Updated overview of irradiation: types of ionizing radiation, how they damage tissues, main sources of exposure (natural, medical, fallout), medical uses in diagnosis and cancer therapy, and the unrelated optical illusion also called irradiation.
Lung cancer often causes no early symptoms. Know the common warning signs - persistent cough, blood in sputum, shortness of breath, recurrent infections - and the steps to lower risk: quit smoking, avoid secondhand smoke, test for radon, and consider annual low-dose CT screening if eligible.
Persistent cough, breathlessness, blood in sputum, chest pain, weight loss, and fatigue are common signs of lung cancer. Early evaluation, low-dose CT screening for high-risk people, accurate diagnosis with biopsy, and molecular testing guide modern treatment options including surgery, radiation, chemotherapy, targeted drugs, and immunotherapy.