A member asked:

I am curious if cancer isn't just diet based then where does it come from?

A doctor has provided 1 answer

Unknown: Good question, but we do not fully understand the causes of cancer. However, it is probably due to a combination of factors, including: genetics (family history), environmental exposures (tobacco, radiation), diet (as you said), and we are even beginning to understand that there are certain infections that can increase cancer risk (viral).

Answered 5/6/2016

4.9k views

Thank

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