A member asked:

Can you tell me how can cancer like leukemia and breast cancer appears or caused?

A doctor has provided 1 answer

No one answer: Cancer is many different diseases and has many different causes and many unknowns. The general factors in cancer are heredity/genetics, use of tobacco, alcohol, radiation, chemicals, obesity, lack of exercise and some infections. See this site for more info. http://www.cancer.org/cancer/cancercauses/.

Answered 3/12/2020

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