Objective: We estimated how much vitamin D3 young Americans (n = ~ 2,000) produce from their everyday outdoor ultraviolet doses in the North (45°N) and South (35°N) each season of the year with and without vacationing.
Cells were subjected to three small doses of ultraviolet (UV) irradiation (UV dose: 10 mJ/cm UVB and 50 mJ/cm UVA) with a 24-hour recovery time between each dose, in order to mimic repetitive exposure to UV.
Multiple linear regression was employed to investigate the relationship between ultraviolet B dose and colorectal cancer rates while controlling for per capita intake of energy from animal sources, per capita health expenditure, pigmentation, and life expectancy.
Furthermore, the proportion of global variation in incidence of colorectal cancer explained by latitude in this study is consistent with other observational studies on the relationship between ultraviolet B dose and risk of several cancers, including those of the colon (R = 0.68; p < 0.0001), breast (R for the model = 0.55, p < 0.0001), and ovary (R = 0.60, p < 0.0001).
Here we report on the effects of ten low dose ultraviolet (UV) respectively infrared (IR) irradiations of elderly people.
Elmets, C. A., M. J. LeVine, and D. R. Bickers (1985) Action spectrum for induction of immunologic unresponsiveness to dinitrofluorobenzene following in vivo low dose ultraviolet radiation, Photochem.
Simon, J. C., P. D. Cruz, P. R. Bergstresser, and R. E. Tigelaar (1990) Low dose ultraviolet B-irradiated Langerhans cells preferentially activate CD4+ cells of the T helper 2 subset, J. Immunol.
Consequently, the higher the ultraviolet B (UVB) dose cells receive, the more likely is that they suffer an irreparable damage and activate apoptosis.
Dossus et al. (28) found that women born at lower latitudes or in regions with a higher annual or spring/summer ultraviolet radiation (UVR) dose had their menarche 3 to 4 months earlier than women born at higher latitudes or in regions with lower UVR doses.
Hishida, T., Kubota, Y., Carr, A. M. & Iwasaki, H. RAD6-RAD18-RAD5-pathway-dependent RAD6-RAD18-RAD5-pathway-dependent RAD6-RAD18-RAD5-pathway-dependent RAD6-RAD18-RAD5-pathway-dependent RAD6-RAD18-RAD5-pathway-dependent
