Global Suicide Rates Research Articles

Breaking the Silence: A Comprehensive Review of Suicide

Suicide is a complex and multifaceted phenomenon, representing a significant global public health issue worldwide. This review explores the various aspects of suicide, including its definition, prevalence, and contributing factors. Suicide is the fourth leading cause of death among 15-29-year-olds globally, with the highest rates observed in low- and middle-income countries. Suicidal tendencies manifest in diverse forms, ranging from ideation and gestures to chronic suicidality and murder-suicide, each reflecting unique psychological, social, and biological influences. Psychological factors, particularly mental health disorders, play a significant role in suicide risk, while social isolation, economic hardship, and cultural dynamics further exacerbate vulnerability. Biological factors, such as genetic predisposition and neurobiological alterations, also contribute to suicide risk. The review highlights the importance of prevention strategies, including improving access to mental health care, crisis intervention, restricting access to means of suicide, and public awareness campaigns. The societal impact of suicide is profound affecting families, communities, and economies. Comprehensive, multi-faceted approaches are essential to reduce the global suicide rate and mitigate its impact.

Reviewing global suicide rates via X, Y, and Z perspectives

Global suicide rates owing to disaster impacts have been confusing because of varied and unclear results. This study aimed to investigate how suicides have occurred worldwide during disasters. The methodology used included a systematic literature review and comparative analysis. The disaster exacerbation (X, bad human nature, or suicide rate rise) perspective was compared with the disaster resilience (Y, good human nature, or suicide rate fall) perspective to extract disaster ecology (Z, neutral human nature, or suicide rate fluctuation) perspective from international leaders, government officials, researchers, and disaster victims. A major theme was that the four stakeholders would adopt the Z perspective based on the fusion of X and Y perspectives (leading to X+Y=Z), while embracing heterogeneous research, proactive and long-term strategies, education, and so on. This study relied heavily on the large-scale dynamics of suicide rates than previous studies.

Advancing Global Health Through Primary Care Physician Education on Suicide Prevention.

The rising global suicide rate presents a major public health concern, resulting in the loss of over 700,000 lives annually. Discrepancies in the impact of suicide among diverse populations underscore the necessity for targeted prevention strategies. Primary care providers (PCPs) play a crucial role in identifying and managing suicide risk, particularly in underserved areas with limited access to mental health care. Educating PCPs about evidence-based interventions and suicide prevention strategies has demonstrated effectiveness in reducing suicide rates. Landmark initiatives in Australia, Sweden, and Hungary have successfully lowered suicide rates by implementing educational programs for PCPs focused on suicide prevention. Denmark, previously afflicted by some of the highest rates globally in the 1980s, has significantly reduced its figures and now ranks among countries with the lowest rates in high-income nations. Collaborative programs involving PCPs and health workers in low-resource regions have also shown promising outcomes in suicide prevention efforts. Enhancing the expertise of PCPs in suicide prevention can fortify healthcare systems, prioritize mental health, and ultimately save lives, contributing to global health endeavors aimed at addressing the pervasive issue of suicide.

Non-fatal suicide behaviours across phases in the COVID-19 pandemic: a population-based study in a Catalan cohort

