How long does it take to get lung cancer from smoking one pack of cigarettes per day?

Smoking one pack of cigarettes per day may lead to lung cancer within a period ranging from 5 to 10 years, but this varies depending on individual circumstances. Details are as follows:
Generally, there is no specific data indicating exactly how long it takes for someone who smokes a pack a day to develop lung cancer. However, the longer and more heavily a person smokes, the higher their risk of developing lung cancer. This is because cigarettes contain nicotine, a toxic and carcinogenic substance. If there is also a family history of lung cancer, the risk increases further, and the disease may develop within 5 to 10 years. In contrast, individuals without such a family history might not develop lung cancer at all. Therefore, the outcome largely depends on personal factors. For patients already diagnosed with lung cancer, the specific treatment plan should be determined based on the tumor's pathological type and stage. For early-stage non-small cell lung cancer, surgery is typically the primary treatment, while advanced stages are mainly managed with chemotherapy and radiation therapy.
It is recommended that individuals adopt healthy lifestyle habits in daily life: avoid staying up late, and make every effort to quit smoking. Diet-wise, consume more fresh fruits and vegetables, and reduce intake of spicy, stimulating, and greasy foods. Regular physical exercise, such as running or swimming, can also help strengthen the body's immune system. If any symptoms arise, individuals should seek medical attention promptly.