WARS rarely remain confined to the battlefield.

While images of conflict often focus on military operations and political tensions, the deeper and longer-lasting consequences are frequently felt in public health. The ongoing tensions involving Iran demonstrate how warfare can quickly evolve into a humanitarian and global health crisis. From damaged hospitals and medicine shortages to psychological trauma and disease outbreaks, the health effects of war extend far beyond the front lines, affecting populations across regions and globally. One of the most immediate health consequences of armed conflict is the surge in injuries and deaths. As fighting intensifies, hospitals must cope with large numbers of trauma patients requiring emergency surgery, intensive care and long-term rehabilitation. Health systems already under strain are forced to redirect resources toward war-related injuries, often delaying or suspending routine services such as maternal care, childhood immunization and treatment for chronic diseases. Consequently, preventable illnesses and deaths increase even among those not directly affected by fighting.

Damage to health infrastructure is another critical concern. Hospitals, clinics, laboratories and ambulances may be destroyed, damaged or forced to close due to insecurity. Health workers often face threats to their safety and may flee conflict zones. The loss of trained medical personnel and functioning facilities can quickly paralyze a health system. When hospitals close, communities lose access to essential services, including childbirth care, vaccinations, emergency surgery and disease diagnosis. In many conflicts, more people die from the collapse of healthcare services than from direct violence. Disruptions to medical supply chains further compound the crisis. Modern healthcare relies on international networks to deliver medicines, vaccines and equipment. Conflicts can interrupt transportation, close airports, damage roads and disrupt shipping channels. Hospitals may face shortages of essential medicines and life-saving treatments. Temperature-sensitive medications—such as vaccines, insulin and certain cancer therapies—require reliable cold-chain transport, which is difficult to maintain amid prolonged instability. Interruptions in supply chains can be life-threatening for patients with chronic illnesses.

Population displacement also magnifies health risks. Families fleeing violence often shelter in overcrowded camps, temporary shelters or unfamiliar urban areas. Limited access to clean water, sanitation and healthcare increases the risk of infectious diseases, including respiratory infections, diarrheal illnesses and measles. Children, pregnant women and the elderly are particularly vulnerable. When displaced populations cross borders, neighboring countries face additional pressure on their health systems. Environmental damage caused by warfare further threatens public health. Attacks on fuel depots, industrial facilities and energy infrastructure can release harmful pollutants into the air and water. Fires, explosions and chemical leaks may expose communities to toxic substances that cause respiratory illnesses, skin conditions and long-term health complications. Contaminated water supplies and damaged sanitation systems can further increase the risk of disease outbreaks. These environmental effects often persist long after conflicts end.

The mental health impact of war is another often-overlooked consequence. Exposure to violence, displacement and loss can lead to widespread psychological trauma, including anxiety, depression, grief and post-traumatic stress disorder. Children growing up in war-affected environments may face long-term emotional and developmental challenges. Unfortunately, mental health services are often among the most limited resources during conflicts, leaving affected populations without adequate psychological support. Managing chronic diseases becomes far more difficult during war. Patients requiring regular treatments—such as dialysis, insulin or chemotherapy—may suddenly lose access to essential care, with even short interruptions proving life-threatening.

Conflicts involving major regional powers can have global health implications. Disruptions in international transport and rising fuel prices may increase the cost of medicines worldwide. Economic instability can strain government budgets, especially in low- and middle-income countries, reducing spending on health programs, vaccination campaigns and disease surveillance. Such setbacks can undermine global efforts to control infectious diseases and strengthen public health systems. The Iran conflict highlights a crucial lesson: war is not only a military or political event but also a profound public health emergency. Protecting hospitals, health workers and humanitarian supply chains must remain a global priority. International humanitarian law mandates the protection of medical facilities and healthcare personnel at all times. Ultimately, the best safeguard for global health is peace. Preventing conflicts through diplomacy and international cooperation remains the most effective strategy to protect civilian populations and maintain functioning health systems. In an increasingly interconnected world, the health consequences of war in one region can quickly affect others. Recognizing this reality is essential for building a safer and healthier future for all.

—The writer is a Public Health Consultant.

© Pakistan Observer