Tashkent, Uzbekistan (UzDaily.uz) — Field research in rural communities in Kyrgyzstan has identified four groups of health risks potentially linked to a changing climate — from heat stress and cardiovascular disease to respiratory, zoonotic, and water- and food-borne infections. Researchers caution that the links are not always direct, but changes in temperature, precipitation, glaciers, and water availability are already reshaping the environment in which health risks emerge.
Climate change in Central Asia is increasingly becoming more than an environmental, energy, or agricultural issue. It is beginning to affect public health through extreme heat, water scarcity, changes in pasture conditions, the spread of dust and allergens, interactions between people and domestic and wild animals, and food safety.
Preliminary findings from a major study of rural and livestock-keeping communities in Kyrgyzstan were presented on September 15 in Bishkek at the Second Regional One Health Conference.
The CCHALKK project examines how climate change affects human health in rural communities and how these processes are connected to environmental conditions, livestock production, and natural resources.
During its first phase, the study covered 13 sites across the Batken, Issyk-Kul, Jalal-Abad, Naryn, Osh, and Talas regions. A total of 453 people participated, while researchers conducted 145 interviews and focus groups. Participants included medical and veterinary professionals, livestock owners, water and pasture specialists, representatives of rural communities, and wildlife experts.
Hotter, Drier, and Less Predictable
Participants from different areas reported similar environmental changes: hotter summers and more days of extreme heat, irregular precipitation, shorter winters, and less reliable snow cover.
Water is becoming a separate concern.
Participants reported rapid glacier retreat, with signs of these changes, in their assessment, accelerating particularly over the past five years. Some communities are already experiencing impacts or threats to water security, especially downstream within watersheds.
The researchers, however, were interested not only in how the climate is changing, but also in the pathways through which those changes could eventually affect human health.
Four broad groups of risks were preliminarily identified: heat stress and heatstroke, cardiovascular disease, respiratory disease, and changes in the distribution of zoonotic, vector-borne, and water- and food-borne diseases.
The authors stress an important caveat: not every observed change in disease patterns can be attributed to climate. Health is simultaneously affected by infrastructure, socioeconomic conditions, access to and quality of healthcare, and numerous other factors.
The findings therefore remain preliminary and indicate potential associations that will require further testing against quantitative data.
From Extreme Heat to the Heart and Lungs
Extreme heat represents one of the most direct pathways.
Researchers documented reports of increasing heat stress and heatstroke. In some communities, participants also reported worsening cardiovascular problems, including hypertension and strokes.
The potential chain is relatively straightforward: more days of extreme heat and higher average summer temperatures place additional stress on the human body, while water scarcity may further increase population vulnerability.
According to the project's preliminary conclusions, cardiovascular impacts could affect a broader age range, including outdoor workers, rural residents, and even schoolchildren.
The connection with respiratory disease is more complex.
Changes in precipitation and temperature can affect soils and pastures. Land degradation, loss of soil moisture, changing vegetation, and greater amounts of airborne dust create an additional set of irritants.
Researchers are therefore examining the potential worsening of allergies, asthma, and other infectious and non-infectious respiratory diseases.
The resulting chain begins far outside a 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 disease is more complex still.
Declining water availability for agriculture and domestic use can intensify competition for water sources between people and animals. At the same time, pasture degradation and changing grazing patterns can increase contact between livestock and wildlife.
Extreme weather creates another pathway of risk: floods and storms can contaminate groundwater, crops, and food products.
Climate change can therefore potentially alter the conditions under which both water- and food-borne diseases and infections transmitted from animals or vectors to humans spread.
Echinococcosis provides one illustrative example. At 5 of the 13 study sites, or roughly 38 percent, participants reported that incidence may not be declining or may even be increasing. The authors, however, do not interpret this as evidence of climate causation. Rather, they treat it as a signal requiring further analysis.
That distinction is important: climate rarely creates a disease by itself. Instead, it changes the conditions in which water, people, animals, disease vectors, and health systems interact.
Heat Is Also Changing Food Safety
Another presentation at the conference, by epidemiologist Jamila Silemonshoeva, highlighted another possible pathway of climate-related health impacts: food safety.
Her study is an analytical review of publications from 2016 to 2026 and simultaneously examines human health, agricultural animals, and the environment.
According to the review, high temperatures can accelerate the multiplication of food-borne pathogens, heat stress can weaken livestock immunity, while warming water and drought can create additional risks throughout the food chain.
The risks also extend into ordinary households. During periods of extreme heat, temperatures inside domestic refrigerators can rise to 7–10°C instead of the recommended 2–6°C, while the shelf life of food may fall by a factor of two or three, according to data presented in the review.
The proposed responses include stronger epidemiological surveillance at farms and in water systems, maintaining the cold chain, and adapting sanitary standards to the region's climatic conditions.
Climate Policy Is Becoming Health Policy
The preliminary research does not yet allow changes in climate and disease patterns to be reduced to a simple cause-and-effect formula.
It demonstrates something else: the boundary between climate policy and health policy is becoming increasingly difficult to draw.
Higher temperatures can lead to heat stress. Declining water availability can change grazing patterns and concentrate animals around remaining water sources. Land degradation can increase dust and allergens. Changing patterns of contact among people, livestock, and wildlife can reshape infectious-disease risks.
Researchers therefore propose analyzing public-health data alongside meteorological and environmental indicators, conducting risk mapping, and more closely integrating healthcare planning with the management of water, pastures, and other natural resources.
For Central Asia, this represents an important shift: adapting to climate change is gradually becoming more than a question of water, energy, and agriculture. It is becoming a question of health.
