Background: Climate change is one of the great challenges of our time. The consequences of climate change on exposed biological subjects, as well as on vulnerable societies, are a concern for the entire scientific community. Rising temperatures, heat waves, floods, tornadoes, hurricanes, droughts, fires, loss of forest, and glaciers, along with disappearance of rivers and desertification, can directly and indirectly cause human pathologies that are physical and mental. However, there is a clear lack in psychiatric studies on mental disorders linked to climate change. Methods: Literature available on PubMed, EMBASE, and Cochrane library until end of June 2019 were reviewed. The total number of articles and association reports was 445. From these, 163 were selected. We looked for the association between classical psychiatric disorders such as anxiety schizophrenia, mood disorder and depression, suicide, aggressive behaviors, despair for the loss of usual landscape, and phenomena related to climate change and extreme weather. Review of literature was then divided into specific areas: the course of change in mental health, temperature, water, air pollution, drought, as well as the exposure of certain groups and critical psychological adaptations. Results: Climate change has an impact on a large part of the population, in different geographical areas and with different types of threats to public health. However, the delay in studies on climate change and mental health consequences is an important aspect. Lack of literature is perhaps due to the complexity and novelty of this issue. It has been shown that climate change acts on mental health with different timing. The phenomenology of the effects of climate change differs greatly-some mental disorders are common and others more specific in relation to atypical climatic conditions. Moreover, climate change also affects different population groups who are directly exposed and more vulnerable in their geographical conditions, as well as a lack of access to resources, information, and protection. Perhaps it is also worth underlining that in some papers the connection between climatic events and mental disorders was described through the introduction of new terms, coined only recently: ecoanxiety, ecoguilt, ecopsychology, ecological grief, solastalgia, biospheric concern, etc. Conclusions: The effects of climate change can be direct or indirect, short-term or longterm. Acute events can act through mechanisms similar to that of traumatic stress, leading
Pollutant agents are exponentially increasing in modern society since industrialization processes and technology are being developed worldwide. Impact of pollution on public health is well known but little has been described on the association between environmental pollutants and mental health. A literature search on PubMed and EMBASE has been conducted and 134 articles published on the issue of pollution and mental health have been included, cited, reviewed, and summarized. Emerging evidences have been collected on association between major environmental pollutants (air pollutants, heavy metals, ionizing radiation [IR], organophosphate pesticides, light pollution, noise pollution, environmental catastrophes) and various mental health disorders including anxiety, mood, and psychotic syndromes. Underlying pathogenesis includes direct and indirect effects of these agents on brain, respectively, due to their biological effect on human Central Nervous System or related to some levels of stress generated by the exposure to the pollutant agents over the time. Most of emerging evidences are still nonconclusive. Further studies should clarify how industrial production, the exploitation of certain resources, the proximity to waste and energy residues, noise, and the change in lifestyles are connected with psychological distress and mental health problems for the affected populations.
Introduction: Mental health in indigenous communities is a relevant issue for the World Health Organization (WHO). These communities are supposed to live in a pure, clean and intact environment. Their real condition is far different from the imaginary; they are vulnerable populations living in difficult areas, exposed to pollution, located far from the health services, exposed to several market operations conducted to extract natural resources, facing criminal groups or illegal exploitation of land resources. These factors may have an impact on mental health of indigenous population. Methods: We reviewed all papers available on PubMed, EMBASE and The Cochrane Library until December 2018. We focused on those factors affecting the changes from a traditional to a post-modern society and reviewed data available on stress-related issues, mental distress affecting indigenous/aboriginal communities and the role of Traditional Medicine (TM). We reviewed articles from different countries hosting indigenous communities. Results: The incidence of mental distress and related phenomena (e.g. collective suicide, alcoholism and violence) among indigenous populations is affected by political and socio-economic variables. The mental health of these populations is poorly studied and described even if mental illness indicators are somewhat alarming. TM still seems to have a role in supporting affected people and may reduce deficiencies due to poor access to medical insurance/coverage, psychiatry and psychotherapy. It would be helpful to combine TM and modern medicine in a healthcare model to face indigenous populations’ health needs. Conclusion: This review confirms the impact of societal changes, environmental threats and exploitation of natural resources on the mental health of indigenous populations. Global Mental Health needs to deal with the health needs of indigenous populations as well as psychiatry needs to develop new categories to describe psychopathology related to social variance as recently proposed by the Diagnostic and Statistical Manual of Mental Disorders (5th ed.; DSM-5).
Climate change is one of the biggest challenges of our times. Its impact on human populations is not yet completely understood. Many studies have focused on single aspects with contradictory observations. However, climate change is a complex phenomenon that cannot be adequately addressed from a single discipline’s perspective. Hence, we propose a comprehensive conceptual framework on the relationships between climate change and human responses. This framework includes biological, psychological, and behavioural aspects and provides a multidisciplinary overview and critical information for focused interventions. The role of tipping points and regime shifts is explored, and a historical perspective is presented to describe the relationship between climate evolution and socio-cultural crisis. Vulnerability, resilience, and adaptation are analysed from an individual and a community point of view. Finally, emergent behaviours and mass effect phenomena are examined that account for mental maladjustment and conflicts.
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