I was collecting a list of  research articles for further study that involved smoking and B vitamin deficiencies, especially, the B6’s, folates (B9), and cobalamins (B12). This is the list so far, which I figured I would share so that in case it is of value to others.

• Chronic cigarette smoking is associated with diminished folate status, altered folate form distribution, and increased genetic damage in the buccal mucosa of healthy adults.
• Smoking and plasma homocysteine.
• Smoking status in relation to serum folate and dietary vitamin intake.
• Local and systemic effects of cigarette smoking on folate and vitamin B-12.
• Effects of smoking on metabolism and excretion of vitamin B12.
• Smoking in Pregnancy and Vitamin B12 Metabolism
• Localized deficiencies of folic acid in aerodigestive tissues.
• Cigarette smoking, intracellular vitamin deficiency, and occurrence of micronuclei in epithelial cells of the buccal mucosa.
• Effect of smoking on folate levels in buccal mucosal cells.
• Intake and blood concentrations of folate and their association with health-related behaviors in Korean college students.
• Influence of smoking on folate intake and blood folate concentrations in a group of elderly Spanish men.
• Role of vitamins B6, B12 and folic acid on hyperhomocysteinemia in a Pakistani population of patients with acute myocardial infarction.
• Relationship of tobacco smoking with serum vitamin B12, folic acid and haematological indices in healthy adults.
• Relationship between smoking and folic acid, vitamin B12 and some haematological variables in patients with chronic periodontal disease.
• Effect of smoking on folic acid and vitamin B12 after nonsurgical periodontal intervention.
• [Hiperhomocysteinemia in active and passive smokers and the levels of folate and vitamin B6 in plasma].
• [Smoking influence on the level of homocysteine and 5-methyltetrahydrofolic acid in active and non smokers].