Tom Selleck, best known for his iconic role as Thomas Magnum in Magnum, P.I. and currently starring as Commissioner Frank Reagan on CBS’s Blue Bloods, has faced health rumors in recent years. In 2019, reports claimed his condition was declining and speculated about his possible retirement. By 2021, it was revealed that he suffers from arthritis and uses steroids to manage pain and stay mobile. Despite these challenges, Selleck, now 76, remains committed to his role and has no plans to retire, reassuring fans that Blue Bloods will continue with him on..