When it comes to respiratory tract tumors, people often begin searching for Lung Cancer Causes and prevention methods only when obvious symptoms appear, such as a persistent cough, shortness of breath, unexplained fatigue, or chest pain. Unfortunately, such symptoms are easily mistaken for a common cold or fatigue, so it's crucial to carefully listen to any signs your body is giving you, whether changes in blood tests or chronic breathing problems, and seek medical attention promptly.