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A-4.1 Epidemiological studies on the health effects of ultraviolet sun exposure in humans

[Contact Person]

Naohito Yamaguchi
Chief, Cancer Information and Epidemiology Division
National Cancer Center Research Institute
Ministry of Health and Welfare
5-1-1 Tsukiji, Chuo-ku 104-0045 Japan
Tel: +81-3-3542-2511 Fax: +81-3-3546-0630
E-mail: nyamaguc@gan2.ncc.go.ip

Total Budget for FY1996-1998

60,740,000 Yen (FY1998; 24,762,000 Yen)

Abstract

The mortality and morbidity of skin malignancies and their precursor lesions were studied in relation to the ultraviolet exposure. The prevalence of solar keratosis was found to be higher in Ieson Okinawa, where the ultraviolet exposure is among the highest in Japan, as compared to Kasai city, Hyogo, with medium ultraviolet exposure. This suggests that the ultraviolet radiation in Japan can cause skin cancer, and further studies are needed for the prevention of skin cancers due to ozone depletion. The mortality rate of skin malignancies was found to be not a good indicator for the change in skin malignancies due to ozone depletion. A good system to monitor the incidence of skin cancers should be developed.

[Key Words]

Solar keratosis, Skin cancer, Epidemiology, Ultraviolet