What are the causes of cancer .
Answers
Answer:
Explanation:
caused by genetic changes leading to uncontrolled cell growth and tumor formation. The basic cause of sporadic cancers is DNA damage and genomic instability.
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Cancer causing factors related to work and living environments include:
asbestos fibres
tar and pitch
polynuclear hydrocarbons (e.g. benzopyrene)
Some metal compounds
Some plastic chemicals (e.g. Vinyl chloride)
Bacteria and viruses can cause cancer:
Helicobacter pylori (H. pylori, which causes gastritis)
HBV, HCV (hepatitis viruses that cause hepatitis)
HPV (human papilloma virus, papilloma virus, which causes changes eg. Cervical cells)
EBV (Epstein-Barr virus, the herpes virus that causes inflammation of the throat lymphoid)
Radiation can cause cancer:
ionising radiation (e.g. X-ray radiation, soil radon)
non-ionised radiation (the sun’s ultraviolet radiation)
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