He started partying heavily, and made headlines on 21 April 2003, when he was admitted to a child psychiatric ward for an addiction to Ox圜ontin. On his 13th birthday, Osbourne got drunk for the first time on whisky by the time he was 14, he was drinking regularly and had started smoking marijuana. Osbourne also helped his mother in managing his father's annual touring festival, Ozzfest, advising her about up-and-coming bands. After Sharon stopped managing that band, Osbourne started A&R scouting for Epic Records, where his father had been on for many years. At 14 he was offered an internship at Virgin Records, where his mother was managing the band The Smashing Pumpkins. He returned to England for a year before returning to Los Angeles, where he was enrolled into the special needs Park Century School. At the time, he was studying at a Christian school in Los Angeles. One aspect of his life that constant moving did affect was his school life, and Osbourne soon despised going to school, which was not helped by the fact that he was diagnosed with a form of dyslexia at the age of eight, and ADHD at the age of 10. In spite of moving so many times at a young age, Osbourne did not find it disruptive. When Osbourne was 11, the family moved back again to Southern California, this time to Beverly Hills. For the first six years of his life, Jack lived in the Chiltern Hills in Buckinghamshire, then his parents moved the family to Los Angeles, America, but a year later the family returned to Buckinghamshire. Jack Osbourne has stated that his childhood was 'perfectly happy and contented'. Osbourne was born in London to heavy metal singer Ozzy Osbourne of Black Sabbath, and his wife and manager, Sharon (née Levy).

In 2016, he and his father Ozzy travelled the world in the History Channel reality series Ozzy & Jack's World Detour. Osbourne has since pursued a career as a fitness and travel reporter, presenting shows such as Jack Osbourne: Adrenaline Junkie (2005–2009) and BBC's Saving Planet Earth (2007). He starred on MTV's reality series The Osbournes (2002–2005), along with his father, mother Sharon, and sister Kelly. He is the son of heavy metal singer Ozzy Osbourne, and Sharon Osbourne. Jack Joseph Osbourne (born 8 November 1985) is an English media personality with dual American and British citizenship.

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