In general, if you're wondering what causes high suicide rates, it's a lot more useful to look at societal motivators than race. As everywhere, there's a strong correlation between depression and suicide, and it's not hard to find the main causes. In Japan's particular case, the largest group committing suicide are the elderly, who have devoted their lives to their company and feel they have nothing left when they retire. The second-largest group is the unemployed, particularly those who have fallen into debt traps that very often ensnare family and friends as guarantors, with life insurance providing an "easy" way out. And the final group is students, who commit suicide to escape bullying or the immense pressure of their final exams.