The COVID-19 pandemic has been extensively discussed in the context of its effect on mental health. Although global suicide rates have remained stable during the pandemic, the specific effect on non-fatal suicide behaviours during and after the pandemic remains underexplored. This study aims to investigate patterns of non-fatal suicide behaviours before, during, and after the pandemic. In this cohort study, we used data from all hospitals in Catalonia, Spain, collected through the Catalan Suicide Risk Code, which is a specifically designed suicide attempt surveillance protocol, involving a face-to-face, in-depth psychiatric evaluation, after a Catalan resident presents any suicide risk behaviour in any public health-care setting. This evaluation centralises data from suicide registries across the territory. We included non-fatal suicide behaviours, meaning suicidal ideation or attempts that did not result in death, and excluded self-harm behaviours not judged to be linked with suicidal ideation. We considered three periods: the pre-confinement period (Jan 1, 2018, to the enforcement of the lockdown in Spain on March 14, 2020); the confinement period (March 14, 2020, to the end of lockdown on June 21, 2020); and the post-confinement period (June 21, 2020, to Dec 31, 2022). We used Bayesian structural time series models to assess the effect of pandemic phases on non-fatal suicide behaviours, and we ran stratified analyses by sex and age to identify distinct patterns among demographic cohorts. We obtained 26 482 records from Jan 1, 2018, to Dec 31, 2022. The mean age was 37·94 years (SD 18·07), and the sample included 17 584 (66·4%) women and 8898 (33·6%) men. Data on ethnicity were not collected. Temporal trends showed a mild increase in non-fatal suicide behaviours from Jan 1, 2018, to March 13, 2020; a reduction during the confinement period; and a subsequent rise after confinement. Bayesian models suggested a significant causal effect of lockdown easing, resulting in a 50·77% increase in non-fatal suicide behaviours (95% credible interval [CrI] 26·62-76·58; p<0·0001). Stratified analyses indicated that the easing of lockdown resulted in a significant increase in non-fatal suicide behaviours among women (25·92%; 6·71-44·72; p=0·011) and among individuals aged 18 years and younger (72·75%; 38·81-108·11; p<0·0001). This study provides a comprehensive examination of non-fatal suicide behaviours in Catalonia, Spain, emphasising the dynamics of different COVID-19 pandemic phases. The initial reduction during strict lockdown aligns with Joiner's Interpersonal Theory of Suicide, whereas the post-confinement rise reflects complex factors, including social isolation and economic challenges. Sex-specific and age-specific analyses underscore distinct vulnerabilities, emphasising the need for targeted preventive strategies. Centro de Investigación Biomédica en Red de Salud Mental annual budget of G21, Agència de Gestió d'Ajuts Universitaris i de Recerca of the Generalitat de Catalunya. For the Catalan and Spanish translations of the abstract see Supplementary Materials section.

Long Story Short, I Survived: An Exploration of the Meaning-making Stories of Suicide Attempt Survivors

This study aimed to explore how suicide attempt survivors construe meaning in their experiences. Using the case study approach by Robert Yin (2009), qualitative research was employed. Purposive and snowballing techniques were used to gather data from primary interviews, key informants, and psychological assessment tools. The analytic techniques were thematic and cross-case syntheses. The findings revealed the participants' earlier experiences such as relationship breakdowns and prior nonsuicidal self-injury behaviors were risk indicators of suicide attempt. However unique cases were due to same-sex attraction and gender identity issues. Protective factors included social support, effective control over situations, and reason for living. The study identified five themes of meaning-making: strengthening social connections, positive religious coping: a belief in the presence of a Higher Power (God), developing new perspective to life, value positioning on gratitude and grit, and optimism. The study highlights the importance of holistic approach that recognizes the physical, psychological, social, and spiritual aspects of suicide. This study has implications for families, social communities, practitioners and future researchers to investigate and broaden the breadth of these relationships for theory and practice. In conclusion, the urgency of this research stemmed from the need to address the rising global suicide rate and enhance suicide prevention efforts. By amplifying the perspectives of suicide attempt survivors and exploring the multifaceted nature of suicide, this research can be ultimately contributing to the preservation of lives and the reduction of the worldwide burden associated with suicide.

Suicide in Later Life in Uruguay: A Suicide Note Analysis.

Suicide is a significant public health challenge worldwide, with inconsistent behavioral patterns. This study examined the psychological processes underlying 191 suicide notes left by older adults in Uruguay, a country doubling global and regional suicide rates, with the highest prevalence among those aged 60+. Uruguay highlights in the region as a high-income country. Through content analysis with an inter-judge strategy, the notes revealed that loneliness, loss of interest, and loss of meaning for life, were prevalent. Financial hardship was not a primary reason for suicide. Social connectedness was highlighted as a factor for reducing suicide risk in older adults, particularly those with ill health and physical impairment. The study sheds light on the need to expand social services aimed at reducing loneliness and the need to combat ageism and social prejudice towards suicide in Uruguay, providing valuable insights into suicide prevention strategies for older adults in diverse social settings.

Meeting the UN Sustainable Development Goals for mental health: why greater prioritization and adequately tracking progress are critical.

Meeting the UN Sustainable Development Goals for mental health: why greater prioritization and adequately tracking progress are critical.

Appropriate Macronutrients or Mineral Elements Are Beneficial to Improve Depression and Reduce the Risk of Depression.

