Justin Bieber's recent antics 'caused by growing dependence on steroids which helped him bulk up'

Justin Bieber's recent antics 'caused by growing dependence on steroids which helped him bulk up'

Pop star Justin Bieber has become increasingly dependent on steroids which has caused his recent bizarre behaviour. According to The Sun the 19-year-old has been using Clenbuterol, a diet drug which is most commonly used on the horses.