More rarely, it may be caused by ingesting methanol or overdosing on aspirin. She had committed suicide by overdosing on alcohol and barbiturates. Intentional overdosing (self-poisoning, with suicidal intent) is frequently implicated in paracetamol toxicity. This can lead to significant overdosing and underdosing (and increased risk of disease recurrence). Cooper committed suicide by overdosing on barbiturates in 1960. In a 2006 review, paracetamol was the most frequently ingested compound in intentional overdosing. She attempts suicide by overdosing on medication. It was also alleged that she tried to commit suicide by overdosing on aspirin. She subsequently attempts suicide by overdosing on pills. Onassis became addicted and was reportedly hospitalized for overdosing on sleeping pills in the 1970s. He died in 1979 after overdosing on heroin. That night, Kelly commits suicide by overdosing on prescription medication. She had apparently committed suicide by overdosing on Tuinal tablets. Jamison once attempted suicide by overdosing on lithium during a severe depressive episode. He attempts suicide by overdosing on phenobarbital but doctors save his life.