So what if cancer is triggered by the inner environment that we humans have created Cancer must begin somewhere but where Yes if someone consumes large quantities of cancercausing agents then it is likely that he or she will develop the disease

Please fix the punctuation.
"So what if cancer is triggered by the inner environment that we humans have created? Cancer must begin somewhere, but where? Yes, if someone consumes large quantities of cancer-causing agents, then it is likely that he or she will develop the disease.