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Beneficial health effects of ultraviolet radiation: expert review and conference report

Carcinogenic effects of ultraviolet radiation (UVR) with reference to skin cancer are the basis of widely implemented recommendations to avoid sun exposure. Whether the benefits of "restrictive sun policies" outweigh their potential harms due to diminished beneficial effects of sunlight exposure remain a matter of controversy.  

No dose-dependent increase in fracture risk after long-term exposure to high doses of retinol or beta-carotene

This intervention study found no increase in fracture risk among 2,322 adults who took a controlled, high-dose retinol supplement (25,000 IU retinyl...

Variation in incidence of pediatric Crohn's disease in relation to latitude and ambient ultraviolet radiation: A systematic review and analysis.

In previous studies, CD incidence increased with higher geographic latitude in the Northern Hemisphere.

Risks and Benefits of UV Radiation

While UV radiation is a skin carcinogen, this should not obscure the growing evidence that sunlight has significant health benefits, including impacts on cardiovascular and metabolic health.

Cross-presentation of cutaneous melanoma antigen by migratory XCR1+CD103− and XCR1+CD103+ dendritic cells

This report provides new insight into the functional specialization within the broad network of dendritic cells that are responsible for skin immunosurveillance

A randomised, controlled clinical trial of narrowband UVB phototherapy for clinically isolated syndrome: The PhoCIS study

This study provides a basis for further studies to determine if there are any benefits of the therapeutic effects of narrowband UVB radiation on MS progression

25-hydroxyvitamin D3 status is associated with developing adaptive and innate immune responses in the first 6 months of life

Vitamin D status in early life has been linked to the risk of allergic disease in multiple observational studies.

Association between respiratory syncytial viral disease and the subsequent risk of the first episode of severe asthma in different subgroups of high-risk Australian children: a whole-of-population-based cohort study

To determine the contribution of RSV to the subsequent development of severe asthma in different subgroups of children at risk of severe RSV disease.

Airway-associated adipose tissue accumulation is increased in a kisspeptin receptor knockout mouse model

Airway-associated adipose tissue increases with body mass index and is a local source of pro-inflammatory adipokines that may contribute to airway pathology in asthma co-existing with obesity. Genetic susceptibility to airway adiposity was considered in the present study through kisspeptin/kisspeptin receptor signalling, known to modulate systemic adiposity and potentially drive airway remodelling. 

Associations between sun exposure, skin pH, and epidermal permeability in pregnancy: A longitudinal observational study

Little is known about how sun exposure may affect the maternal skin barrier during pregnancy when many hormonal and physiological changes occur. In this longitudinal observational study, 50 pregnant women were recruited at 18-24 weeks' gestation, 25 in summer-autumn, and 25 in winter-spring. At three time points in pregnancy at 18-24, 28-30, and 36-38 weeks' gestation, participants completed a validated sun exposure questionnaire and had skin permeability and surface pH measured on the volar forearm.