نتایج جستجو برای: sun exposure
تعداد نتایج: 338401 فیلتر نتایج به سال:
Changes in the pattern of sun exposure and sun protection in young children from tropical Australia.
BACKGROUND Australia has one of the highest rates of skin cancer globally. Lifetime risk is associated with childhood sun exposure. OBJECTIVE We sought to investigate whether skin cancer prevention programs have resulted in improvements in sun-exposure and sun-protection behavior among young children in tropical Australia. METHODS Two cohorts of 12-to 35-month-old children from Townsville, ...
PURPOSE To assess the relationships of sun exposure history, supplementation and environmental factors to vitamin D levels in multiple sclerosis (MS) patients and to evaluate the associations between sun exposure and MRI measures. METHODS This study included 264 MS patients (mean age 46.9±10 years, disease duration 14.6±10 years; 67.8% relapsing-remitting, 28% secondary progressive and 4.2% p...
The present prospective study evaluated sun exposure and sun protection behaviours in patients diagnosed with a precancerous or cancerous skin lesion. Following signed informed consent, patients were given a questionnaire regarding sun protection and sun exposure behaviour. There were 50 patients (27 men, 23 women) with a mean age of 59 years. Following diagnosis of a cancerous or precancerous ...
The objective of this study was to (1) to determine the contribution of moderate sun bed exposure to serum 25(OH)D(3) levels; (2) to estimate the decay time of a high 25(OH)D(3) level obtained by sun bed exposure; and (3) to evaluate if the recommended ingestion of vitamin D is sufficient to maintain the 25(OH)D(3) concentration obtained by sun bed exposure. Ten volunteers (20-35 y.o.), skin ty...
Cutaneous cholecalciferol synthesis has not been considered in making recommendations for vitamin D intake. Our objective was to model the effects of sun exposure, vitamin D intake, and skin reflectance (pigmentation) on serum 25-hydroxyvitamin D (25[OH]D) in young adults with a wide range of skin reflectance and sun exposure. Four cohorts of participants (n = 72 total) were studied for 7-8 wk ...
Sun exposure is the main environmental risk factor for melanoma, but the timing of exposure during life that confers increased risk is controversial. Here we provide the first report of the association between lifetime and age-specific cumulative ultraviolet exposure and cutaneous melanoma in Queensland, Australia, an area of high solar radiation, and examine the association separately for fami...
The aim of this article was to assess the associations of serum 25-hydroxyvitamin D [25(OH)D] and daily sun exposure time with myopia in Korean adults.This study is based on the Korea National Health and Nutrition Examination Survey (KNHANES) of Korean adults in 2010-2012; multiple logistic regression analyses were performed to examine the associations of serum 25(OH)D levels and daily sun expo...
BACKGROUND Previous studies have reported an association between sun exposure and improved cutaneous melanoma (CM) survival. We analysed the association of UV exposure with prognostic factors and outcome in a large melanoma cohort. METHODS A questionnaire was given to 289 (42%) CM patients at diagnosis (Group 1) and to 402 CM patients (58%) during follow-up (Group 2). Analyses were carried ou...
Hardly a week goes by when the attention of the scientific press and the general public is not focused on a new report about the health effects of sunshine. Most studies of the effects of strong or prolonged ultraviolet radiation (UVR) exposure on the skin have emphasized the importance of sun avoidance and protection against sun exposure to reduce skin cancer risk. In recent years, though, the...
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