CONTEXT Exposure to UV-B radiation in sunlight has been shown to increase the risk of cataract formation in high-risk occupational groups, but risk to the population has not been quantified. OBJECTIVES To determine the ocular exposure to UV-B radiation in sunlight for a population of older persons and to determine the association between UV-B and lens opacities. DESIGN The Salisbury Eye Eva...

PURPOSE Current standards and guidelines aimed at preventing retinal phototoxicity during intentional exposures do not specifically evaluate the contribution of endogenous photosensitizers. However, certain retinal diseases are characterized by abnormal accumulations of potential photosensitizers such as lipofuscin bisretinoids in the retinal pigment epithelium (RPE). We sought to determine the...

exploring the relationship between sunlight exposure and ICU mortality [1]. Interestingly, less daylight exposure prior to ICU admission was associated with a reduction in ICU mortality. While the authors mention the infl u ence of light on the development of delirium, it is also recognized that delirium is an independent risk factor for death [2-4]. However, the authors did not adjust for deli...

OBJECTIVE To determine the associations between serum levels of vitamin D, sunlight exposure, and knee cartilage loss cross-sectionally and longitudinally in older adults. METHODS A total of 880 randomly selected subjects (mean age 61 years [range 51-79 years], 50% women) were studied at baseline, and 353 of these subjects were studied 2.9 years later. Serum levels of 25-hydroxyvitamin D (25[...

Does the level of sunlight affect the tipping percentage in taxicab rides in New York City? We examined this question using data on 13.82 million cab rides from January to October in 2009 in New York City combined with data on hourly levels of solar radiation. We found a small but statistically significant positive relationship between sunlight and tipping, with an estimated tipping increase of...

The sunlight has an important role in metabolism of calcium ( Ca) and phosphorus ( P). The sunlight has different effects in different places. Therefore  the pattern of metabolic disease depends upon geographical place. In this investigation two groups of workers( one group working in shadow and the other under the sunshine) were chosen as control and experimental groups respectively.these two ...

sun light accompany with rest and fresh air is beneficial for maintenance of health. although scientific and laboratory witnesses have shown the relationship between light exposure and mental health, the live experience of pleasure feeling of sunlight is far more than what is accepted by experimental and observational researches. patient with affective disorders have been treated by increasing ...

Sunlight-related biological effects such as skin cancer, sunburning, and synthesis of vitamin D in the body have been found to be very low in people in the midregion of Saudi Arabia. The present studies were undertaken to measure the sunburning-carcinogenic ultraviolet light (UV) radiation (UV-B) in natural sunlight in the city of Riyadh (25 degrees north latitude). The average noontime inciden...

Vitamin D is one of the critical factors for female reproductive health which may have protective activities against many cancer types, including breast cancer. This vitamin is a secosteroid hormone which regulates the expression of a large number of genes in reproductive tissues which could emphasize the important role of this vitamin in female reproduction and health (Shao, et al., 2013). Vit...