Welcome to our comprehensive guide on Oncology. In this article, we delve into How Smoking Causes Lung Cancer, exploring the latest advancements and essential information.
Cigarette smoke contains over 7,000 chemicals, at least 70 of which are known carcinogens (cancer-causing agents). When inhaled, these chemicals enter the lungs and cause immediate damage to the DNA of the lung cells.
Yes, initially the body can repair the DNA damage. However, with repeated exposure over time, the repair mechanisms become overwhelmed, and the cells begin to behave abnormally and grow uncontrollably, forming a tumor.
Yes. While smoking is the leading cause (responsible for about 80-90% of lung cancer deaths), non-smokers can develop lung cancer due to factors like secondhand smoke, radon exposure, asbestos, or genetic mutations.