Can we prevent cancers by studying the “scars” that carcinogens leave in our DNA?

Question: Can we prevent cancers by studying the "scars" that carcinogens leave in our DNA?
- Keywords:
  cancer,
  carcinogens,
  dna,
  scar
Asked by soayla to Nicholas on 15 Mar 2017.
- Nicholas Younger answered on 15 Mar 2017:
  
  We can’t prevent them, but we can understand them better and how to treat them.

Question: Can we prevent cancers by studying the "scars" that carcinogens leave in our DNA?