![]() Suicide is the act of deliberate taking one’s own life, whereas a suicide attempt is any non-fatal suicide behavior that might have been displayed with or without an intent to take one’s own life. It is important to distinguish between suicide and suicide attempt. ![]() In other countries, hydrogen sulfide and helium are used for suicide purposes (e.g., Japan). A high percentage of suicides with firearms (46% of all suicides) is recorded in the highly developed America, whereas the “epidemic” of using barbecue charcoal for suicidal purposes started in Hong Kong in 1998 and quickly spread to Taiwan and China, thus recently becoming the most popular method of suicide in that part of the world. ![]() Suicidal behavior (suicide method in particular) varies across countries. Īccording to the World Health Organization (WHO) and the Food and Agriculture Organization of the United Nations (FAO), the most common methods of suicide all over the world are pesticide poisoning in low- and middle-income countries, hanging, which accounts for 50% of suicides in highly developed countries, and jumping from a height, mainly in highly urbanized areas such as China, Hong Kong SAR, and Singapore. Consciousness disorders caused by alcohol consumption or the use of other psychoactive substances are observed in 25%–50% of all suicide victims. Suicide is a global phenomenon that results from a complex interaction between risk factors and triggers, including alcohol and drugs. Conclusion: Due to the distribution of suicide registration systems in Poland, data available in this area should be interpreted with caution. Self-poisoning suicides accounted for 2.1% of all cases of suicides. According to the data of the General Police Headquarters of Poland, the total number of suicides of all causes was 106,169. Results showed that out of 14,660 self-poisoning suicide attempts, there were 2258 cases of suicide poisoning deaths in the analyzed study period. Results: During the 21-year study period, 161,655 cases of suicide attempts were recorded in Poland, 106,169 of which resulted in suicides. Methods: A descriptive analysis was made based on the data obtained from the registers of the General Police Headquarters of Poland and the Statistics Poland for the years 1999–2020. The purpose of the present study was to analyze suicide attempts by intoxication, suicides, and substances that influenced the state of consciousness of suicide victims in Poland in the years covered by the study. Considering suicide attempts, poisoning, which involves overdosing various substances, is the most commonly used method. However, women tend to overdose on medications to commit suicide. The proximate cause of death in all cases was attributed to CO(2) intoxication, based on the scene findings, the reconstructed sequence of events, the autopsy, and results of toxicological studies.Background: The most common method of suicide in Poland is hanging, especially among men. The rapid increase in CO(2) concentration would render a victim helpless, with no time to wake and defend themselves, or others. Inhalation of pure CO(2) ensured their rapid unconsciousness due to hypercapnia and severe anoxia. It is hypothesized that the husband placed an inhalation mask over the mouths and noses of his wife and children while they were sleeping. Two synthetic inhalation face masks and tubing were also found, which tested positive for the DNA of all four deceased family members. The container was almost empty and according to the label had been sold as a CO(2)-fertilizer for aquarium plants. A 500 g single-use CO(2) cylinder was standing on the floor. The police found the wife and two sons lying in their beds and the husband in a supine position on the floor with a plastic bag over his head tied loosely around his neck with a rope. The bodies were those of a father (a 69-year-old business consultant), his wife (aged 26-years), and two sons (aged 3 and 6 years, respectively). Four bodies were discovered in an apartment in midsummer 2012 in Berlin, Germany. This report demonstrates how carbon dioxide (CO(2)) may be a potent weapon in murder-suicide, where the death scene offers virtually no clues as to the lethal modality and the autopsy findings are nonspecific.
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