Two-thirds of people attending emergency departments because of self-harm are under 35 years of age. They are high users of health and social care services. Self-harm has a strong association with suicide: 7 patients per 1000 (about 1%) die by suicide in the year after attending emergency departments with a non-fatal episode (60 times the general population risk), rising to as many as 30 patients per 1000 over the next 15 years. In a recent longitudinal study conducted at the University of Toronto, "all-cause mortality following a first episode of self-poisoning was 1107 per 100,000 person-years… [with] nearly half of all deaths being suicides, accidents or undetermined intent." About a quarter of suicides are preceded by a hospital visit due to non-fatal self-harm in the previous year. It is the major identifiable risk factor for suicide. Mortality from non-suicidal causes is also high, with significantly more than the expected numbers of deaths from natural causes and from accidents. Whilst four of ten people who present with self-harm are men, they form nearly two thirds of suicides after an episode and are far more likely than women to die of premature death from other causes. The premature deaths are greatly over-represented among young people and the life years lost to the community are many.