Also dietary magnesium and other micronutrients are an important factor here: Role of magnesium in genomic stability http://www.sciencedirect.com/science/artic

Also dietary magnesium and other micronutrients are an important factor here: Role of magnesium in genomic stability http://www.sciencedirect.com/science/article/pii/S0027510701000744 http://www.sciencedirect.com/science/article/pii/S0027510701... And most in the U.S. are deficient: 'Magnesium intakes for ~56% of adults in the United States are below the Estimated Average Requirement (EAR), the current measure of micronutrient inadequacy (the RDA is set at 2 standard deviations above the EAR).' This is from a Bruce Ames paper here: http://www.hindawi.com/journals/jna/2010/725071/ http://www.hindawi.com/journals/jna/2010/725071/ The Ames paper is worth the read through. Including this one on magnesium, 'In a study of 4,035 men followed for 18 years, the highest quartile with serum magnesium at baseline compared with the lowest had a 40% decrease in all-cause mortality and cardiovascular disease and a 50% decrease in cancer deaths'. He goes through other micronutrients as well.