Depression is a common mental disorder that seriously affects the quality of life and leads to an increasing global suicide rate. Macro, micro, and trace elements are the main components that maintain normal physiological functions of the brain. Depression is manifested in abnormal brain functions, which are considered to be tightly related to the imbalance of elements. Elements associated with depression include glucose, fatty acids, amino acids, and mineral elements such as lithium, zinc, magnesium, copper, iron, and selenium. To explore the relationship between these elements and depression, the main literature in the last decade was mainly searched and summarized on PubMed, Google Scholar, Scopus, Web of Science, and other electronic databases with the keywords "depression, sugar, fat, protein, lithium, zinc, magnesium, copper, iron, and selenium". These elements aggravate or alleviate depression by regulating a series of physiological processes, including the transmission of neural signals, inflammation, oxidative stress, neurogenesis, and synaptic plasticity, which thus affect the expression or activity of physiological components such as neurotransmitters, neurotrophic factors, receptors, cytokines, and ion-binding proteins in the body. For example, excessive fat intake can lead to depression, with possible mechanisms including inflammation, increased oxidative stress, reduced synaptic plasticity, and decreased expression of 5-Hydroxytryptamine (5-HT), Brain Derived Neurotrophic Factor (BDNF), Postsynaptic density protein 95(PSD-95), etc. Supplementing mineral elements, such as selenium, zinc, magnesium, or lithium as a psychotropic medication is mostly used as an auxiliary method to improve depression with other antidepressants. In general, appropriate nutritional elements are essential to treat depression and prevent the risk of depression.

Validating the interpersonal theory of suicide among older adultspre- and peri-COVID-19 pandemic

Objectives Global suicide rates are highest among older adults, and especially older men, yet proximal predictors of suicidal ideation in older age remain poorly understood. This study tested the Interpersonal Theory of Suicide in older men and women by investigating whether perceived burdensomeness and thwarted belongingness and/or their interaction are proximal predictors of suicidal ideation before versus during the global COVID-19 pandemic. Methods The sample (N = 208) included healthy community-dwelling older Australian persons surveyed face-to-face pre-pandemic (n = 102), or online peri-pandemic (n = 106). Depression, social interaction, social satisfaction, thwarted belongingness, and perceived burdensomeness were assessed as predictors of suicidal ideation. Results Perceived burdensomeness was a more proximal predictor of suicidal ideation among older adults than depression or thwarted belongingness. Suicidal ideation and perceived burdensomeness were higher in men than women, but sex did not moderate the influence of perceived burdensomeness, thwarted belongingness or social satisfaction on suicidal desire. The interaction between perceived burdensomeness and thwarted belongingness predicted more additional variance in suicidal ideation in the older persons surveyed during the COVID-19 pandemic relative to those surveyed before the pandemic. Conclusion Suicidal ideation among older persons peri-pandemic is discussed, and recommendations are made for age-specific suicide prevention strategies.

Decriminalizing suicide attempt in the 21st century: an examination of suicide rates in countries that penalize suicide, a critical review

BackgroundDecriminalizing suicide may decrease overall suicide rates because then individuals who are at risk of suicide would be more willing to seek help from the community and from mental health professionals, therefore enabling early interventions for preventing suicidality. We aimed to examine the suicide trends over the last 20 years in 20 countries that still criminalize attempted suicide, and to compare the suicide rates of these 20 countries against the global average suicide rate and to a comparison sample of 20 countries that do not criminalize suicide, matched according to region and majority religion.MethodsAge-standardized suicide rates were extracted from the WHO Global Health Estimates, available for the period 2000-2019. Population data were extracted from the World Bank. We analyzed only countries which criminalize attempted suicide under its criminal justice system. Countries were further categorized according to their membership in the Commonwealth of Nations and countries in Africa. Countries from the same region and with the same majority religion were chosen as a matching group. Joinpoint analysis was used to compare the trends of the two groups with the global average.ResultsBased on the 2019 WHO Global Health Estimates data, there is a large range in the suicide rates of the countries that criminalize attempted suicide, from 2.5 (Brunei) to 40.9 (Guyana) per 100,000 population. The mean suicide rate was 8.3 (Standard Deviation = 10.6). Out of the 20 countries, seven have suicide rates higher than the global average, covering a total population of about 387.3 million. Of these seven countries, five are in the African region. The other thirteen countries have suicide rates between 2.5 to 8.2. Mean scores of the countries which criminalized attempted suicide was lower than the global average and 20 comparison countries over the 20 years, but average annual percentage in the decrease of suicide was greater for countries in which attempted suicide was not criminalized.ConclusionsBased on our review, there was no substantial evidence here to indicate that countries which criminalized attempted suicide had consistently lower suicide rates compared to the global average. There is a need to acknowledge that the currently available evidence is inadequate to definitively claim that criminalizing suicide is beneficial or harmful for the reduction of suicide rate for the entire populations. Future studies should continue to evaluate the unique effects of decriminalizing attempted suicide while controlling for other key associated factors.

