منابع مشابه
Ultraviolet radiation, vitamin D and multiple sclerosis.
There is compelling epidemiological evidence that the risk of developing multiple sclerosis is increased in association with low levels of sun exposure, possibly because this is associated with low vitamin D status. Recent work highlights both vitamin D and non-vitamin D effects on cellular immunity that suggests that higher levels of sun exposure and/or vitamin D status are beneficial for both...
متن کاملUltraviolet radiation exposure, vitamin D, and cancer.
This paper reviews briefly the evidence for an association between various measures of UV radiation (UVR) exposure and the development of cancer. Issues such as data quality, study design, measurement variation, comparability of studies, and quantification of UV exposure in relation to skin cancer are discussed. A range of exposure, based on skin type, might be appropriate: from 5 min a day thr...
متن کاملInfluenza, solar radiation and vitamin D.
The annual death numbers of influenza and pneumonia in Norway were studied for the time period 1980-2000. No direct relationships were found with the variations of the annual UVB fluences, probably due to the fact that these variations did not exceed 30%. However, there was a very pronounced seasonal variation of both influenza deaths and pneumonia deaths, the vast majority occurring during the...
متن کاملSolar and Ultraviolet Radiation
Terrestrial life is dependent on radiant energy from the sun. Solar radiation is largely optical radiation [radiant energy within a broad region of the electromagnetic spectrum that includes ultraviolet (UV), visible (light) and infrared radiation], although both shorter wavelength (ionizing) and longer wavelength (microwaves and radiofrequency) radiation is present. The wavelength of UV radiat...
متن کاملCancer protection related to solar ultraviolet radiation, altitude and vitamin D.
A whole host of epidemiological studies have reported lower cancer rates and mortality in high-altitude regions. These studies are reviewed and discussed in detail. Evidence for the salutary role of vitamin D in protecting against cancer and other maladies will also be reviewed and discussed. The dependence of vitamin D production on sunlight and its enhancement with altitude will be demonstrat...
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ژورنال
عنوان ژورنال: American Journal of Public Health
سال: 2007
ISSN: 0090-0036,1541-0048
DOI: 10.2105/ajph.2006.091736