Lung Cancer: Early Signs, Risk Factors & Screening

Dr.Arun Giri, 3 mins read

Lung cancer is one of the most common cancers in the world, and many people do not notice its symptoms in the early stage. It can affect smokers as well as non-smokers, so everyone should know the warning signs. Early detection can save lives because treatment works better when the disease is found soon.
Knowing what causes it, what to look for, and how to check can help us act early.

What is Lung Cancer?

Lung cancer happens when abnormal cells in the lungs grow uncontrollably and form a tumour. These cells can damage healthy lung tissue and may spread to other parts of the body if not treated on time. The lungs help us breathe, so any disease affecting them can impact daily life and overall health.

There are two main types of lung cancer:

1. Non-Small Cell Lung Cancer (NSCLC): It is the most common type.
2. Small Cell Lung Cancer (SCLC): A faster-growing type that often spreads quickly.

Both types of lung cancer need early diagnosis and proper treatment.

Early Signs of Lung Cancer

In the beginning, lung cancer may not cause clear symptoms. Many people mistake early signs for a common cough or chest infection. Some warning signs include:

1. Persistent Cough: A cough that does not go away for more than a few weeks should be checked by a doctor.
2. Coughing Blood: Even a small amount of blood in the cough can be a serious sign and needs immediate medical attention.
3. Chest Pain: Pain in the chest, especially while breathing deeply, coughing, or laughing, may be linked to lung problems.
4. Shortness of Breath: If you feel breathless during normal activities, it may be due to blocked airways or reduced lung function.
5. Unexplained Weight Loss: Sudden weight loss without dieting or exercise should never be ignored.
6. Fatigue: Feeling weak and tired all the time can also be a warning sign.
7. Frequent Chest Infections: Repeated pneumonia or bronchitis can sometimes point to an underlying lung issue.

Risk Factors for Lung Cancer

Some people have a higher chance of developing lung cancer because of certain lifestyle or environmental factors.

1. Smoking: Smoking is the biggest cause of lung cancer. Cigarettes, cigars, and other tobacco products contain harmful chemicals that damage lung tissue.
2. Secondhand Smoke: Breathing smoke from others can also increase risk, especially in homes or workplaces.
3. Air Pollution: Long-term exposure to polluted air may damage the lungs over time.
4. Occupational Exposure: People working around asbestos, diesel fumes, chemicals, or radiation may face a higher risk.
5. Family History: If close family members had lung cancer, the risk may be slightly higher.
6. Previous Lung Disease: People with chronic lung diseases such as COPD or lung fibrosis may be more vulnerable.

Importance of Screening

Screening means checking for disease before symptoms appear. Lung cancer screening can help find cancer early, when treatment is more successful.

Who Should Get Screened?

Doctors may advise screening for people who are heavy smokers or former smokers or aged 50 years or above. Also, people who have a long history of tobacco use or have other strong risk factors.

Common Screening Test

The screening test which is commonly prescribed is a Low-Dose CT Scan (LDCT). It uses low radiation to take detailed images of the lungs and can detect small tumors before symptoms start.

Note: Screening should always be done after medical advice, because not everyone needs it.

How to Reduce the Risk

The following steps can help in lowering the chances of lung cancer:

• Stop smoking and avoid tobacco products
• Stay away from secondhand smoke
• Wear protective gear at risky workplaces
• Exercise regularly
• Eat a healthy diet rich in fruits and vegetables
• Get regular health check-ups
• Discuss screening with a doctor if you are at high risk

Trusted Care at Aakash Healthcare

For expert lung cancer screening, diagnosis, and advanced treatment, you can trust Aakash Healthcare. With experienced specialists, modern diagnostic technology, and patient-focused care, Aakash Healthcare supports patients from early detection to recovery. If you or your loved one have symptoms or risk factors, consult the experts at Aakash Healthcare for timely and reliable care.