A Scoping Review of Gender Differences in Suicide in India.

IntroductionMuch of the published literature on suicide comes from high income countries. In countries such as India, female suicide rates exceed the global suicide rate and suicide rates found in their male counterparts. Results from previous studies indicate that factors related to suicide among men and women in India are different from those seen in high-income countries. To date, no reviews have considered the relationship between gender and suicide in India. Therefore, the aim of this scoping review is to provide a comprehensive understanding of existing literature reporting gender differences in suicide rates, methods, risk factors and antecedent factors in India by reviewing published studies.MethodA scoping review was conducted to map the existing literature on gender differences in suicide in India. To identify peer-reviewed publications, online databases PsycINFO and Embase were searched. The search terms were [suicid* AND India*]. The searches took place in November 2020 and May 2021, with no language restrictions. Articles published from 2014 onwards from India were included. Reference lists of selected studies were searched for studies that could meet the inclusion criteria.ResultsThis review identified 17 studies that met the inclusion criteria. The ratio between women and men who die by suicide in India is much lower than in high-income countries. Hanging was found to be a more commonly used method of suicide among both men and women, in comparison to high-income countries where hanging is more common among men. This review also identified several gaps in the literature. There were few studies that examined suicide among transgender Indians. There was limited literature on gender differences in risk and protective factors for suicide. Limitations such as the omission of a lack of gender-based analyses in several studies and under-reporting of suicide rates were identified.ConclusionUnderstanding suicide within the context of individual countries is essential in designing culture-appropriate suicide prevention strategies. This review identified an urgent need to establish and evaluate suicide surveillance systems in India. Furthermore, additional research is warranted to understand suicide among individuals who identify outside the gender binary, and gender-specific risk and protective factors.

Physician suicide demographics and the COVID-19 pandemic.

Objective:To identify suicide rates and how they relate to demographic factors (sex, race and ethnicity, age, location) among physicians compared to the general population when aggravated by the coronavirus disease 2019 (COVID-19) pandemic.Methods:We searched U.S. databases to report global suicide rates and proportionate mortality ratios (PMRs) among U.S. physicians (and non-physicians in health occupations) using National Occupational Mortality Surveillance (NOMS) data and using Wide-ranging Online Data for Epidemiologic Research (WONDER) in the general population. We also reviewed the effects of age, suicide methods and locations, COVID-19 considerations, and potential solutions to current challenges.Results:Between NOMS1 (1985-1998) and NOMS2 (1999-2013), the PMRs for suicide increased in White male physicians (1.77 to 2.03) and Black male physicians (2.50 to 4.24) but decreased in White female physicians (2.66 to 2.42).Conclusions:The interaction of non-modifiable risk factors, such as sex, race and ethnicity, age, education level/healthcare career, and location, require further investigation. Addressing systemic and organizational problems and personal resilience training are highly recommended, particularly during the additional strain from the COVID-19 pandemic.

The Age-Period-Cohort trends of suicide in Hong Kong and Taiwan, 1979-2018

BackgroundThe global age-standardized suicide rate fell by 32.7% between 1990 and 2016. The decrease was largely due to suicide rate reductions in China and India. High-income Asian regions did not see such reductions. The aim of the current study was to explore recent suicide rate trends in Hong Kong and Taiwan to decompose which factors – age, period or cohort – explain suicide rate changes in these two regions. MethodsOfficial mortality data for 1979-2018 in Hong Kong and Taiwan were collected. We utilized Web Tool from the NIH (National Institute of Health, USA) to analyze the Age-Period-Cohort (APC) effects. ResultsWe found marked age-effect that suicide rates increased with age in both genders in both places. Period effect related to the dissemination of charcoal burning suicide was found during 1999-2003 in Hong Kong and 2004-2008 in Taiwan. Increasing suicide rates in the middle- and young-age male cohorts were found in both regions. No increase in suicide risks in young female cohorts was observed. Older cohorts in Hong Kong and older female cohorts in Taiwan also had high suicide rates, but older male cohorts in Taiwan had low rate. LimitationsThe interpretations and observations at the population level might not hold at the individual level. ConclusionsThe high suicide risk in middle- and young male cohorts in both regions contribute to the persistent high suicide rates in these two regions. Special attention should be turn to the factors underlying such increasing trends.

