Research conducted in rural communities of Kyrgyzstan has identified four groups of health risks potentially linked to climate change. These risks include heat stress, cardiovascular diseases, respiratory, zoonotic, as well as water and foodborne infections. Researchers warn that the link between these phenomena is not always direct, but changes in temperature, precipitation, glacier status, and water availability are already transforming the environment where health threats arise.
Climate change in Central Asia is ceasing to be solely an environmental, energy, or agricultural issue; it is beginning to have a direct impact on public health. This occurs due to extreme heat, water shortages, changes in pasture conditions, the spread of dust and allergens, and the interaction between humans and domestic and wild animals, which affects food safety.
Preliminary results from a large study covering rural and pastoral communities in Kyrgyzstan were presented on September 15 in Bishkek at the Second Regional Conference on the 'One Health' concept. The CCHALKK project investigates how climate change affects human health in rural areas and how these processes relate to natural resources, livestock production, and the environment.
In the first phase of the study, 13 locations in the regions of Batken, Issyk-Kul, Jalal-Abad, Naryn, Osh, and Talas were examined. 453 people participated, and 145 interviews and focus groups were conducted. Participants included medical and veterinary specialists, livestock owners, water and pasture experts, representatives of rural communities, and wildlife specialists.
Hotter, Drier, and Less Predictable
Participants from different areas reported similar climatic changes: summers have become hotter, days of extreme heat have increased, precipitation has become irregular, winters shorter, and snow cover less reliable.
Water resources have become a separate problem. Participants noted the rapid melting of glaciers, signs of which they assessed have accelerated particularly over the last five years. Some communities are already facing threats or consequences for water security, especially in the lower reaches of watersheds.
Nevertheless, researchers were interested not only in how the climate is changing but also in the pathways through which these changes might ultimately affect human health. Four broad risk groups were preliminarily identified: heat stress and heatstroke, cardiovascular diseases, respiratory diseases, and changes in the distribution of zoonotic, vector-borne, and water/foodborne infections.
The authors emphasize an important condition: not every observed change in morbidity can be unequivocally attributed to the climate. Health is simultaneously influenced by infrastructure, socio-economic conditions, quality and access to healthcare, and many other factors. Therefore, the data obtained remain preliminary and point to potential links requiring further verification with quantitative data.
From Extreme Heat to Heart and Lungs
Extreme heat represents one of the most obvious pathways of impact. Researchers recorded reports of an increase in cases of heat stress and heatstroke. In some communities, participants also reported exacerbations of cardiovascular problems, including hypertension and strokes.
The potential chain of events is quite simple: an increase in the number of days with extreme heat and rising average summer temperatures place additional strain on the human body, while water scarcity can further increase population vulnerability. According to preliminary findings of the project, cardiovascular problems may affect a wider age range, including outdoor workers, rural residents, and even schoolchildren.
The link to respiratory diseases is more complex. Changes in temperature and precipitation can affect soil and pastures. Land degradation, loss of soil moisture, changes in vegetation, and increased suspended dust create an additional set of irritants. Therefore, researchers are studying the possibility of worsening allergies, asthma, and other infectious and non-infectious respiratory diseases. This chain starts far beyond the hospital: climate—water and pastures—soil and vegetation—dust and allergens—human health.
When Disappearing Water Becomes a Health Problem
The relationship between climate, water, and infectious diseases is even more multifaceted. Reduced water availability for agriculture and domestic needs can intensify competition for water sources between humans and animals. Simultaneously, pasture degradation and changes in grazing patterns increase contact between domestic livestock and wildlife.
Extreme weather conditions create another risk pathway: floods and storms can contaminate groundwater, crops, and food products. Thus, climate change could potentially alter the conditions for the spread of both water and foodborne infections, as well as animal or vector-borne infections to humans.
Echinococcosis serves as an illustrative example. In 5 out of 13 studied sites, or approximately 38 percent of cases, participants reported that incidence was either not decreasing or was even increasing. However, the authors do not interpret this as proof of a causal link with the climate; rather, they view it as a signal requiring further analysis. It is important to understand that climate rarely causes disease on its own; instead, it alters the conditions in which water, humans, animals, disease vectors, and healthcare systems interact.
Heat Also Affects Food Safety
Another presentation at the conference, given by epidemiologist Jamila Silemonshoeva, highlighted another possible way climate influences health: food safety. Her study is an analytical review of publications from 2016 to 2026, examining human health, livestock, and the environment simultaneously.
According to the review, high temperatures can accelerate the proliferation of food pathogens, heat stress weakens livestock immunity, and warming water and drought create additional risks throughout the food chain. Risks also extend to ordinary households. During periods of intense heat, the temperature inside household refrigerators can rise to 7–10°C instead of the recommended 2–6°C, and the shelf life of food can be reduced by two or three times, according to data presented in the review.
Proposed response measures include enhanced epidemiological surveillance on farms and in water supply systems, maintaining the cold chain, and adapting sanitary standards to regional climatic conditions.
Climate Policy Becomes Health Policy
The preliminary study does not yet allow for reducing climate change and disease patterns to a simple cause-and-effect formula. It demonstrates something else: the boundary between climate policy and health policy is becoming increasingly blurred. Higher temperatures can cause heat stress. Reduced water availability can change grazing patterns and concentrate animals around remaining water sources. Land degradation can increase dust and allergen levels. Changes in contact patterns between humans, livestock, and wildlife can alter the risks of infectious diseases.
Researchers suggest analyzing public health data parallel to meteorological and environmental indicators, conducting risk mapping, and more closely integrating health planning with water resource management, pasture management, and other natural resources. For Central Asia, this marks an important shift: adaptation to climate change is gradually transforming from a question of water, energy, and agriculture into a question of health.