Abstract
Unsupplemented vitamin D status is determined by cutaneous synthesis and food inputs; however, their relative magnitudes are largely unknown. In a cohort of 780 non-supplement-taking adults with a mean serum 25-hydroxyvitamin D [25(OH)D] of 33 (±14) ng/ml we assessed the relationship between serum 25(OH)D and non-food environmental variables. Serum 25(OH)D concentration was adjusted for seasonal influence (which removed 2% of the total variance) and these adjusted values were regressed against factors involved in cutaneous synthesis. Indoor tanning use, sun exposure, and percent of work performed outdoors were significantly positively associated and body mass index (BMI) was significantly negatively associated with 25(OH)D values (P <0.03 for each). Latitude, gender, and age were not significantly correlated (P > 0.10). Season and non-food predictors together explained 13% of the total variance in serum 25(OH)D concentration. Non-traditional food sources need to be investigated as possible vitamin D inputs. This article is part of a Special Issue entitled 'Vitamin D Workshop'.
| Original language | English |
|---|---|
| Pages (from-to) | 146-148 |
| Number of pages | 3 |
| Journal | Journal of Steroid Biochemistry and Molecular Biology |
| Volume | 144 |
| Issue number | PART A |
| DOIs | |
| State | Published - 2014 |
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All Science Journal Classification (ASJC) codes
- Biochemistry
- Clinical Biochemistry
- Endocrinology
- Cell Biology
- Molecular Biology
- Endocrinology, Diabetes and Metabolism
- Molecular Medicine
Cite this
Quantifying the non-food sources of basal vitamin D input. / McDonnell, Sharon L.; French, Christine B.; Heaney, Robert P.
In: Journal of Steroid Biochemistry and Molecular Biology, Vol. 144, No. PART A, 2014, p. 146-148.Research output: Contribution to journal › Review article
}
TY - JOUR
T1 - Quantifying the non-food sources of basal vitamin D input
AU - McDonnell, Sharon L.
AU - French, Christine B.
AU - Heaney, Robert P.
PY - 2014
Y1 - 2014
N2 - Unsupplemented vitamin D status is determined by cutaneous synthesis and food inputs; however, their relative magnitudes are largely unknown. In a cohort of 780 non-supplement-taking adults with a mean serum 25-hydroxyvitamin D [25(OH)D] of 33 (±14) ng/ml we assessed the relationship between serum 25(OH)D and non-food environmental variables. Serum 25(OH)D concentration was adjusted for seasonal influence (which removed 2% of the total variance) and these adjusted values were regressed against factors involved in cutaneous synthesis. Indoor tanning use, sun exposure, and percent of work performed outdoors were significantly positively associated and body mass index (BMI) was significantly negatively associated with 25(OH)D values (P <0.03 for each). Latitude, gender, and age were not significantly correlated (P > 0.10). Season and non-food predictors together explained 13% of the total variance in serum 25(OH)D concentration. Non-traditional food sources need to be investigated as possible vitamin D inputs. This article is part of a Special Issue entitled 'Vitamin D Workshop'.
AB - Unsupplemented vitamin D status is determined by cutaneous synthesis and food inputs; however, their relative magnitudes are largely unknown. In a cohort of 780 non-supplement-taking adults with a mean serum 25-hydroxyvitamin D [25(OH)D] of 33 (±14) ng/ml we assessed the relationship between serum 25(OH)D and non-food environmental variables. Serum 25(OH)D concentration was adjusted for seasonal influence (which removed 2% of the total variance) and these adjusted values were regressed against factors involved in cutaneous synthesis. Indoor tanning use, sun exposure, and percent of work performed outdoors were significantly positively associated and body mass index (BMI) was significantly negatively associated with 25(OH)D values (P <0.03 for each). Latitude, gender, and age were not significantly correlated (P > 0.10). Season and non-food predictors together explained 13% of the total variance in serum 25(OH)D concentration. Non-traditional food sources need to be investigated as possible vitamin D inputs. This article is part of a Special Issue entitled 'Vitamin D Workshop'.
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UR - http://www.scopus.com/inward/citedby.url?scp=84906791303&partnerID=8YFLogxK
U2 - 10.1016/j.jsbmb.2013.10.014
DO - 10.1016/j.jsbmb.2013.10.014
M3 - Review article
VL - 144
SP - 146
EP - 148
JO - Journal of Steroid Biochemistry and Molecular Biology
JF - Journal of Steroid Biochemistry and Molecular Biology
SN - 0960-0760
IS - PART A
ER -