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The youngest child of heavy metal icon Ozzy Osbourne and talent manager/TV personality Sharon Osbourne, Jack first caught America's attention on the hit reality show The Osbournes, which followed the adventures of Jack and his family. As the show concluded, Jack began starring in another reality series, Jack Osbourne: Adrenaline Junkie. After the first season, he emerged looking like a new person — gone was the thick curly hair, along with 70 pounds of body weight.
Over the next four years, he continued to star in Jack Osbourne: Adrenaline Junkie and, more recently, has ambitiously taken on producer and director roles. In 2011, he produced a documentary about his father, God Bless Ozzy Osbourne, which premiered at the Tribeca Film Festival, and directed a music video for Ozzy's song, "Life Won't Wait." Jack is currently producing additional film and television projects , including webisodes of You Don't Know Jack About MS ™, in partnership with Teva Neuroscience, Inc.
Jack was diagnosed with relapsing-remitting multiple sclerosis (RRMS), the most common form of multiple sclerosis (MS), in 2012. The diagnosis came just three weeks before he and his wife, Lisa, had their daughter, Pearl. Since his diagnosis, Jack has worked as a passionate MS patient advocate, speaking out about the need for MS research and greater awareness. In 2013, he was honored at Nancy Davis' 20th Annual Race to Erase MS Gala for his courage in announcing his diagnosis, as well as for acting as a role model to others who are living with MS.