Suicide among the indigenous people in Brazil: a hidden public health issue

Suicide among Indigenous peoples in Brazil from 2000 to 2020: a descriptive study

Background

Previous studies in Australia, Canada, and Brazil, found that suicide among ethnic minority groups is higher than in the general population. Indigenous peoples in Brazil have been reported to have a high suicide rate, with reports of suicide clusters occurring in several communities. The objective of this study was to report trends in countrywide suicide rates among Indigenous peoples in Brazil between 2000 and 2020, and to compare these with the non-Indigenous population.

Methods

This ecological study used Indigenous suicide data collected from all regions of Brazil during a 21-year period, between 2000 and 2020. We used suicide estimates from the Mortality Information System (SIM), available at the Brazilian Health Ministry website (DATASUS). Suicide mortality rates by state and region were calculated using the estimated Indigenous population from the 2010 census, and estimated population proportions for the other years. We performed a trend analysis and compared trends in suicide between the Indigenous and non-Indigenous population during the period studied.

Findings

Suicide rates among Indigenous Brazilians have reached more than two and a half times the levels for the overall Brazilian population in 2020 (17.57 suicide deaths versus 6.35 suicide deaths per 100,000 inhabitants, respectively). The Central-West region of Brazil had the highest suicide rates among Indigenous Brazilians over the study period, reaching 58.8 deaths/100,000 inhabitants in 2008. The younger age group (10-24 years old) had the highest suicide rates for all the years studied. Time-series analyses showed a trend of statistically significant increases in suicide rates in Brazil for both the Indigenous and non-Indigenous population during the study period. The North region, and specifically Amazonas state, has shown a decisive increase in suicide rates among the Indigenous populations. The suicide rate for Indigenous people in Brazil, excluding cases in Amazonas and Mato Grosso do Sul states, were similar to those for the entire Brazilian population, showing that the Indigenous peoples who are the most vulnerable to suicide reside in these locations.

Interpretation

While there were statistically significant increases in suicide rates for all Brazilians over the study period, they remained alarmingly high among Indigenous people, compared to their non-Indigenous counterparts. The high suicide rates among Indigenous people, and younger individuals in particular (aged between 10 and 24), reinforces the need for specific prevention strategies for these populations. Further studies should be concentrated on determining risk factors in distinct ethnic groups, specifically within regions experiencing an elevated risk, such as the states of Amazonas and Mato Grosso do Sul.

Funding

Research reported in this publication was supported by the National Institute of Mental Health of the National Institutes of Health under award number R01MH128911-01. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.

[Suicide and indigenous populations in Brazil: systematic reviewEl suicidio y los pueblos indígenas brasileños: revisión sistemática]

Objective

To describe the frequency, characteristics, and factors contributing to suicide in indigenous populations in Brazil.

Method

A systematic review of the literature was performed in PubMed, SciELO, PsycINFO, and LILACS. All population-based studies focusing on suicide among indigenous populations in Brazil were included.

Results

The search identified 111 articles, of which nine met the inclusion criteria. Three of these studies were performed in the Midwest and four in the North of Brazil, while two covered all Brazilian regions. The ethnic groups investigated were specified in three studies (Terena, Kadiweu, Guato, Ofaie-Xavante, Guarani, Guarani-Kaiowá, and Guarani-Nandeva). Suicide rates were highest among males, single individuals, those with 4 to 11 years of schooling, and those aged 15 to 24 years. Suicides occurred most often in the home and on weekends, mostly by hanging. The main risk factors for suicide identified in the articles were poverty, historical and cultural factors, poor wellbeing indicators, family disintegration, social vulnerability, and lack of life or future perspective.

Conclusions

All the studies indicated the need to engage communities in developing strategies, considering their cosmovision and the social, historic, and cultural view of each ethnic group to minimize risk factors and reduce suicide rates.

