Cancer-causing genetic changes can be acquired during individual lifetime, which results errors that occur as cells divide or from exposure to carcinogenic substances which damage DNA, such as certain chemicals in tobacco smoke, and radiation (ultraviolet rays) from the sun.
Carcinogens is referred to as substances which induce mutations in DNA which lead to the development of a cancerous cell.
So many can be carcinogenic such as environmental factors can include a extensive exposures, such as lifestyle factors (nutrition, alcohol use, physical inactivity, etc. Naturally occurring exposures such as ultraviolet light, infectious agents, etc.
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