There are things that people develop cravings for that psychologists may not recognize as true addictions. One of these is tanning. Tanning ¬– whether outside or in tanning booths ¬– may actually be addictive, according to researchers at UTMB. The scientists published a study in the journal Archives of Dermatology that found that up to 53 percent of beachgoers met the diagnostic criteria to be classified as "ultraviolet light tanning-dependent."