See accompanying article on page 1588

provide further evidence of the harmful effects of indoor tanning, particularly in the young. They studied a cohort of women who participated in the Nurses ’ Health Study (II). This included more than 70,000 women monitored for 20 years, and the investigators asked whether indoor tanning during youth increased the risk of skin cancer, specifically basal cell carcinoma (BCC), squamous cell carcinoma (SCC), and invasive melanoma. They reported an in-creased risk for all three tumors, particularly BCC, independently associated with tanning bed use before age 35 years. The investiga-tors controlled for confounding demographic factors, most impor-tantly skin type, sun sensitivity, UV index of residence, and sun exposure behavior during youth. They also identified a dose-response effect of indoor tanning, with more frequent use associ-ated with an increased risk of BCC and SCC. In another recent study, Ferrucci et al2 reported a significan