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This paper is a comment in response to a review of Vitamin D status and its association with ill health.

Environmental, personal, and genetic determinants of response to vitamin D supplementation in older adults

We aimed to examine genetic and nongenetic determinants of change in serum 25-hydroxyvitamin D (25(OH)D) after supplementation.

What is the optimal level of vitamin D?: Separating the evidence from the rhetoric

New evidence indicates that both high and low 25(OH)D levels may be associated with increased health risks.

Vitamin D deficiency causes airway hyperresponsiveness and increases airway smooth muscle mass in the lungs of female BALB/c mice

We tested whether there is a causal association between vitamin D deficiency, airway smooth muscle (ASM) mass, and the development of airway hyperresponsiveness

Low vitamin D levels are associated with symptoms of depression in young adult males

Results from studies examining associations between serum 25-hydroxyvitamin D (25(OH)D) concentrations and depressive symptoms are equivocal.

Characterization of regulatory dendritic cells differentiated from the bone marrow of UV-irradiated mice

In summary, UV-BMDCs do not express the classical phenotypic or gene expression properties of DCs reported by others as 'regulatory' or 'tolerogenic'.

Maternal vitamin D levels during pregnancy and offspring eating disorder risk in adolescence

This is the first study to link low gestational vitamin D to increased eating disorder risk in female offspring of Caucasian mothers.

Maternal Vitamin D Levels and the Autism Phenotype Among Offspring

We tested whether maternal vitamin D insufficiency during pregnancy is related to the autism phenotype.

Increased levels of solar radiation are associated with reduced type-2 diabetes prevalence: A cross-sectional study of Australian postcodes

Type-2 diabetes is a leading cause of death and disability. Emerging evidence suggests that ultraviolet radiation or sun exposure may limit its development. We used freely available online datasets to evaluate the associations between solar radiation and type-2 diabetes prevalence across Australia.

Infant study shines new light on eczema prevention

A study led by The Kids Research Institute Australia has suggested vitamin D supplementation in babies is no match for sunlight when it comes to preventing eczema.