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World Lung Cancer Day 2026: Are these 5 daily habits putting your lungs at risk?

Small everyday habits can silently increase lung cancer risk. This World Lung Cancer Day 2026, discover five common behaviours that may be harming your lungs.

Written By N. Lothungbeni Humtsoe
Published : July 31, 2026 12:02 PM IST

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Lung Cancer Day

Your home is meant to be the safest place but what if certain habits that you do in your daily routine are actually damaging your lungs without you realizing it? On the eve of World Lung Cancer Day 2026 which falls on August 1 ever year it is crucial to keep in mind that smoking is not the only risk factor. According to research indoor air pollution, secondhand smoke, radon exposure and household toxins can also cause an increased risk over time. Having just a few lifestyle changes can help to keep your lungs protected but not all exposures will cause cancerr. Check out these five everyday behaviours that might be unknowingly raising your risk for lung cancer.

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Secondhand smoke in your home

Even if you don’t smoke regularly breathing in someone else’s cigarette smoke can damage your lungs. The World Health Organization (WHO) estimates that there are thousands of chemicals in secondhand smoke with some dozen of them being known to cause cancer. Children, older people and family members with already existing lung diseases are at increased risk.

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Don't test your home for radon!

Radon is a radioactive, colourless, odourless gas that is found in nature. Leading health organizations state that radon is the second most important cause of lung cancer after smoking. Testing homes in high risk areas is one of the best ways to be preventive but this varies from place to place.

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Cooking in poorly ventilated kitchens

Fine particulate matter and harmful gases are emitted while cooking at high heat without adequate ventilation. Exposure to indoor cooking smoke has been associated with an increased risk of lung cancer particularly among women in the long run. Exposure can be substantially lowered by using exhaust chimney or by improving kitchen ventilation.

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Use strong chemical cleaners on a daily basis

Often using strong cleaning sprays, air fresheners, solvent based products and cleaning sprays releases volatile organic compounds (VOCs) at your indoor space. Experts warn that exposure to some VOCs over long periods of time can damage the respiratory system which is why they suggest using milder products and be sure to provide adequate ventilation if chemical cleaning is necessary.

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Dismissing dampness and mould

Lung cancer is not directly caused by persistent damp walls and mould growth but it can lead to chronic inflammation, aggravate lung diseases and negatively affect lung health. Healthcare professionals recommend repairing water leaks quickly and controlling humidity in the home to improve air quality.