Skin Color Change in Caucasian Postmenopausal Women Predicts Summer-Winter Change in 25-Hydroxyvitamin D: Findings from the ANSAViD Cohort Study

Macdonald, Helen; Mavroeidi, Alexandra; Aucott, Lorna; Diffey, Brian; Fraser, William D.; Ormerod, Anthony; Reid, David M.

doi:10.1210/jc.2010-2032

Cited by 34 publications

(33 citation statements)

References 42 publications

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“…In addition, the study population comprised a racially and ethnically diverse sample of schoolchildren with a large gradation in skin colors compared to previous studies (17, 18, 34, 35). This study was limited by its cross-sectional nature.…”

Section: Discussionmentioning

confidence: 99%

Association of serum 25-hydroxyvitamin D with race/ethnicity and constitutive skin color in urban schoolchildren

Harris²,

Dwyer³

et al. 2014

Journal of Pediatric Endocrinology and Metabolism

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The objective of this study was to determine the extent to which constitutive skin color explains racial/ethnic differences in serum 25-hydroxyvitamin D (25OHD) concentrations in urban schoolchildren. Analysis of covariance (ANCOVA) was used to determine associations of 25OHD with parent-reported race/ethnicity and constitutive skin color as measured by reflectance colorimeter [individual typology angle (ITA°; higher value corresponds to lighter skin)] in 307 Greater Boston schoolchildren aged 9–15 during October–December 2011. Nearly 60% of all children were inadequate in 25OHD (<20 ng/mL). Prevalence of inadequate 25OHD differed by race/ethnicity (p<0.001): white (46.6%), black (74.5%), Hispanic (64.7%), Asian (88.9%), and multi-racial/other (52.7%). Serum 25OHD increased 0.6 ng/mL per 10° increase in ITA° value (p<0.001). The prediction of 25OHD by race/ethnicity was slightly stronger than the prediction by skin color in separate models (R2=0.19, R2=0.16, respectively). Most of the variability in 25OHD in race/ethnicity was due to constitutive skin color in this group of racially diverse US children.

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Section: Discussionmentioning

confidence: 99%

Association of serum 25-hydroxyvitamin D with race/ethnicity and constitutive skin color in urban schoolchildren

Harris²,

Dwyer³

et al. 2014

Journal of Pediatric Endocrinology and Metabolism

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“…In the first 2 weeks, a single session of 0.7 to 4.2 SED is equivalent to a few days of summer sunlight received by free-living women in Aberdeen. 53,54 Patients had received a median of 11.8 SED midway and a median of 39.1 SED over the complete study.…”

Section: Discussionmentioning

confidence: 99%

Effects of ultraviolet light on human serum 25-hydroxyvitamin D and systemic immune function

Milliken

Wassall

Lewis

et al. 2012

Journal of Allergy and Clinical Immunology

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“…Body surface area (BSA) exposure, previous sun exposure and holidays abroad were assessed by a questionnaire adapted from a previous study [16]. At the end of each visit, participants were given two polysulphone film badges which measure sunlight exposure (UVB radiation) and were instructed to wear the badges on their outdoor clothing for seven consecutive days (badge A for 4 days and badge B for 3 days).…”

Section: Sunlight Exposurementioning

confidence: 99%

The relationship between vitamin D status and muscle strength in young healthy adults from sunny climate countries currently living in the northeast of Scotland

et al. 2017

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The relationship between vitamin D status and muscle strength in young healthy adults from sunny climate countries currently living in the northeast of Scotland. Osteoporosis International, 28(4), pp. 1433-1443. (doi:10.1007 This is the author's final accepted version.There may be differences between this version and the published version. 1 Abstract SummaryThe current study examined the relationship between vitamin D status and muscle strength in young healthy adults: residents (> 6 months) and newcomers (0-3 months), originally from sunny climate countries but currently living in the northeast of Scotland. Our longitudinal data found a positive, albeit small, relationship between vitamin D status and knee extensor isometric strength. IntroductionVitamin D has been suggested to play a role in muscle health and function, but studies so far have been primarily in older populations for falls prevention and subsequent risk of fractures.

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Skin Color Change in Caucasian Postmenopausal Women Predicts Summer-Winter Change in 25-Hydroxyvitamin D: Findings from the ANSAViD Cohort Study

Abstract: Skin color change between summer and winter predicts seasonal 25(OH)D change. Low vitamin D status in obese women was not due to reduced sun exposure, suggesting that increased requirements or inaccessibility of vitamin D stores may be responsible.

Cited by 34 publications

References 42 publications

Association of serum 25-hydroxyvitamin D with race/ethnicity and constitutive skin color in urban schoolchildren

Association of serum 25-hydroxyvitamin D with race/ethnicity and constitutive skin color in urban schoolchildren

Effects of ultraviolet light on human serum 25-hydroxyvitamin D and systemic immune function

The relationship between vitamin D status and muscle strength in young healthy adults from sunny climate countries currently living in the northeast of Scotland

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