Why did heath ledger commit suicide?

Heath Ledger kept a chilling diary in preparation for his Oscar-winning portrayal of the Joker in The Dark Knight. The Australian actor died of an accidental overdose of a combination of prescription medications in January 2008. read more

Heath Ledger was born on the fourth of April1979, in Perth, Western Australia. As the story goes, in juniorhigh it was compulsory to do one of two electives, either cookingor drama, and as Heath could honestly not see himself in a cookingclass, he tried his hand at drama. read more

In the German documentary entitled 'Too Young To Die', Kim Ledger, Heath's father, reveals the diary detailing Heath’s dedication to the dark psychotic character and mentions the chilling story of how his son locked himself in a hotel for a month practicing the role. read more

Many people say that his character got to his mind, but it didn't. Heath died months after the filming of the dark knight. His death didn't have anything to do with him mentally either. Heath died of an Accident Prescription Overdose, during the filming of the Imaginarium of Doctor Parnassus. read more