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by giantg2 830 days ago
Not all health affects are reversible. Some reversals can be quite evident for acute symptoms, like arsenic. IQ reduction from lead appears to be permenant. Using your example of lung cancer... no, the cancer would not go into remission if established. However, there are studies showing lung cancer risk go down for smokers after they stop smoking, and generally the risk continues to decrease the more time has passed since they last smoked.