Abstract
We measured the plasma vitamin C concentrations in 370 smoking and 533 nonsmoking males. In our 11 studies the mean values of smokers were distributed from 0.39 to 0.59mg/100mL, the total mean value being 0.52mg/l00mL. The mean values of nonsmokers were distributed from 0.55 to 0.86mg/100mL, the total mean value being 0.76mg/l00mL. With plasma vitamin C concentrations, the percentages of smokers to nonsmokers were distributed from 57〜84%, the total mean value being 68%. In conclusion, the plasma vitamin C concentrations of smokers are average 68% of those of nonsmokers. Smokers have a vitamin C requirement of approximately 1.5 times greater than that of nonsmokers.
