According to the BBC, scientists

According to the BBC, scientists may have identified genes that lend a higher predisposition towards suicide. An old friend of mine killed herself a few years back. We’d lived together on and off for two years and been friends for four or five years. Nothing anyone did seemed to help her, and her life seemed like a kind of unending torment that she just couldn’t see the way out of. I really don’t know if it makes her death easier to accept if the cause was her genetic make-up. I doubt it would make it easier on the parents either, although perhaps they wouldn’t blame themselves so much. I don’t know.