Analysis of psycho-sociodemographic features in referred male psychiatric patients with suicidal ideation

Abstract Suicide is defined by the World Health Organization as an act in which an individual ends his or her own life. Suicidal behavior is a major public health problem worldwide. According to the World Health Organization, the global suicide rate is 10,5/100.000 – 13,5/100.000 in case of men and 7,7/100 000 in case of women and is the 2nd most common cause of violent death. Suicide is a multifactorial phenomenon that can be approached from different perspectives. In Romania, this rate is similar to the global rate: in 2016, the estimated suicide rate was 10.4/100,000, well below the European average. Suicide rates vary by region, age group, gender, ethnicity, and registration of mortality statistics. The aim of the present study is to investigate the psycho-socio-demographic indicators of a cohort of patients with suicidal thoughts emergency referred to a particular psychiatric ward in one year. In our research, we performed a case-control, analytical, randomized, observational study at the Clinical Hospital of Neurology and Psychiatry Brasov among adult psychiatric patients admitted during 2014. The following data on patients were processed: demographic data (age, gender, place of residence), psychosocial data (social background, marital status, education), chronic somatic comorbidities, family history of psychiatric illness, pre-existing psychiatric illnesses, previous suicide attempts and their characteristics. The risk of suicide was assessed by the Modified Scale for Suicide Ideation - Miller et al. Questionnaire and distinguished 3 categories. In our sample of 77 cases we identified 14 patients with low suicide risk, 17 with moderate risk and 46 with high suicide risk. The focus of our study was on suicidal behavior. Suicide attempt, as a complex clinical problem with a waste complexity of ethiology, has high demands on psychiatric care. Being familiar with the different psycho-socio-demographic profiles by gender is proved to be a useful tool in both “screening” and in subsequent case management. These principles can facilitate decision-making, can increase adherence to treatment, and reduce the risk of repetitive attempts.

The Persistence of Suicides in G20 Countries between 1990 and 2017: an SPSM Approach to Three Generations of Unit Root Tests

Suicides represent an encompassing measure of psychological wellbeing, emotional stability as well as life satisfaction, and they have been recently identified by the World Health Organization (WHO) as a major global health concern. The G20 countries represent the powerhouse of global economic governance and hence possess the ability to influence the direction of global suicide rates. In applying the sequential panel selection method (SPSM) to three generations of unit root testing procedures, the study investigates the integration properties of suicides in G20 countries between 1990–2017. The results obtained from all three generations of tests provide rigid evidence of persistence within the suicides for most member states of the G20 countries, hence supporting the current strategic agenda pushed by the WHO in reducing suicides to a target rate of 10 percent. In addition, we further propose that such strategies should emanate from within G20 countries and spread globally thereafter.

FOUR STEP SELF – DEVELOPMENT PROGRAMME FOR TEENAGERS IN SOLVING THEIR PROBLEM

Suicide in teens is ever on the increase. The global suicide rate stands at 14.5 deaths per 100,000, with suicide the fourth cause of death in the 15 to 19 age group. Factors like family conflicts, over expectation of parents, child abuse, academic failures, teenage infatuations and mental illness lead to Stress and Suicidal Ideations in teens resulting in lack of Self Esteem, deficiency in communication, low academic performance and difficulty in problem solving. In this study, preliminary assessment to determine the severity of the problem was done using the PLISSIT screening. PLISSIT Model (Annon-1976) was used for screening. PLISSIT stands for Permission (P), Limited Instruction (LI), Specific Suggestion (SS), and Intensive Therapy (IT). It is concluded from the findings that the package of interventions comprising of Transactional Analysis and Behavior therapy is useful in the effective management of Stress among teenagers. Decision to change was made using TA model. BT facilitated the external change. The package of TA and BT was instrumental in stabilizing the change.

