Report on suicidal trends in persons aged 60 or over in Japan: the need for effective prevention measures.

In Japan, the suicide rate has remained high since 1998, and effective suicide prevention measures that can bring about an immediate decrease in suicides are needed now. Specific suicide prevention measures must be based on the results of detailed research into the trends and causative factors of suicide. In the present study, we investigated the number of suicides and the proportion of causative factors in persons aged 60 or over compared with the total number of suicides in Japan from 1999 to 2005. We also discussed the causative factors of suicide among men and women aged 60 or over in detail. During the period from 1999 to 2005, the proportion of the number of suicides in persons aged 60 or over to the total number of suicides changed from 28.9% to 31.1% among men and from 42.5% to 45.9% among women. The most common causative factor was 'health problems' among both men and women, and the second most common cause was 'economic and life problems' among men. 'Family problems' was one of the major causative factors among both men and women. Therefore, more attention needs to be paid to persons aged 60 or over with regard to these factors in particular. Professionals and organizations involved in suicide prevention must work cooperatively to prevent suicide.