Limited data suggest that the risk of squamous cell carcinoma is similarly increased after first use as a teenager. Artificial tanning confers little if any protection against solar damage to the skin, nor does use of indoor tanning facilities grant protection against vitamin D deficiency. Data also suggest detrimental effects from use of indoor tanning facilities on the skin’s immune response and possibly on the eyes (ocular melanoma). Knowledge of levels of UV exposure during indoor tanning is very imprecise. Moreover, early studies published had low power to detect long-term associations with artificial UV exposure that become evident only following a prolonged lag period. Although.
