Suicide is a major public health concern affecting both the society and family life. There are data indicating that higher level lithium intake with drinking water is associated with lower suicide rate. This pilot study examined the relationship between lithium levels in drinking water and suicide rates in Lithuania. Twenty-two samples from public drinking water systems were taken in 9 cities of Lithuania. The lithium concentration in these samples was determined by inductively coupled plasma mass spectrometry (ICP-MS). The suicide data were obtained from the Lithuania Database of Health Indicators, and comprised all registered suicides across all ages and gender within the 5-year period from 2009 to 2013. The study demonstrated an inverse correlation between levels of lithium (log natural transformed), number of women for 1000 men and standardized mortality rate for suicide among total study population. After adjusting for confounder (the number of women for 1000 men), the lithium level remained statistically significant in men, but not in women. Our study suggested that higher levels of lithium in public drinking water are associated with lower suicide rates in men. It might have a protective effect on the risk of suicide in men.

The aim of this study was to establish prevalence, recognition, and risk factors for mental disorders and suicidal ideation in PC patients. A cross-sectional survey based on standard mental health evaluation. Lithuanian primary care. 998 patients from four urban PC clinics. Current mental disorders and suicidal ideation assessed using the Mini International Neuropsychiatric Interview (MINI). According to the MINI, 27% of patients were diagnosed with at least one current mental disorder. The most common mental disorders were generalized anxiety disorder (18%) and major depressive episode (MDE) (15%), followed by social phobia (3%), panic disorder (3%), and post-traumatic stress disorder (2%). Some 6% of patients reported suicidal ideation. About 70% of patients with current mental disorder had no documented psychiatric diagnosis and about 60% received no psychiatric treatment. Greater adjusted odds for current MDE were associated with being widowed or divorced patients (odds ratio, OR = 1.8, 95% CI 1.2-2.8) and with lower education (OR = 1.6, 95% CI 1.1-2.3), while greater adjusted odds for any current anxiety disorder were found for women (OR = 1.9, 95% CI 1.3-2.8) and for patients with documented insomnia (OR = 2.2, 95% CI 1.2-4.2). Suicidal ideation was independently associated with use of antidepressants (OR = 5.4, 95% CI 1.7-16.9), with current MDE (OR = 2.9, 95% CI 1.5-5.8), and with excessive alcohol consumption (OR = 2.0, 95% CI 1.1-3.8). Depression, anxiety disorders, and suicidal ideation are prevalent but poorly recognized among PC patients. The presence of current MDE is independently associated with marital status and with lower education, while current anxiety disorder is associated with female gender and insomnia. Suicidal ideation is associated with current MDE, and with antidepressants and alcohol use.

Objective: This study aims at identifying associations between cognitive function and suicidal ideation in the sample of patients with anxiety and mood disorders (AMD). Methods: In sum, 186 (age = 39 ± 12.3 years; 142 [76.3%] females) patients with AMD were enrolled in the study. Assessment included evaluation of socio-demographic information, medication use, anxiety and depression symptoms. Cognitive tests included measures of psychomotor performance and incidental learning using the Digit Symbol Test. Trail Making Tests respectively measured perceptual speed, task-switching and executive control. Additionally, 21 patients completed tests from the Cambridge Automated Neuropsychological Test Battery measuring set shifting (Interdimensional/extradimensional set-shift), executive planning (Stockings of Cambridge), and decision making (Cambridge Gamble Task [CGT]). Results: Almost half (45.0%, n = 86) of the study sample patients had experienced suicidal ideations. In multivariable regression analysis, suicidal ideation was associated with a greater overall proportion of bet and risk taking on the CGT task (β = 0.726, p = .010 and β = 0.634, p = .019), when controlling for socio-demographic characteristics, medication use, anxiety and depression symptoms. Conclusions: Outpatients with AMD and suicidal ideation could be distinguished by the presence of cognitive deficits in the executive function domain, particularly in impulse-control and risk taking.

Objective: To investigate an association of lithium levels in the drinking water with suicide mortality rates in Lithuania. Methods: Samples from public drinking water systems were taken in all districts of Lithuania. Lithium levels were determined using the ion chromatography method. For the statistical calculations, lithium levels were averaged per district municipality and plotted against suicide standardized mortality rates (SMR) per 100,000 populations, within the 5-year period from 2012 to 2016. Results: We found that lithium concentrations in drinking water were significantly negatively associated with total suicide rates in a nonlinear way. Conclusion: Lithium intake with drinking water may affect suicide rates in some geographical areas.

Conducting a psychosocial autopsy after a suicide is a well-known method in the world for a deeper understanding of suicide, but it still raises a lot of debates over how this method could be applied better to avoid questionable reliability of the research. This study represents methodological insights from a psychosocial autopsy study of adult suicide. 145 people, who lost a close relative or friend due to a suicide, participated in the study. The results revealed that it is particularly important to complete a pilot study and a test of the protocol in a specific sample. Insights to organize face to face meetings due to the sensitivity of the experience, the ability to observe and respond to the risk of suicide of respondents, and to require researchers with practical experience in suicide prevention and psychological assistance is emphasized. This study is an attempt to give methodological insights for future research of suicide and facilitate significant progress in our understanding of suicide.