Abstract
Objectives: Wars and armed conflicts have a major impact on population health. As the discipline of public health aims to increase the health at population level, professionals play a significant role in dealing with war and armed conflict. There is need for research on prevention. This study aims to map the literature on existing public health approaches addressing the primary prevention of war and/or armed conflict.
Methods: We performed a scoping review in the databases Web of Science, PubMed and Google Scholar, followed by a narrative synthesis.
Results: We included 15 studies. We identified three main themes regarding preventive measures: 1) research on root causes of conflicts, surveillance and documentation of its health consequences; 2) education and awareness raising on the consequences of conflicts; and 3) interventions to change socio-economic and political conditions conducive to conflicts.
Conclusion: A two-tiered conceptual framework emerges: For primary prevention of war, public health should promote human rights and the rule of law. To prevent armed conflict within states, public health should address the social determinants of health and aim to reduce poverty and inequity.
Introduction
War is commonly defined as “a state of usually open and declared armed hostile conflict between states or nations” []. However, this definition is no longer adequate because it does not consider the most common types of armed conflict: Since 1945, few wars have involved the annexation of an entire country or large parts of a country []. Indeed, “we are increasingly facing internal armed conflicts, wars within states, and often conflicts involving non-state actors such as private armies and locally armed militia.” [3, p.678]; but also conflicts with at least one state actor []. International humanitarian law distinguishes between two types of armed conflict: Firstly, international armed conflicts, which are fought between two or more states, and secondly, non-international armed conflicts, which are fought between state armed forces and non-state armed groups or only between such groups []. Recent examples for the latter are the armed conflict in Sudan which began in April, 2023; and Hamas’s attack on Israel on 7 Oct 2023, followed by the war in Gaza. However, Russia’s war of annexation in Ukraine or China’s renewed threat to invade Taiwan show that wars of aggression between states are still relevant. To cover the entire range of definitions in this scoping review, we use both the term war and the term armed conflict. War is more oriented towards war between states, armed conflict towards conflicts within states.
Wars and armed conflicts have a major impact on the health of populations, making them a public health issue. Direct consequences include increased mortality and morbidity among civilians and combatants []. Indirect consequences are more difficult to assess. They include psychological trauma, increased need for medical treatment and rehabilitation of war victims, impoverishment of disputed areas, and a collapse of institutions, such as in health, security, and education []. Wars and armed conflicts also impair the environment, economies, and food security in the areas directly affected, or even globally, as the war in Ukraine is showing. These indirect consequences often cause more deaths in the long run than the war/conflict itself [, ].
Ensuring that all people live in peace and prosperity by 2030 is the main goal of the Sustainable Development Goals (SDGs). SDG16 in particular stands for reducing all forms of violence and related death rates []. As the discipline of public health aims to improve the health at population level, for example, through health interventions, public policy and education, it plays a significant role in dealing with the consequences of wars and armed conflicts. The only way to completely avoid these consequences, and thus safeguard the health of the population, is through prevention strategies. However, these pose a great challenge []. To analyze the potential stages at which war/armed conflict may be prevented or its effects minimized, the model of primary, secondary, and tertiary prevention—originally from the field of medicine—is often used. Primary prevention aims to prevent an event before it occurs and includes, among others, the creation of a healthy and safe environment, avoidance of health-damaging behaviors, and the promotion of associated skills, knowledge and understanding. Secondary prevention is about stopping events at an early stage, usually through early detection—in the case of conflicts at an initial stage. Tertiary prevention aims to reduce disability or death when conflicts are already underway []. Ideally, war should be prevented altogether by focusing on primary prevention strategies. Research in this area is urgently needed [–].
This review aims to map the literature on existing public health approaches addressing the primary prevention of war and armed conflict in order to provide an overview of the topic and identify key gaps, including suggestions for future research needs.
Methods
We conducted a scoping review to examine the current state of empirical research on public health frameworks, guides, or approaches addressing the primary prevention of war and armed conflict. A scoping review aims to capture the range of evidence in a particular research area, identify potential gaps and synthesize knowledge []. Unlike a systematic review, it allows for a broader scope and iterative approaches that are useful for identifying the nature and extent of ongoing research in all formats, including grey literature [], in line with our study objectives. We followed the steps of the PRISMA-ScR protocol [], thereby ensuring transparency and reproducibility.
