Major players in this molecular repair game are the B vitamins, especially B6, B12, B3 and B9 (or folate). This set of vitamins is of utmost importance for the enzymes responsible for the repair of mutations. Another important nutritional addition would be the introduction of antioxidants, substances that can neutralize free radicals, which are very dangerous little molecules causing instant damage to DNA. The more antioxidants we incorporate in your diet the best your chances are that you avoid DNA mutations in the first place. Your best antioxidant shots are glutathione (made of proteins, so eat plenty), Vitamins A, E, C, Carotenoids and Flavonoids.
Emphasis on the above facts Dietician Sheela Seharawat of Diet Clinic says that you can find most of these in fresh, raw fruits and vegetables, fish and organic meat, eggs and dairy. It is very important to follow a diet rich in nutrients because they build a bullet proof defence system against most threats on a cellular and molecular levels.