Lahore: Cancer is defined as uncontrolled growth of normal cells or excessive growth of abnormal cells, cancers arise from genetic or acquired mutations, mutations are abnormal changes in normal genes, chronic tissue inflammation, irritation, can induce the formation of cancer cells, once cancer cells are formed their growth and spread cannot be stopped.
Risk factors for cancer are genetic or inheritance, environmental toxins, artificial food preservatives and chemicals, pesticides spray of crops, contamination of water, soil and food resources by natural carcinogenic substances, chronic tissue injury or irritation, autoimmune disorders and immune compromised states. Smoking, tobacco is common risk factors for lung cancers.
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