Prevalence of vitamin D insufficiency in Brazilian adolescents.
Peters BS, dos Santos LC, Fisberg M, Wood RJ, Martini LA.
Ann Nutr Metab. 2009;54(1):15-21. Epub 2009 Feb 5.
PMID: 19194104
DOI: 10.1159/000199454
CONCLUSIONS: The present study suggests that even in a sunny climate like Brazil the prevalence of vitamin D insufficiency in adolescents is high. Most likely this is due to low intakes of vitamin D in this group. Due to the limited extent of natural dietary sources of vitamin D, a policy of vitamin D food fortification should be considered in the future, and in the meantime greater use of vitamin D supplements in this population group should be encouraged to provide the increased amounts of this essential nutrient for optimal health.
Heliotherapy improves vitamin D balance and atopic dermatitis.
Vähävihu K, Ylianttila L, Salmelin R, Lamberg-Allardt C, Viljakainen H, Tuohimaa P, Reunala T, Snellman E.
Br J Dermatol. 2008 Jun;158(6):1323-8. Epub 2008 Mar 20.
PMID: 18363748
DOI: 10.1111/j.1365-2133.2008.08518.x
CONCLUSIONS: A 2-week course of HT significantly improved vitamin D balance by increasing serum calcidiol concentration, and caused a marked healing of AD. These parallel positive responses should be taken into account when the benefits of HT are considered..