[Mortality from suicide in indigenous children in Brazil]

This study aimed to describe the characteristics, distribution, and mortality rates from suicide in indigenous children in Brazil compared to non-indigenous children. This descriptive study covered the years from 2010 to 2014, using national databases. The study collected deaths in individuals 10 to 14 years of age whose underlying cause was "inentional self-inflicted injury". Hanging was the most frequently used means in both indigenous and non-indigenous children, although it was more frequent in the former. Among indigenous children, suicides in hospitals or other healthcare establishments were less common than in non-indigenous. Approximately three-fourths of suicides in indigenous children occurred in just 17 municipalities. The mortality rate from suicide among indigenous children was 11.0/100,000 (8.4-14.3), or 18.5 times higher (10.9-31.6) than in non-indigenous, which was 0.6/100,000 (0.5-0.6), with no differences between boys and girls. This study showed for the first time on a national scale the specific characteristics of suicide in indigenous children, with high rates, and also identified priority areas for interventions.

Hidden Suicides of the Indigenous People of the Brazilian Amazon: Gender, Alcohol and Familial Clustering

OBJECTIVE

To evaluate the coverage, characteristics and the risk of suicide in the indigenous people of Tabatinga in the Brazilian Amazon.

METHODS

An active surveillance strategy for suicide cases was used: records of the Ministry of Health, the Municipal Health Secretariat, the Special Indigenous Health District of the Upper River Solimões (Distrito Sanitario Especial Indígena Alto Río Solimões), the Military Hospital of Tabatinga, the National Indian Foundation (Fundación Nacional del Indio) and the civil registry offices were examined from 2007 to 2011 for individuals over 9 years of age. Adjusted rates were estimated using the direct method and according to age. A descriptive analysis was performed and the hypothesis tests were considered significant if p-values were <0.05.

RESULTS

The coverage of indigenous suicide was 82.8%, since 11 (17.2%) were classified as hidden suicides. For men between 15 and 29 years of age, and for women aged from 12 to 20 years, the probability of suicide was around 70.0%. In 17.2% of the sample there was a record of alcohol consumption before death and relationship between victims. The corrected adjusted mortality rate was 111.7/100,000 (95% CI, 84.6-148.6).

CONCLUSIONS

The risk of suicide in the indigenous people of the Tabatinga is very high. Coping strategies should consider the complex relationship between suicide and alcohol consumption, gender differences and the existence of vulnerable groups, such as young people, especially those with close relatives who have committed suicide.

Trends and Spatial Patterns of Suicide Among Adolescent in Ecuador, 1997-2016

Background:

Suicide is a global public health problem, ranking among the top 20 leading causes of mortality.

Objective:

The aim of the present study is two-fold. Firstly, it describes the temporal trends of suicide in adolescents from 1997 to 2016 in Ecuador, allowing us to identify critical periods. Secondly, it analyzes the spatiotemporal clusters of high mortality rates and the spatial distribution due to suicide in the country, from 2011 to 2016.

Methods:

This is an ecological study; we included all death certificates of suicide among adolescents in the 10 - 19 age groups both sex, from the National Institute of Statistics and Census (INEC) database in Ecuador from 1997 to 2016. In order to assess the trend of suicide rates, we obtained Annual Percentage Changes (APCs) and average Annual Percent Changes (AAPCs) through Joinpoint regression analysis. Space-time scan statistics were used to identify high-risk clusters, and the spatial autocorrelation was evaluated through global Moran index.

Results:

Suicides at a national level increased from 165 deaths in 1997 to 286 deaths in 2016; rates increased from 12.7 to 23.3 per 100,000 population along with a significant increase of the trend at the national level (AAPC=3.7%; 95% CI: 2.1 to 5.2). We identified two significant spatial clusters for a high occurrence of suicide: the primary most likely cluster included 83 cantons (Risk Relative=2.28) while the second most likely cluster included 20 cantons (Risk Relative=1.74). The Global Moran I index for the study period showed a positive spatial autocorrelation (0.27; p = 0.001).