Influence of the global crisis of 2008 and the brazilian political oscillations of 2014 on suicide rates: An analysis of the period from 2002 to 2017.

Global suicide rates have increased in recent decades becoming a serious social and public health problem. In Brazil, rates have been increasing annually. We aimed to analyze the correlation between suicide mortality rates and global economic and political crisis periods of 2008 and 2014 in Brazil. The analysis of suicide mortality in Brazil was done using a time-series segmented linear regression model that estimated the trend of rates over time. To obtain the model, changes in the trend of both abrupt and gradual suicide rates were investigated. The results indicate statistically significant changes showing an upward trend of suicide rates during the world economic crisis (2008-2013) and during the economic and political crisis in Brazil (2014-2017) compared to previous periods, especially at the extremes of schooling (3 < years and > 8 years). Among white and parda, there were significant trend rates increases in both periods and in different regions. In the Northeast and South regions, we observed a significant increase in the trend rate for males after the Brazilian economic and political crisis (2014 to 2017). We can conclude that the national suicide rates were influenced by the economic and political instability that our country has been going through since 2008, affecting each region differently. Further studies are needed to explore the reasons for interregional differences and the relation of suicide with unemployment rates and possible economic predictors.

Suicide in DSM-5: Current Evidence for the Proposed Suicide Behavior Disorder and Other Possible Improvements.

Suicide continues to be one of the greatest challenges faced by mental health clinicians and researchers, an issue made worse by increasing trends in the global suicide rate. Suicide behavior disorder (SBD) was introduced in DSM-5 as a disorder for further consideration and potential acceptance into the diagnostic system. There are numerous positive developments that would arise from the addition of a suicide-related diagnosis. Utilizing the 2009 guidelines established by Kendler and colleagues, the present review examines the evidence for SBD's validity and discusses the diagnosis' potential clinical benefits and limitations. Altogether, growing evidence indicates that SBD has preliminary validity and benefit. SBD presents with several significant limitations, however, and possible alternative additions to future DSMs are highlighted.

Depression as a Mediator between Negative Interpersonal Relationship and Suicidal Ideation among Korean Adolescents

South Korea has one of the highest global suicide rates. In spite of the notorious ranking of suicide rate across the world, analyses of the cause of suicide have been rare in South Korea. Using a Korean survey in 2010 with 399 samples aged 12 to 21, this study conducted structural equation modeling to apply Agnew’s general strain theory to suicidal ideation of adolescents. This study supported the theory’s assumption that negative interpersonal relationship increased suicidal ideation, with mediation effect of depression level. On the other hand, some findings in this study should be questionable. More specifically, negative relationship with friends decreased adolescents’ suicidal ideation. Eventually, however, it increased their suicidal ideation through swelling depression level. In sum, results of this study could help guide to explain the cause of suicidal ideation by interpersonal relationship. In particular, they showed the applicability of general strain theory in South Korea.

Evolutionary puzzle of Toxoplasma gondii with suicidal ideation and suicide attempts: An updated systematic review and meta-analysis.

The World Health Organization has reported an annual global suicide rate of 14.5 per 100,000 people. On the other hand, it is estimated that approximately one-third of theglobal population are infected with Toxoplasma gondii (T.gondii) parasite. It is widely assumed that microbial pathogens, such as T.gondii, are probably associated with affective and behavioural modulation. The present article aimed to assess the proposed role of toxoplasmosis in raising the risk of suicidal ideation (SI) and suicide attempts (SA) using the available epidemiological data. Seven major electronic databases and the Internet search engine Google were searched for all the studies published between the 1st of January 1950 and 31st of October 2019. The heterogeneity and the risk ofbias within and across studies were assessed. Following data extraction, pooled odds ratios (ORs) with 95% confidence interval (CI) across studies were calculated using the random-effects models. A total number of 9,696 articles were screened and 27 studies were regarded as eligible in our systematic review (SI with five papers and 22 papers on SA). A significant association was detected between antibodies against T.gondii with TA (ORs=1.57; 95% confidence interval [CI] 1.23-2.00, p=.000). Exploration of the association between T.gondii and SA yielded a positive effect of seropositivity for IgG antibodies but not IgM. Despite the limited number of studies, a statistical association was detected between suicidal behaviours and infection with latent T.gondii.