According to an exclusive report by Sports Chosun, Choi Chang Yup was arrested in September for injecting the illegal drug philopon at his house located in Sillim-dong, Seoul. It's also reported that he was found to have injected the drug back in May with peers in Gangnam. 

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In the past, Choi Chang Yup has made appearances on variety shows 'Human Survival Challenger', 'Problematic Men', dramas 'Faith', 'School 2013', and more.