Indoor tanning ups all skin cancer rates. (Biomedicine).Artificial sunbathing using ultraviolet lights--a practice already linked to melanoma melanoma: see skin cancer. melanoma Dark-coloured malignant tumour of skin cells that produce the protective skin-darkening pigment melanin. , the rarest but deadliest form of skin cancer--increases the risk of all types of skin cancer, according to according to prep. 1. As stated or indicated by; on the authority of: according to historians. 2. In keeping with: according to instructions. 3. new data. Margaret R. Karagas of Dartmouth Medical School Dartmouth Medical School is the medical school of Dartmouth College, in Hanover, New Hampshire. The school is closely affiliated with Dartmouth-Hitchcock Medical Center (DHMC) in neighboring Lebanon, New Hampshire. in Lebanon, N.H., and her colleagues questioned 603 participants with basal-cell carcinoma carcinoma: see neoplasm. , 293 with squamous-cell carcinoma, and 540 cancerfree people about their history of sun exposure, tanning-salon patronage, and other risk factors for skin cancer. Participants with some history of indoor tanning tanning, process by which skins and hides are converted into leather. Vegetable tanning, a method requiring more than a month even with modern machinery and tanning liquors, employs tannin; its use is shown in Egyptian tomb paintings dating from 3000 B.C. were 1.5 times as likely to have basal-cell carcinoma and 2.5 times as likely to have squamous-cell carcinoma than were volunteers who had never tanned indoors. For those who began using tanning equipment before the age of 20, the risks were particularly high--1.8 and 3.6 times the basic risk for basal-cell and squamous-cell carcinoma, respectively. The researchers report their findings in the Feb. 6 Journal of the National Cancer Institute. --B.H. |
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