نتایج جستجو برای: sun exposure
تعداد نتایج: 338401 فیلتر نتایج به سال:
OBJECTIVE To examine whether past high sun exposure is associated with a reduced risk of multiple sclerosis. DESIGN Population based case-control study. SETTING Tasmania, latitudes 41-3 degrees S. PARTICIPANTS 136 cases with multiple sclerosis and 272 controls randomly drawn from the community and matched on sex and year of birth. MAIN OUTCOME MEASURE Multiple sclerosis defined by both ...
Considerable evidence indicates that vitamin D may reduce the risk of several cancers, including breast cancer. This study examined associations of breast cancer with sun exposure, the principal source of vitamin D, and vitamin D receptor gene (VDR) polymorphisms (FokI, TaqI, BglI) in a population-based case-control study of Hispanic, African-American, and non-Hispanic White women aged 35-79 ye...
It has been more than 100 years when it was first appreciated that increased sun exposure reduced risk of dying of cancer. The most beneficial effect of sun exposure is the production of vitamin D in the skin. Recent evidence suggests that most cells in the body not only have a vitamin D receptor but also have the capacity to convert 25-hydroxyvitamin D to 1,25-dihydroxyvitamin D. Once formed 1...
BACKGROUND Melanoma is the most serious type of skin cancer and is caused by a combination of endogenous and exogenous risk factors. Here were describe the clinical and anatomical characteristics of melanoma along with the endogenous and exogenous risk factors in 120 patients diagnosed with cutaneous melanoma in a health care area of the province of Santa Cruz de Tenerife in Spain. PATIENTS A...
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