Conclusion:

Suicide rates in adolescents significantly increased over the 20-year study period; the spatial analysis indicates the presence of high occurrence clusters in the Amazon and Southern Highlands regions of the country. This growing phenomenon may be a reflection of the lack of policies and strategies focused on the adolescent’s mental health at a national level, added to factors such as family dysfunction, school failure, vulnerable ethnic groups, and immigration patterns.

Suicide in Brazilian indigenous communities: clustering of cases in children and adolescents by household

OBJECTIVE To estimate age and sex-specific suicide rates, compare suicide rates between indigenous communities, and quantify the frequency of intrafamilial suicide clustering. METHODS We performed a retrospective cohort study involving 14,666 indigenous individuals in reservations in Dourados, state of Mato Grosso do Sul, Brazil, from 2003 through 2013 using national and local census. RESULTS The overall suicide rate was 73.4 per 100,000 person-years. Adolescent males aged 15-19 and girls aged 10-14 had the highest rates for each sex at 289.3 (95%CI 187.5-391.2) and 85.3 (95%CI 34.9-135.7), respectively. Comparing the largest reservations, Bororo had a higher suicide rate than Jaguapiru (RR = 4.83, 95%CI 2.85-8.16) and had significantly lower socioeconomic indicators including income and access to electricity. Nine of 19 suicides among children under 15 occurred in household clusters. Compared with adult suicides, a greater proportion of child (OR = 5.12, 95%CI 1.89-13.86, p = 0.001) and adolescent (OR = 3.48, 95%CI 1.29-9.44, p = 0.017) suicides occurred within household clusters. CONCLUSIONS High rates of suicide occur among children and adolescents in these indigenous reservations, particularly in poor communities. Nearly half of child suicides occur within household clusters. These findings underscore the need for broad public health interventions and focused mental health interventions in households following a suicide.

[Impact of natural lithium ressources on suicide mortality in Chile 2000-2009: a geographical analysis]

BACKGROUND

There is increasing evidence for the hypothesis that lithium salts at naturally occurring levels in drinking water may have a moderating effect on suicide rates of the exposed population. The aim of this study was to examine whether the lithium rich Atacama region in Chile is associated with lower suicide mortality in comparison to other regions.

METHODS

Suicide data was acquired from the Chilean Ministry of Health. Socio-economic variables (rate of unemployment, urbanity, median household income, percentage of indeginous population) were obtained for all regions of Chile from the national statistical institute. We calculated annual suicide rates per 100,000 for each group for the years 2000-2009 and tested the hypothesis that suicide rates are lower in lithium rich regions in comparison to other regions of Chile.

RESULTS

The lithium rich Atacama Desert shows a significantly lower suicide rate (9.99 per 100,000) in comparison to other parts of Chile (12.50 per 100,000) (t = 4.75, df = 18, p < 0.001).

CONCLUSIONS

Chilean regions rich in naturally occurring lithium salts show lower suicide mortality rates in comparison to other regions. Although causality cannot be proven by this design, these findings add to previous findings and warrant further research on the effects of naturally occurring low-dose lithium on health.

Suicide in the Indigenous Population of Latin America: A Systematic Review

OBJECTIVE

Due to the high rates of suicide reported among many ethnic minorities, a systematic review is presented on suicide in indigenous populations of Latin America.

METHODS

Systematic review in PubMed, Scopus, PsycNET, Scielo and Scholar Google.

RESULTS

From an initial total of 1862 articles, 41 were included for data extraction. They include 21 from Brazil, 13 from Colombia, 2 from Chile, 1 from Peru, and 4 articles grouped from different countries. Suicide is a public health issue in many communities. Lifestyle changes, industrialisation, environmental degradation, and alcohol have led the indigenous population experiencing what has been described as "cultural death."

