article_snippet.sent: But the documentary concludes there were no signs that drink or drugs were exacerbating Williams depression when Williams died.
article_snippet.sent: Blood samples taken after his death showed Williams had not taken cocaine or alcohol in the last 24 hours of Williams life.
article_snippet.sent: There was also no sign of damage to Williams liver from previous drinking binges.
highlights_snippet.sent: Post-mortem examination showed the actor had undiagnosed dementia .
  