Why Your Cough Won't Go Away: Doctors Say Climate Change Could Be the Hidden Reason
PremiumClimate change, pollution, and longer allergy seasons are increasing persistent coughs, slowing recovery, and raising respiratory risks, doctors warn. Why Your Cough Won't Go Away: Is Climate Change to. . .
PremiumClimate change, pollution, and longer allergy seasons are increasing persistent coughs, slowing recovery, and raising respiratory risks, doctors warn. Why Your Cough Won't Go Away: Is Climate Change to Blame?A cough that refuses to go away is becoming an increasingly common complaint, even after a cold or viral infection has resolved. Pulmonologists and respiratory specialists say climate change, worsening air pollution, and longer allergy seasons are changing the way respiratory illnesses behave, making coughs last longer and recovery more difficult. From rising temperatures and prolonged heatwaves to poor air quality and unpredictable rainfall, environmental changes are creating the perfect conditions for airway inflammation, allergies, and respiratory infections. Experts warn that climate change is no longer just an environmental issue - it is rapidly becoming a major public health concern. How climate change is affecting respiratory healthAccording to Dr. Arjun P, Senior Consultant, Department of Pulmonology, KIMS Health, India's changing weather patterns are increasing the burden of respiratory diseases. “India is one among the countries with poor air quality. During winter, cities like Delhi experience severe smog, while many urban areas struggle with vehicle emissions, industrial pollution, and dust. A rise in temperature also increases the formation of ground-level ozone, a pollutant that irritates the airways and can trigger persistent cough, especially in people with asthma,” he said. Rising temperatures also increase the formation of ground-level ozone, a pollutant that irritates the lungs and airways. Exposure to ozone can trigger persistent coughing, worsen asthma symptoms, and increase breathing difficulties in people with chronic obstructive pulmonary disease (COPD). India's changing weather patterns are increasing the burden of respiratory diseasesWhy may your cough last longer?Climate change is increasing the frequency of heatwaves, dust storms, and even wildfires in some regions. These events release microscopic pollutants such as PM2. 5, tiny particles capable of penetrating deep into the lungs. Once inhaled, these particles cause inflammation that can prolong cough, wheezing, chest tightness, and breathlessness long after an infection has cleared. Warmer air holds more allergens and pollutants, while unpredictable weather creates ideal conditions for viruses and irritants to persist. "Hot one day, humid or rainy the next, weather patterns repeatedly expose the airways to environmental triggers, slowing recovery and making respiratory symptoms linger,” said Dr. Nirmal Mathew Alex, Associate Consultant, Internal Medicine, Apollo Adlux Hospital. “Moreover, due to prolonged pollen seasons as a result of climate change, it is evident that the symptoms of allergy-related cough are not confined to a particular "season" but can persist for many months and coincide with viral diseases,” Dr. Alex added. Longer allergy seasons mean longer coughsChanging rainfall patterns and rising temperatures are extending pollen seasons across many parts of India. Meanwhile, monsoon rains and flooding create damp indoor environments that encourage mould growth. High humidity also promotes dust mites, another common allergy trigger. These allergens keep the airways inflamed, meaning an allergy-related cough may no longer be limited to a single season. Instead, symptoms can persist for weeks or even months and may overlap with viral infections. Exposure to ozone triggers persistent coughing, worsen asthma symptoms, and increase breathing difficultiesIndoor air can be just as harmfulExperts also highlight the importance of indoor air quality. Dr. Pragathi Rao, Consultant, Department of Respiratory Medicine, Ramaiah Memorial Hospital, says many people close their windows when pollution levels rise, or weather becomes unpredictable. Unfortunately, this can trap cooking fumes, dust, mould spores, and other indoor pollutants inside the home. “Poor ventilation allows these irritants to accumulate, increasing the risk of chronic cough and breathing problems, especially among children, older adults, and people with asthma or allergies,” she said. Doctors say children, older adults, smokers, those with asthma, individuals with COPD, patients with heart disease, and those prone to seasonal allergies are the worst affected. One such example is Yash Pal, a 75-year-old resident of New Delhi, who recently developed severe asthma after experiencing persistent wheezing and breathlessness. “My doctors said worsening pollution and changing weather significantly aggravated my condition and have advised me to leave the city, but where am I supposed to go?” he said. Yash is not the only one. An estimated 91 per cent of those living in cities breathe polluted air that exceeds safe limits set by the standards set by the World Health Organisation. Globally, air pollution causes a whopping 4. 2 million premature deaths each year – and makes millions visit emergency rooms for asthma, bronchitis, and lung infections. How to protect your lungsRespiratory experts recommend several practical steps to reduce exposure and protect lung health:Check the daily Air Quality Index (AQI) before going outdoors. Avoid outdoor exercise on days with high pollution levels. Wear a well-fitted N95 mask during severe pollution or dust storms. Keep homes clean, dry, and well-ventilated to prevent mould growth. Stay well hydrated to soothe irritated airways. Use steam inhalation if recommended by your doctor. Avoid self-medicating with cough syrups for prolonged symptoms. A cough should never be ignored if it lasts more than three weeks, or if it is accompanied by fever, breathlessness, chest pain, unexplained weight loss, or coughing up blood. “These symptoms may indicate underlying conditions such as post-viral airway inflammation, allergic bronchitis, asthma, pneumonia, or other lung diseases that require medical evaluation,” said Dr. Arjun. It is important to monitori air quality, reducing exposure to pollutants, and seeking timely medical care for lingering symptoms can help protect respiratory healthClimate change is reshaping more than the environment - it is also changing how respiratory illnesses develop and recover. Rising temperatures, worsening air pollution, prolonged pollen seasons, and increasing humidity are creating conditions that keep the airways inflamed for longer, making persistent coughs more common. Experts stress that monitoring air quality, reducing exposure to pollutants, and seeking timely medical care for lingering symptoms can help protect respiratory health in an increasingly unpredictable climate.