Lung Cancer

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smoke, inhaled by non-smokers, increases a person’s chance of acquiring (Beau Halton). Men who smoke increase their chance of dying from about 23 times and women increase their chances 13 times (“ Awareness Campaign,” 3/23/99). However, may also be caused by long term exposure to radon, a naturally present radioactive gas (SIRS, “What is Cancer?”). The residue of burned petroleum and coal can contribute to (Scientific American, “”). The development of seems to be also affected by genes. The gene histidine triad blocks the formation of tumors, so a defective gene could make one more likely to form a tumor (Microsoft, “”).
In the early stages of , symptoms are hard to recognize. Symptoms usually include a persistent cough, coughing up blood, weight loss, chest or shoulder pain, swelling in the face or neck, shortness of breath, and a hoarse voice (Microsoft, “”). Repeated cases of pneumonia, a virus ...

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