First - degree criminals are 4 to 5 times more likely to attempt or complete a suicide . Still , says Smith , ` ` ' is not destiny '' Influential factors are a combination of genetics and personality . Ernest Smith committed suicide , and so did several of his relatives .
First-degree relatives are 4 to 6 times more likely to attempt or complete a suicide . Still , says expert , `` genetics is not destiny '' Influential factors are a combination of genetics and environment . Ernest Hemingway committed suicide , and so did several of his relatives .