Predictors of vitamin D-containing supplement use in the Australian population and associations between dose and serum 25-hydroxyvitamin D concentrations
MetadataShow full item record
© 2016 by the authors; licensee MDPI, Basel, Switzerland.Despite concerns about vitamin D deficiency in the Australian population, little is known about the prevalence and predictors of vitamin D-containing supplement use. We described the use of vitamin D-containing supplements, and investigated associations between supplemental vitamin D intake and serum 25-hydroxyvitamin D (25(OH)D) concentrations, using a single 24-h dietary recall from the 2011–2013 Australian Health Survey (n = 12,153; ages = 2 years). Multiple regression models were used to investigate predictors of vitamin D-containing supplement use in adults, and associations between dose and serum 25(OH)D concentrations/vitamin D sufficiency (=50 nmol/L), adjusting for potential confounders. The prevalence of vitamin D-containing supplement use was 10%, 6% and 19% in children, adolescents and adults, respectively. Predictors of vitamin D-containing supplement use in adults included being female, advancing age, higher educational attainment, higher socio-economic status, not smoking, and greater physical activity. After adjusting for potential confounders, a 40 IU (1 µg) increase in vitamin D intake from supplements was associated with an increase of 0.41 nmol/L in serum 25(OH)D concentrations (95% CI 0.35, 0.47; p < 0.001). However, the prevalence of vitamin D-containing supplement use was generally low in the Australian population, particularly for single vitamin D supplements, with most supplement users obtaining only low levels of vitamin D from other supplement types.
This open access article is distributed under the Creative Commons license https://creativecommons.org/licenses/by-nc-sa/4.0/
Showing items related by title, author, creator and subject.
Vitamin D status and predictors of serum 25-hydroxyvitamin D concentrations in Western Australian adolescentsBlack, Lucinda; Jacoby, P.; Burrows, S.; Oddy, W.; Beilin, L.; She Ping-Delfos, W.; Marshall, C.; Holt, P.; Hart, P.; Mori, Takeshi (2014)Despite the importance of skeletal growth during adolescence, there is limited research reporting vitamin D status and its predictors in adolescents. Using prospective data from the Western Australian Pregnancy Cohort ...
Effects of long-term antioxidant supplementation and association of serum antioxidant concentrations with risk of metabolic syndrome in adultsCzernichow, S.; Vergnaud, A.; Galan, P.; Arnaud, J.; Favier, A.; Faure, H.; Huxley, Rachel; Hercberg, S.; Ahluwalia, N. (2009)Background: Limited observational evidence suggests lower antioxidant concentrations in individuals with the metabolic syndrome (MetS); few randomized controlled trials have addressed the effect of multiple antioxidants ...
Serum 25-hydroxyvitamin D concentrations and cardiometabolic risk factors in adolescents and young adultsBlack, Lucinda; Burrows, S.; Lucas, R.; Marshall, C.; Huang, R.; Ping-Delfos, C.; Beilin, L.; Holt, P.; Hart, P.; Oddy, W.; Mori, T. (2016)Evidence associating serum 25-hydroxyvitamin D (25(OH)D) concentrations and cardiometabolic risk factors is inconsistent and studies have largely been conducted in adult populations. We examined the prospective associations ...