Smokers excretion Vitamin

In another series of experiments, it was shown that normal smokers excrete larger amounts of vitamin B12 in the urine than non-smokers, probably because cyanocobalamin has a greater reneJ clearance than hydroxocobalamin [51]. 

Prieme, H Loft, S., Nyyssonen, K Salonen, J. T., and Poulsen, H. F. (1997). Mo effect of supplemental Inn with vitamin E, ascorbic acid, or coenzyme QIO on oxidative DNA damaj>e estimated by 8-oxy-7,8-dihydTQ-2-deoxyguanosinc excretion in smokers. Am. I. Clin. iVittr, 65, 503- 507,... 

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