Data Sources and Search Strategy
We searched PubMed, Web of Science and Google Scholar—considered as a database for grey literature—for literature published in English and German and available in full text; no restrictions were placed on the date and type of publication. We also searched the reference lists of the papers for further relevant literature. The search string included the principal terms “war,” “armed conflict,” “Public Health,” “Public Health framework” and “interven*,” “prevent*,” “measure*,” “action*.” The search was performed in February 2023 using the following search string in PubMed:
(war[Title/Abstract] OR “armed conflict”[Title/Abstract]) AND (“Public Health”[Title/Abstract] OR “Public Health approach*”[Title/Abstract] OR “Public Health framework*”[Title/Abstract] OR “Public Health guid*”[Title/Abstract]) AND (interven*[All Fields] OR prevent*[All Fields] OR measure*[All Fields] OR action*[All Fields]))
The search string was adapted to the other databases accordingly.
Study Selection
We screened titles and abstracts of records against a set of pre-defined inclusion and exclusion criteria. To cover a wide range of literature and existing definitions (see introduction), we use the terms war and armed conflict. To be eligible, records had to include the search terms “war,” “armed conflict” or any of the terms related to public health contained in the search string in their title or abstract. References had to describe public health approaches, frameworks or guidance reporting on primary prevention measures, actions or recommendations regarding war and/or armed conflict. We aim to provide an overview of the existing literature, so we posed no restrictions regarding the type of article (empirical, conceptual, etc.). Records focusing on consequences, outcomes, or impact of war, armed conflict, or (bio)terrorism on population health were excluded. We retrieved full texts of potentially eligible references and re-assessed them against the inclusion and exclusion criteria (see Table 1).
TABLE 1
| Inclusion | Exclusion |
|---|---|
| Search term components “war” and “public health” and “framework” as well as related terms (see search string in chapter “data sources and search strategy”) are mentioned in Title/Abstract | Studies with focus on |
| • Effects/consequences/outcomes/impact of war/armed conflict on population health | |
| • Nuclear/chemical weapons/war, (bio)terrorism | |
| • Violent conflict in general (sexual, intimate partner, etc. violence) | |
| • War on/prevention/epidemiology of COVID-19 and other diseases | |
| Studies not including a framework/approach, etc. of/regarding public health | |
| Studies including approaches to other public health topics than war/armed conflict | |
| Studies on war as a factor for other kinds of violence (intimate partner, sexual, etc.) | |
| (Clear/direct) connection to war/armed conflict is made | See above |
| Includes role of public health (profession) | No mentioning of role of public health (profession) |
| Written in English or German | Written in other languages |
Inclusion and exclusion criteria (Prevention of war: A scoping review on primary preventive measures in public health, Bielefeld, Germany. 2023).
Data Extraction and Analysis
We extracted data using a template covering features of primary prevention strategies regarding war and/or armed conflict. In addition, we documented challenges and limitations raised in the references to provide suggestions for further research. We followed the principles of narrative synthesis based on the Guidance on the Conduct of Narrative Synthesis in Systematic Reviews which is the most appropriate approach for analyzing diverse evidence []. Scoping reviews do not require a formal quality assessment; which in addition would have been challenging due to the many different types of papers included. This scoping review did not involve primary research with human subjects and therefore did not require institutional ethical approval.
Results
We identified a total of 1,723 records following the removal of duplicates and eight additional records in our Google Scholar search. After an initial screening of titles and abstracts, we considered 34 references for full text review. Of these, we identified 15 as eligible for inclusion (see Figure 1). An overview of the studies can be found in Table 2.
