The phenomenon of suicide can be traced, without much difficulty throughout the entire history of humankind, up to the present day. However, despite the increasing knowledge and understanding, it remains a mystery shrouded in a veil of secrecy. Therefore, it is not surprising that there are so many questions regarding this personal and social phenomenon. Psychology, sociology, moral theology, and many other scientific disciplines, each in their own way, are trying to understand, and present the most common factors, and propose their solutions for the permanent elimination or at least a significant reduction of suicidality. Moral theology draws its teaching from the Holy Scriptures, the Christian tradition, and the teaching of the Church. To understand the Church's current positions on suicide and its moral evaluation, it is necessary to go back in time and refer to the texts of the Holy Scriptures and Christian tradition. That is why this paper briefly outlines the development of the Christian doctrine regarding the phenomenon of suicide and more directly interprets the current position of the Catholic Church on suicide and euthanasia as one of the disturbing ways of human self-destructive behavior. Although it is not decisive for the moral evaluation of the phenomenon, the statistics show a rough picture of the current state of society that generates such behavior. Therefore, this paper, in addition to numerous already existing statistics on suicide, brings the original statistics from the area of Cetina region (inland Dalmatia) using data from the Funeral register of the Sinj Parish Office and suicide data from the Split-Dalmatia County Police. The aim of this work is a better understanding of the complex issues related to the phenomenon of suicide.