Pop legend David Bowie has warned kids to stay away from drugs, because experimenting with illegal substances in the 1970s has ruined his memory. The glam rocker indulged heavily in the narcotics on offer during his heyday and was addicted to cocaine for several years. Although he successfully kicked his habit, Bowie claims he has been left with life-long side effects. He says, "It left me with emotional damage. My mind is like Swiss cheese. Unbelievable holes in my memory."