For many celebrities, public life is built around appearances, premieres, and performances, which can make personal battles easy to miss. While some stars spoke openly about their diagnosis, others kept it private until much later, surprising fans who never knew what they were facing behind the scenes. Cancer has touched countless lives, including many of the most recognizable names in entertainment. Some fought and recovered, others used their platform to raise awareness, and a few kept working through it all. These are fifteen celebrities whose cancer journeys many people never realized happened.IMDbBen StillerStiller revealed in 2016 that he had secretly battled prostate cancer two years earlier and had fully recovered after surgery.cnx.cmd.push(function() {cnx({playerId: "106e33c0-3911-473c-b599-b1426db57530",}).render("0270c398a82f44f49c23c16122516796");});IMDbChristina ApplegateBefore her multiple sclerosis diagnosis, Applegate survived breast cancer in 2008 and later became an advocate for early detection.IMDbMichael C. HallWhile filming Dexter, Hall quietly underwent treatment for Hodgkin lymphoma and kept working through much of it.IMDbHugh JackmanJackman has dealt with multiple skin cancer removals over the years and has spoken publicly about prevention.IMDbCynthia NixonNixon kept her breast cancer diagnosis private for years before revealing it and becoming active in awareness campaigns.IMDbRobert De NiroDe Niro was diagnosed with prostate cancer in 2003 and successfully treated it while continuing his career.IMDbKylie MinogueHer breast cancer diagnosis in 2005 shocked fans worldwide and led to major awareness campaigns in several countries.IMDbSharon OsbourneOsbourne survived colon cancer after a diagnosis in 2002 and became vocal about regular screening.IMDbKathy BatesBates battled ovarian cancer and later breast cancer, eventually speaking openly about the physical aftermath.IMDbJane FondaFonda has had several cancer scares and treatments, including skin cancer, while staying active in public life.IMDbMark RuffaloRuffalo had a brain tumor removed in 2001, a diagnosis that temporarily paused his rising acting career.IMDbRita WilsonWilson revealed her breast cancer battle in 2015 and later became an advocate for women’s health.IMDbSophia LorenLoren quietly overcame early stage cancer in her later years, a fact many fans never heard about.IMDbRod StewartStewart beat thyroid cancer and kept it private for years before discussing it publicly.IMDbOlivia Newton-JohnHer long and public battle with breast cancer lasted decades, turning her into one of the most visible advocates for cancer awareness in entertainment.The post 15 Celebrities You Didn’t Realize Had Cancer appeared first on Den of Geek.