US skier Lindsay Vonn says in an interview published Thursday she has battled depression for years. The 28-year-old Olympic gold medallist told People magazine that she takes anti-depressant medication. "Everything about my life seemed so perfect to people, but I struggle like everyone else," Vonn admitted. Vonn said that at one stage in 2008 "I couldn't get out of bed anymore. I felt hopeless, empty, like a zombie."