Narrativas indígenas sobre suicídio no Alto Rio Negro, Brasil: tecendo sentidos

Resumo Taxas de mortalidade por suicídio mais elevadas são recorrentemente encontradas em indígenas quando comparadas a populações circunvizinhas, inclusive em São Gabriel da Cachoeira, Amazonas, município brasileiro com maior percentual de autodeclarados indígenas. Entender como o suicídio é representado em contextos indígenas específicos é uma dimensão qualitativa, pouco explorada e relevante. O objetivo deste artigo foi analisar sete narrativas sobre sui cídio de um kumu (curandeiro tradicional) da mais populosa comunidade indígena de São Gabriel da Cachoeira. No processo analítico-interpretativo realizou-se uma dupla hermenêutica, ou seja, inter pretar a interpretação do narrador, buscando apoio na literatura etnográfica clássica e contemporânea, nas teorias sobre o processo de construção da pessoa e do parentesco no contexto ameríndio. A análise das narrativas permitiu reconstruir o suicídio como um fenômeno associado a conflitos que se ancoram pro fundamente em aspectos socioculturais e históricos dos povos indígenas daquela região, que remetem a tensões intergeracionais, de gênero e no campo do parentesco. O gerenciamento desses conflitos parece estar comprometido, já que estratégias tradicionais parecem perder a eficácia simbólica e outras não fo ram adequadamente encontradas para substituí-las. O consumo de álcool, embora seja um elemento im portante para compreensão do suicídio, não deveria ser tomado como elemento explicativo central, mas, sobretudo como um catalisador desses conflitos.

Spatial-temporal trends and risk of suicide in Central Brazil: an ecological study contrasting indigenous and non-indigenous populations

Objective:

To examine spatial-temporal distribution and risk of suicide, as well as trends in suicide mortality rates, in the indigenous and non-indigenous population of the state of Mato Grosso do Sul, Brazil.

Methods:

Data were obtained from the Information Department of the Brazilian Unified Health System. Deaths recorded as voluntary self-inflicted injuries (ICD-10 codes X60.0 to X84.9) were considered suicide. Suicide rates were estimated and adjusted by age in the population > 9 years of age. Kernel analysis was used to assess the spatial distribution of suicide cases, while trend analysis was carried out using a non-parametric test (Mann-Kendall).

Results:

The suicide risk among the indigenous population was 8.1 (95%CI 7.2-9.0) times higher than in the non-indigenous population. For indigenous residents in the 15-24 age group, the risk was 18.5 (95%CI 17.5-19.6) times higher than in the non-indigenous population. The majority of indigenous cases were concentrated in a few villages in reservation areas, mainly occupied by Guarani-Kaiowá and Guarani-Ñandeva groups. Rate patterns remained stable over time in both groups.

Conclusion:

Suicide is a serious public health problem in Mato Grosso do Sul, and has had an alarming and disproportionate impact on the indigenous population for more than a decade.

Jurupari se suicidou?: notas para investigação do suicídio no contexto indígena

No Brasil, há indícios de que alguns povos indígenas apresentam taxas de mortalidade por suicídio significativamente superiores às taxas nacionais e regionais. Por outro lado, evidências apontam para as dificuldades de se transpor categorias biomédicas ao contexto das sociedades indígenas, tendo em vista que estes se valem de referenciais simbólicos particulares para compreender o processo saúde-doença e a morte. O objetivo deste artigo foi refletir sobre as dificuldades para utilização do conceito de suicídio no contexto indígena, ponto crucial para abordagem deste tema através de uma perspectiva menos etnocêntrica. O caminho proposto para tal foi o de se recorrer ao chamado “estranhamento antropológico” do conceito biomédico de suicídio. Para tanto, nós fizemos a análise do mito do Jurupari amplamente difundido entre os povos indígenas da região do Alto Rio Negro, utilizando três perguntas norteadoras: Jurupari queria morrer?; Jurupari morreu?; Quem matou Jurupari? Para responder estas perguntas, recorreu-se a informações etnográficas sobre suicídio entre povos indígenas brasileiros. Através da análise realizada, demonstraram-se as dificuldades de transposição do conceito biomédico de suicídio para o contexto indígena. Isto foi feito na medida em que evidenciamos: 1) a amplificação das dificuldades de se falar de intencionalidade no contexto indígena; 2) as diferentes concepções indígenas sobre morte e morrer; 3) a complexa correlação entre suicídio e homicídio nos sistemas etiológicos nativos. Por fim, apresentaram-se, mesmo que de forma preliminar, algumas eventuais dificuldades como possíveis caminhos para abordagem do suicídio indígena, tanto por meio de estratégias qualitativas como quantitativas.

