Written By: Muskan Gupta | Updated : August 1, 2025 10:43 AM IST
Every year on August 1, the world unites to observe World Lung Cancer Day, a crucial moment to raise awareness about one of the most common and deadly cancers. Lung cancer is the biggest cause of cancer-related deaths worldwide, with millions of new cases identified each year. Early detection, however, is the major factor in increasing the survival rates related to treatment and research. It is crucial to know the early warning signs that can make all the difference in timely diagnosis and effective treatment.
This World Lung Cancer Day 2025, it's important to understand and stay alert to these 7 early signs of lung cancer that should never be ignored:
A cough of more than three weeks is an early symptom of lung cancer. This kind of cough is usually deep, continuous, and usually dry in contrast to a cold or an allergy-related cough. But, in case you are having a cough that lasts over time, and particularly when it is getting worse as time goes by, it is important to make an appointment with a health practitioner to get it further checked.
Coughing up blood or rust-coloured sputum is considered to be one of the more alarming symptoms of lung cancer. Although the symptom might as well be attributed to other ailments such as infections and bronchitis, it serves as a red flag that should get immediate medical attention. You should never ignore it, even in the case that it occurs once.
Another early sign of a lung problem that can be noticed is your simple stamina may be getting affected. If you notice yourself getting easily winded when engaging in regular physical activities, such as going up the stairs or walking a certain distance, then there are chances that there is a lung issue. Airways may be blocked by lung tumours or cause accumulation of fluids around the lungs, making the person have difficulty in breathing.
Continuously painful chest that worsens when coughing or laughing or when breathing deep becomes something more than a strain on the muscles. Chest pain that occurs as a result of lung cancer may be persistent, and it may also extend to the shoulders or back. In case you have unexplainable and chronic discomfort, consult your doctor.
Changes in voice can happen when a tumour is putting pressure on the recurrent laryngeal nerve that is in charge of the control of the vocal cords. When your voice becomes hoarse or raspy without any noticeable reason like a cold or flu and it does not produce any change within 2 weeks, it might indicate that you have lung cancer.
Weight loss is unintentional and is a symptomatic feature of most of the cancers, which include lung cancer. Losing weight with no modification to diet or exercise regimen can be a sign that your body is responding to the existence of cancer cells or increased energy requirements of a tumour.
A warning sign could be frequent cases of pneumonia or bronchitis, particularly in the same area of the lung. Blockages of airways can occur because of tumours, which makes infection more likely to develop. Recurring infections require thorough investigation, particularly in individuals at risk of getting them, such as smokers or those with a family cancer history.
Smokers do not have the only lung cancer problem, but they are exposed to it mostly because it is their main cause. Individuals who are occupationally exposed to secondhand cigarette smoke or air pollution, as well as those exposed to radon gas or asbestos or people who have a genetic tendency, are also encumbered. There is a growing incidence in the non-smoking younger generation, especially the females.
Lung cancer is much more treatable when it is caught at its early stages. Unfortunately, this is because its early symptoms are very subtle, thus leading to many people being diagnosed at later stages. Routine screening, particularly in high-risk populations, as well as awareness among people, is essential in decreasing the fatality.
Smokers, former smokers, and people exposed to secondhand smoke, radon, or certain occupational hazards are at higher risk for developing lung cancer.
Common signs include persistent cough, chest pain, coughing up blood, shortness of breath, fatigue, weight loss, and recurring lung infections.