FIGURE 1
TABLE 2
| Reference | Type of article | Outcome |
|---|---|---|
| APHA (2009) [ | Policy statement | • Research on the root causes of war (on-going because causes and patterns of war change) and surveillance (estimates of deaths to raise awareness) |
| • Education of public health professionals, policymakers, and the public about the expected consequences of war and to advocate for alternative solutions to conflict | ||
| • Change in conditions: call for an updating and strengthening of the role of public health professionals | ||
| Burkle (2019) [ | Framework | • Interdisciplinary collaboration in research and surveillance, particularly between natural and social sciences, such as in global health |
| De Jong (2010) [ | Framework (based on a selective literature review) | • Interdisciplinary collaboration in research and surveillance: risk and protective factors are poorly confirmed by research; little is known about the extent to which these factors operate alone or in combination with other factors |
| • Education of public health professionals, policymakers, and the public about the expected consequences of war and to advocate for alternative solutions to conflict; health, education, and other sectors could promote reconciliation and cooperation by, e.g., setting policies to strengthen equitable health and education services, developing human resources through a cascade of training levels, providing educational materials, and establishing a monitoring and supervision system | ||
| • Change of conditions: need for effective police authority and fair criminal and dispute resolution systems; international law should focus on three areas: human rights, humanitarian laws and non-violent alternatives to dispute resolution; reducing unemployment and poverty, protecting the environment and ensuring basic security, wellbeing and justice; reduction of discrimination and ethnic inequalities; remove barriers to equal opportunities by providing equal access to basic facilities/services such as health services and education | ||
| Grundy et al. (2008) [ | Conceptual framework | • Early warning and surveillance systems |
| Hagopian and Samer (2022) [ | Statement | • Education and awareness: public health professionals need to address and be encouraged to address the prevention of war and to build a movement for peace |
| • Change of conditions: important to consider the aspects of corruption and greed in the war industry | ||
| Lang et al. (2002) [ | Strategy paper | • Education and promotion of tolerance |
| • Change of conditions: states should be disarmed or at least be reduced to a minimum of weapons, with a strong international capacity to mediate and intervene | ||
| Levy and Sidel (2003) [ | Discussion and analysis paper | • Promoting a culture of peace through education |
| • Change of conditions: addressing social, economic and cultural factors leading to war: poverty, social injustice; strict control of weapons | ||
| Levy et al. (2017) [ | Approach | • Need on valuable research: risk and protective factors are poorly confirmed by research; little is known about the extent to which these factors operate alone or in combination with other factors |
| • Raising awareness of consequences of war among professionals, NGOs, policymakers and public | ||
| • Change of conditions: working towards reducing poverty, income inequality, ethnic hatred; focus on climate change | ||
| Levy, B. (2022) [ | Book chapter | • Need for further research on risk and protective factors and their interaction |
| • Education and awareness raising: most important: dialogue and diplomacy: can prevent disputes and conflicts from arising through various forms of dialogue such as face-to-face negotiations and conferences | ||
| • Change of conditions: poor governance can contribute to the emergence of wars: improving citizen participation, e.g., through free elections, can make the government more accountable and strengthens governance | ||
| Murray et al. (2002) [ | Approach | • Need in research: collaboration between political scientists and public health researchers |
| Reza et al. (2018) [28] | Framework | • Need for further research on risk and protective factors and their interaction; identification of risk and protective factors: public health professionals should develop and assess interventions for the primary prevention of armed conflict and its health consequences, strategies to be evaluated: economic sanctions, peacekeeping measures by the United Nations, education about the danger of landmines as preparation of the civilian population for a possible war; identification of the most effective methods (together with epidemiologists and professionals in other relevant scientific disciplines) |
| • Education of the public and professionals | ||
| Sidel and Levy (2006) [29] | Commentary | • Argue for a surveillance system to monitor health outcomes |
| Valenti et al. (2007) [ | Approach | • Identification of risk factors and scope of problem through data collection/research |
| • Education of decision-makers about health consequences and human costs; raising awareness through public health campaigns (e.g., mass media campaigns); advocacy of (more) comprehensive health and medical policies addressing root causes of war | ||
| Wiist et al. (2014) [30] | Commentary | • Research and surveillance: conducting regular risk and policy analyses and environmental assessments, especially those involving multiple stakeholders |
| • Education and awareness raising: inclusion of war and armed conflict in school curricula | ||
| • Change of conditions: (stronger) control, reduction and outlawing of weapons within states, e.g., through appropriate legislation, or multilateral or bilateral treaties; updating and strengthening of the role of public health professionals (focus too much on the effects of war rather than on its prevention) | ||
| WHO (2020) [ | Approach | • Research: need to conduct and/or learn from existing conflict/risk analyses, inclusion of stakeholder analyses and mapping root and proximate causes, triggers, conflict dynamics and peace capacities, identification of relevant drivers |
| • Education/awareness raising: Suggests the design of peace-responsive health interventions: aim to improve trust between potential groups of conflict 1) improve trust between the state and its citizens by, e.g., expanding social protection and justice in underserved areas; 2) public health professionals could serve as a platform for belligerents restoring contacts and collaborations 3) need of trust-building and inclusive processes that promote dialogue to improve the relations between individuals and communities |
Characteristics of studies included (Prevention of war: A scoping review on primary preventive measures in public health, Bielefeld, Germany. 2023).
The type of references are statements, commentaries or frameworks/approaches and one book chapter. Seven of them were published before 2010, the other eight after 2010. The references are clustered according to three main themes regarding primary preventive measures: 1) research on root causes of conflicts, surveillance and documentation of health consequences, 2) education and awareness raising on the consequences of conflicts and promotion of peace, and 3) interventions to change socio-economic and political conditions conducive to conflicts.