Suicides in the indigenous and non-indigenous populations in the Nenets Autonomous Okrug, Northwestern Russia, and associated socio-demographic characteristics

Background

To describe suicide rates in the indigenous and non-indigenous populations of the Nenets Autonomous Okrug (NAO) in 2002–2012, as well as associated socio-demographic characteristics.

Study design

Retrospective population-based mortality study.

Methods

Data from autopsy reports were used to identify 252 cases of suicide in the NAO in 2002–2012. Data on socio-demographic characteristics of these cases were obtained from passports and medical records at local primary health care units, and were then linked to total population data from the Censuses in 2002 and 2010. Suicide rates for the indigenous Nenets population and the non-indigenous population were standardized to the European standard population. The rates were also estimated according to different socio-demographic characteristics and compared by calculating relative risks.

Results

The crude suicide rates were 79.8 per 100,000 person-years (PYs) in the Nenets population and 49.2 per 100,000 PYs in the non-indigenous population. The corresponding standardized estimates were 72.7 per 100,000 PYs and 50.7 per 100,000 PYs. The highest suicide rates in the Nenets population were observed in the age group 20–29 years (391 per 100,000 PYs), and in females aged 30–39 years (191 per 100,000 PYs). Socio-demographic characteristics associated with high suicide rates in the Nenets population were age 20–39 years, male, urban residence, having secondary school or higher education, being an employee or employer, and being single or divorced. Males aged 20–29 years, and females aged 30–39 and aged 70 years and above had the highest suicide rates in the non-indigenous population (137.5, 21.6 and 29.9 per 100,000 PYs, respectively). The elevated suicide rates observed in the non-indigenous population were associated with male sex, rural residence, secondary school education, being an employee or employer, and being single or divorced.

Conclusions

Suicide rates in the NAO were substantially higher among the indigenous Nenets population than the non-indigenous population, and were associated with different socio-demographic characteristics.

Desigualdades na mortalidade por suicídio entre indígenas e não indígenas no estado do Amazonas, Brasil

OBJETIVO: Analisar as taxas e algumas características da mortalidade por suicídio entre indígenas e não indígenas no Amazonas. MÉTODO: Estudo de coorte retrospectiva, em que os dados de óbito foram obtidos no Sistema de Informações sobre Mortalidade e os populacionais no Instituto Brasileiro de Geografia e Estatística. Foram utilizados todos os registros de suicídio do período de 2006-2010 e a interpolação geométrica anual para a estimação das subpopulações. RESULTADOS: Ocorreram 688 suicídios no Amazonas, dos quais 19,0% em indígenas. A taxa ajustada de mortalidade por suicídio (TAMS) nos indígenas, de 18,4/100 mil, foi 4,4 vezes superior a dos não indígenas. A TAMS em indígenas aumentou 1,6 vez em 2010 em relação a 2006. Nos municípios de Tabatinga e São Gabriel da Cachoeira, as TAMS foram muito altas, 75,8 e 41,9/100 mil, respectivamente. CONCLUSÕES: Evidenciou-se o comportamento desigual das taxas de mortalidade por suicídio entre indígenas e não indígenas, expondo não só sua importância local, como também sua invisibilidade como problema de saúde pública, principalmente entre jovens 15 e 24 anos.