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Lung cancer is the leading cause of cancer death in Wales and across the UK. Smoking remains the biggest cause, yet it’s also the most preventable. Knowing how smoking increases your risk can help you make informed decisions for a healthier future.
Lung cancer occurs when abnormal cells in the lungs grow uncontrollably, forming tumours that can spread to other parts of the body. There are two main types:
Non-Small Cell Lung Cancer (NSCLC): The most common type, accounting for about 85% of cases.
Small Cell Lung Cancer (SCLC): A more aggressive type, often linked to heavy smoking.
Early diagnosis is crucial, but lung cancer often develops without noticeable symptoms in its initial stages.
Common symptoms include:
Persistent cough lasting more than three weeks
Coughing up blood
Chest pain or discomfort
Unexplained weight loss
Shortness of breath or wheezing
Persistent chest infections
Fatigue or loss of energy
If you or someone you know is experiencing these symptoms, it’s essential to seek medical advice promptly.
Smoking is responsible for around 7 in 10 lung cancer cases in the UK. Here’s how it harms your lungs:
Toxic Chemicals: Cigarette smoke contains over 5,000 chemicals, including 70 known carcinogens like benzene, arsenic, and formaldehyde.
Cell Damage: These chemicals damage the cells in your lungs, causing genetic mutations that can lead to cancer.
Ongoing Exposure: Each cigarette further damages lung tissue, increasing risk with every puff.
Weakened Defence: Smoking weakens your lungs’ ability to repair themselves, making it easier for tumours to grow.
The most effective way to lower your risk is to stop smoking. Even if you’ve smoked for years, quitting reduces your risk of developing lung cancer significantly over time.Â
When you quit:
Support for quitting smoking, including free services and expert advice.
Your support helps us create impactful campaigns and provide free resources to schools and communities across Wales. Every donation brings us closer to a smoke-free generation.