Research on Root Causes of Conflicts, Surveillance and Documentation of Health Consequences
Twelve of the 15 references [
According to the American Public Health Association [
Building on the identification of risk and protective factors, public health professionals should also develop and assess interventions for the primary prevention of armed conflict and its health consequences, according to Reza et al. [28]. As strategies to be evaluated, they list, for example, economic sanctions, peacekeeping measures by the United Nations or education about the danger of landmines as preparation of the civilian population for a possible war [28].
Education (of Professionals, Policymakers and the Public) and Awareness Raising on the Consequences of Conflicts and Promotion of Peace
11/15 references [
According to APHA (American Public Health Association) [
Interventions to Change Socio-Economic and Political Conditions
A higher-level public health issue that we found in eight out of 15 [
Five Refs. [
Beyond legislation, more fundamental initiatives such as rural development, for example, increasing food production, can help to strengthen economic capacity and improve food security, resilience and quality of life [
The approaches identified also raise criticism. APHA [
Additionally, the references often do not directly distinguish between war and armed conflict in their approaches; the terms are mostly used synonymously. However, based on our definitions of these terms (see background chapter), primary prevention approaches can be derived for both wars of aggression and armed conflicts.
Discussion
The aim of this study was to map the literature on existing public health approaches addressing the primary prevention of war and/or armed conflict. We identified a range of measures covering the areas of 1) research on root causes of conflicts, surveillance and documentation of health consequences, 2) education of professionals, policymakers and the public, awareness raising on the consequences of conflicts and promotion of peace, and 3) interventions to change socio-economic and political conditions.
A first striking finding was that many references focus on the prevention of armed conflict rather than on war of aggression, which include wars of annexation such as Russia’s war in Ukraine. One reason for this could be that since 1945, there have been few wars in which an entire country or large parts of it were annexed, and most studies included here were published before Russia’s full-scale invasion of Ukraine in 2022. Moreover, many references come from the same group of authors with a pronounced pacifist stance, who seemed to have been optimistic that such wars were no longer a major risk (especially Barry S. Levy and Victor Sidel). Ultimately, many papers remained on the surface of primary prevention measures.
The call for stricter gun laws and caps on military spending to prevent wars and armed conflicts may also stem from this pacifist orientation. Restricting gun ownership among civilians would likely prevent deaths and injury [
Poor governance as one of the root causes of war is also a recurring theme. As a preventive strategy, for example, Levy [
While strengthening human rights may well serve to prevent war, we found that public health professionals are mentioned mainly in roles in research as well as education and awareness raising among policymakers and the public, rather than in changing socioeconomic and policy conditions. In addition, most papers suggest few concrete measures to prevent war and armed conflict and only partially address public health. Due to criticism that wars are too controversial and political for the public health profession, there is a call to strengthen the role of the profession [
Namer et al. [36] and Cunningham and Wandschneider [37] refer to taking a more active role in relation to schools of public health. Namer et al. [36] point out that it is important to broaden the scope to reflect how public health actors from many disciplines contribute to peacebuilding. Secondly, they state, that the schools are strongly committed to protecting the health of the population in the broadest sense, both in practice and in theory, by bringing together different levels and sectors. And third, Namer et al. [36] argue that schools of public health could use their tools to study, for example, the consequences of armed conflict on mental and physical health. Results of our review also highlight the relevance of public health schools and related training of professionals [
Public health professionals can help raise awareness about conflict prevention. This can include collecting accurate data, educating decision-makers and colleagues about the human costs of armed conflict, and advocating for more comprehensive health and medical policies [
Public health professionals cannot act alone in preventing war and armed conflict. Multiple actors from different disciplines are required, particularly with regard to the structures and systems identified under the theme policy and governance that need to be fundamentally changed. For example, a holistic approach to sustainable food systems development, as called for in one approach in the review [
The evidence base for the effectiveness of current interventions is thin. This may be due to the complex interconnectedness and diversity of causes of war, which complicate the evaluation of interventions [42]. Although mentioned by only one source in our review, the assessment of such strategies is of great importance to ensure the sustainability and effectiveness of health interventions; it can reveal strengths and weaknesses and thus improve existing strategies [43]. One reason regarding the low number of mentions or implementation could be the paucity of research and the difficulty in conducting such evaluations. In addition, Cramer et al. [44] address two challenges in the context of war prevention: 1) long causal chains from interventions to impacts, and 2) fundamental challenges due to the lack of clear knowledge about the counterfactual situation. Furthermore, Böck Buhmann [42] points to the difficulty of finding methods for assessing the peace policy impact of an intervention and to methods that are applied so differently that comparison is problematic. Finally, from a statistical point of view, the number of wars is small, further complicating effectiveness measurements.
