1. Sunlight ultraviolet (UV) exposure can be highly damaging to biological tissues, being known to cause cellular damage and immunosuppression in humans and rodents, and depletion of carotenoid-based sexual plumage coloration in birds (i.e. photobleaching). However, it remains unknown whether sunlight may cause photobleaching in living tissues that comprise sexual signals such as bare parts in ...

The analysis by Brondum-Jacobsen and colleagues of skin cancer as a marker for sun exposure and its inverse association with all-cause mortality has been criticized for the immortal person-time bias. Inappropriately using prospective survival analysis for a retrospective study suggested a dramatic halving of the hazard ratio of allcause death in individuals with non-melanoma skin cancer (NMSC) ...

Clinical question " Is sunlight an effective treatment for jaundice in term infants? " A women's health educator at Southern Health wanted to know if there was any evidence that sunlight helps to reduce physiological jaundice in healthy term infants. The formulated search question followed a standard patients/interventions/comparisons/outcomes (PICO) format. Patients were term newborn infants w...

BACKGROUND Previous research has suggested that vitamin D and sunlight are related to cardiovascular outcomes, but associations between sunlight and risk factors have not been investigated. We examined whether increased sunlight exposure was related to improved cardiovascular risk factor status. METHODS Residential histories merged with satellite, ground monitor, and model reanalysis data wer...

BACKGROUND Previous experimental studies showed that single ultraviolet B (UVB) light irradiation increased levels of 8-hydroxy-2'-deoxyguanosine (8-OHdG), a well-established biomarker of carcinogenesis and oxidative DNA damage, in epithelial cells in animals and humans. We conducted for the first time an epidemiologic study to investigate the correlations among levels of oxidative DNA damage, ...

OBJECTIVES: Recent studies have shown a high prevalence of hypovitaminosis D, defined as a serum 25-hydroxyvitamin D level less than 30 ng/ml, in both healthy populations and patients with chronic kidney disease. Patients undergoing kidney transplant are at an increased risk of skin cancer and are advised to avoid sunlight exposure. Therefore, these patients might share two major risk factors f...

OBJECTIVE To examine the association of sunlight exposure and antioxidant level with age-related macular degeneration (AMD). METHODS Four thousand seven hundred fifty-three participants aged 65 years or older in the European Eye Study underwent fundus photography, were interviewed for adult lifetime sunlight exposure, and gave blood for antioxidant analysis. Blue light exposure was estimated ...

A clinical epidemiological study has been conducted as apart of research project investigating chronic exposure to solar ultraviolet radiation (UVR) as a factor contributing to the onset of age-related macular degeneration (ARMD). The study included 623 subjects older than 50 from two different geographic areas, one with high solar radiation (the island of Solta - Region 1) and the other (Zagre...