important, due to its lifelong effects. The aim of the study was to analyze the association between vitamin D intake or status and mental health in children within a systematic review of literature, including both intervention and observational studies. The literature search was conducted according to the PRISMA guidelines and it covered peer-reviewed studies included in databases of PubMed and Web of Science until October 2019. The studies presenting either vitamin D intake, or vitamin D status in human subjects were allowed (excluding subjects with intellectual disabilities, eating disorders and neurological disorders), while for mental health the various methods of assessment and wide scope of factors were included. The bias was assessed using the Newcastle–Ottawa Scale (NOS). The review was registered in the PROSPERO database (CRD42020155779). A number of 7613 studies after duplicate removing were extracted by two independent researchers, followed by screening and assessment for eligibility, conducted by two independent researchers in two steps (based on title and abstract). Afterwards, the full texts were obtained and after reviewing, a number of 24 studies were included. The synthetic description of the results was prepared, structured around exposure (vitamin D supplementation/status) and outcome (components of mental health). The included studies were conducted either in groups of healthy individuals, or individuals with mental health problems, and they assessed following issues: behavior problems, violence behaviors, anxiety, depressive symptoms/depression, aggressive disorder, psychotic features, bipolar disorder, obsessive compulsive disorder, suicidal incident, as well as general patterns, as follows: mental health, level of distress, quality of life, well-being, mood, sleep patterns. The vast majority of assessed studies, including the most prominent ones (based on the NOS score) supported potential positive influence of vitamin D on mental health in children. As a limitation of the analysis, it should be indicated that studies conducted so far presented various studied groups, outcomes and psychological measures, so more studies are necessary to facilitate comparisons and deepen the observations. Nevertheless, vitamin D intake within a properly balanced diet or as a supplementation, except for a safe sun exposure, should be indicated as an element supporting mental health in children, so it should be recommended to meet the required 25(OH)cholecalciferol blood level in order to prevent or alleviate mental health problems.

Sign in / Sign up

Export Citation Format

Share Document