Question by AJ The DJ: What caused Michael Jackson to have cardiac arrest? It upsets me very much as I type this because he meant so much to me but I’d like to know please. Best answer: Answer by MariaRumor is he was anorexic and was taking various prescription drugs…but the autopsy should be in late today. Answer by Capitain R.I am a HUGE MJ fan, they say it could be medicine that he was taking, theyre gettin reasdy to start the autopsy right now, so just watch the news… We wont know for sure until the autopsy is done… Read more... ...