Posted 23 minutes agoSubscribe to BuzzFeed Daily NewsletterCaret DownDiane Keaton's Cause Of Death Has Been Revealed By Her FamilyThe family of the legendary actor also shared a way for fans to honor her memory.by Marita VlachouHuffPost WriterFacebookPinterestLink The family of Diane Keaton revealed her cause of death in a statement shared with People magazine on Wednesday, less than a week after the Oscar-winning actress died.