UK: Suicide rates in young men at lowest levels since 1970s

Feb 15, 2008

The reasons for the steady decline in suicides among young people in the UK are explored in two studies by researchers from the University of Bristol published on bmj.com today. The studies were carried out in collaboration with the Office for National Statistics and IMS Health.

The first shows that fewer young men in England and Wales are dying by suicide than at any time in the last 30 years. Contributory factors probably include less unemployment and laws that have reduced the risks from car exhaust fumes.

The researchers, from Bristol University’s Department of Social Medicine, carried out a time trend analysis among men and women aged 15-24 and 25-34 between 1968 and 2005 using data on suicide mortality, population statistics and surveys, prescribing information and data on unemployment and divorce.

They found that for 15-24 year-old men, the overall suicide rate dropped from 16.6 per 100,000 people in 1990 to 8.5 per 100,000 in 2005. Amongst 25-34 year old men, overall suicide rates declined from 22.2 per 100,000 in 1990 to 15.7 per 100,000 in 2005.

Various factors have played a part in this reduction to the suicide rate.

Car exhaust emission legislation in 1993 has contributed to falling suicide rates, say the authors, because it has led to a marked reduction in car exhaust gas poisoning due to the increased number of cars with catalytic converters.

This, however, is one of several factors at play including the impact of the suicide prevention policy initiatives in England and Wales.

For women, suicide rates in the 21st century are at their lowest levels since 1968, but the proportion of women aged 15-34 committing suicide by hanging has increased massively from 5.7 per cent of all suicides to 47.3 per cent by 2005.

Professor David Gunnell, co-author of the paper, said: “Favourable changes in several different factors – levels of employment, substance misuse and antidepressant prescribing as well as policy focus on suicide and vehicle exhaust gas legislation – may have contributed to the recent reductions.”

The second study finds no effect on suicide of the recent restrictions on antidepressant prescribing to children and adolescents in the UK.

They analysed three separate sets of data between 1993 and 2006 (SSRI antidepressant prescriptions to 12-19 year olds in the UK, annual deaths from suicide in 12-17 year olds in England and Wales, and hospital admissions for self-harm in 12-17 year olds in England).

But they found no evidence of a temporal association between trends in antidepressant prescribing and deaths from suicide or hospital admissions for self harm despite a halving in levels of prescribing following regulatory action in 2003.

Dr Richard Martin, co-author of the paper, said: “These findings are important because they suggest that reduced access to antidepressants in young people appears not to have had an adverse impact on suicide deaths.”

An accompanying editorial suggests that sustained use of antidepressants is probably too rare to have much overall effect on risk of suicide in people living with depression.

Source: University of Bristol

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