Strengths and Limitations
By conducting a scoping review, we were able to examine a broad range of themes and identify gaps in the evidence of primary preventive measures regarding wars and armed conflicts in public health. Our search was extensive and based on defined inclusion and exclusion criteria. Upcoming issues were resolved in consultation with the co-authors. However, several limitations must be mentioned. Firstly, the primary search in the databases was conducted by a single reviewer, which may have led to bias regarding the decision (not) to include literature. To minimize this bias, a second reviewer checked the results and suggested additional references. The inclusion and exclusion criteria are very broad to be able to include as many studies as possible. This may make it difficult for other researchers to evaluate the findings. Another limitation is the lacking differentiation of the definitions of war and armed conflict due to the high heterogeneity of the use of these terms in the present studies. This has made our analysis very broad. There may also have been a bias in identifying and documenting findings due to the restriction to German and English articles.
Conclusion and Recommendations
The aim of this review was to survey the literature on existing public health approaches to primary prevention of war and armed conflict to provide an overview of the topic and identify key gaps, including suggestions for future research needs. Notable were the focus on armed conflict rather than on wars of aggression; and the small number of concrete measures addressing the primary prevention of war from a public health perspective.
The results can be condensed in a two-tiered conceptual framework:
To prevent wars between states, public health can promote human rights and the rule of law, either directly through political work or indirectly through equitable access to justice and interventions against discrimination or gender-based violence.
To prevent armed conflicts within states, public health interventions should address the social determinants of health and aim to reduce poverty and inequality. This can be achieved by improving access to education and healthcare. Education can promote understanding and dialogue between groups. Such interventions can strengthen social cohesion and help reduce the likelihood of conflict and violence. Economic development also plays a role, but falls outside the scope of public health (apart from the fact that health is a prerequisite for participation in the labor market). Again, public health can promote human rights and the rule of law, either directly through policy work or indirectly through equitable access to justice and interventions against discrimination or gender-based violence.
Further research should focus not only on armed conflicts but also on wars of aggression. Researching the causes of armed conflicts and wars as well as their influence on each other is a prerequisite for developing preventive measures and testing their effectiveness. Since wars and armed conflicts are often associated with poverty or social inequality, a holistic society approach is needed for their primary prevention.
Statements
Author contributions
T-MB is the guarantor of the review. T-MB and OR developed the study idea, design and conceptualization in the context of looking at causes of refugee migration in the project PH-LENS, supported by ideas from the ASPHER (The Association of Schools of Public Health in the European Region) taskforce “war and public health.” OR obtained funding. T-MB conducted screening and data extraction. T-MB drafted the manuscript; OR significantly contributed to extending the scope of literature and to the writing. OR revised various versions of the manuscript critically for intellectual content. All authors contributed to the article and approved the submitted version.
Funding
This study received funding from Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) for Research Unit FOR2928 PH-LENS, subproject DEPRIV. The funder was not involved in the study design, collection, analysis, interpretation of data, the writing of this article or the decision to submit it for publication. We acknowledge support for the publication cost by the Open Access Publication Fund of Bielefeld University and the Deutsche Forschungsgemeinschaft (DFG).
Conflict of interest
The authors declare that they do not have any conflicts of interest.
Abbreviations
APHA, American Public Health Association; ASPHER, Association of Schools of Public Health in the European Region; IPPNW, International Physicians for the Prevention of Nuclear War; SDGs, Sustainable Development Goals; TMA, Turkish Medical Association; WHO, World Health Organization.
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Summary
Keywords
public health, war, scoping review, primary prevention, armed conflict
Citation
Brake T-M and Razum O (2024) Prevention of War: A Scoping Review on Primary Preventive Measures in Public Health. Public Health Rev 44:1606201. doi: 10.3389/phrs.2023.1606201
Received
15 May 2023
Accepted
13 December 2023
Published
04 January 2024
Volume
44 - 2023
Edited by
Priscilla Robinson, La Trobe University, Australia
Reviewed by
Two reviewers who chose to remain anonymous
Updates

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Copyright
© 2024 Brake and Razum.
This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. PHR is edited by the Swiss School of Public Health (SSPH+) in a partnership with the Association of Schools of Public Health of the European Region (ASPHER)+
*Correspondence: Oliver Razum, oliver.razum@uni-bielefeld.de
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