Suicide (from Latin sui caedere, to kill oneself) is the act of willfully ending one's own life. It can also refer to the individual who has committed or attempted the act. Suicide is not simply an illness nor a condition. Rather, it is a complex set of behaviors that exists on a continuum, from ideas to actions.Suicide occurs for any number of reasons, often relating to depression, substance abuse, shame, avoiding pain, financial difficulties, or other undesirable situations.Views on suicide have been influenced by cultural views on existential themes such as religion, honor, and the meaning of life. Most Western and Asian religions-the Abrahamic religions, Buddhism, Hinduism-consider suicide a dishonorable act; in the West it was regarded as a serious crime and offense against God due to religious belief in the sanctity of life. Japanese views on honor and religion led to seppuku being respected as a means to atone for mistakes or failure during the samurai era; Japanese suicides rates remain some of the developed world's highest. In the twentieth century suicide in the form of self-immolation has been used as a form of protest, and in the form of kamikaze and suicide attacks as a military or terrorist tactic.The way societies view suicide varies widely according to culture and religion. For example, many Western cultures, as well as mainstream Judaism, Islam, and Christianity tend to view killing oneself as quite negative. One myth about suicide that may be the result of this view is considering suicide to always be the result of a mental illness. Some societies also treat a suicide attempt as if it were a crime. However, suicides are sometimes seen as understandable or even honorable in certain circumstances, such as in protest to persecution (for example, hunger strike), as part of battle or resistance (for example, suicide pilots of World War II; suicide bombers) or as a way of preserving the honor of a dishonored person (for example, killing oneself to preserve the honor or safety of family members).Nearly 1 million people worldwide commit suicide each year, with anywhere from 10 million to 20 million suicide attempts annually. About 30,000 people reportedly kill themselves each year in the United States. The true number of suicides is likely higher because some deaths that were thought to be an accident, like a single-car accident, overdose, or shooting, are not recognized as being a suicide. Suicide is the eighth leading cause of death in males and the 16th leading cause of death in females. The higher frequency of completed suicides in males versus females is consistent across the life span. In the United States, boys 10-14 years of age commit suicide twice as often as their female peers. Teenage boys 15-19 years of age complete suicide five times as often as girls their age, and men 20-24 years of age commit suicide 10 times as often as women their age. Gay, lesbian, and other sexual minority youth are more at risk for thinking about and attempting suicide than heterosexual teens.Suicide is the third leading cause of death for people 10-24 years of age. Teen suicide statistics for youths 15-19 years of age indicate that from 1950-1990, the frequency of suicides increased by 300% and from 1990-2003, that rate decreased by 35%. However, from 2000-2006, the rate of suicide has gradually increased, both in the 10-24 years and the 25-64 years old age groups. While the rate of murder-suicide remains low at 0.0001%, the devastation it creates makes it a concerning public-health issue.The rate of suicide can vary with the time of year, as wells as with the time of day. For example, the number of suicides by train tend to peak soon after sunset and about 10 hours earlier each day. Although professionals like police officers and dentists are thought to be more vulnerable to suicide than others, important flaws have been found in the research upon which those claims are based.