Objective Studying the effect of nutritional antioxidants on DNA damage. Method 50 volunteers were assigned at random to the supplement( n=25 ) or placebo( n=25) groups. The supplements of vitamin C, vitamin E and β carotene or placebo were taken continuously. Blood samples were collected at 280 days to seperate lymphocytes and determine DNA damage using a single cell gelelectrophoresis(SCGE). The concentrations of H 2O 2 damaging DNA were 30,100,300μmol/L respectively. Result The result showed...