Vitamin B12 levels and abnormal pap smears……
“This study aimed to explore the risk of abnormal cervical cytology in relation to serum folate and vitamin B12 levels……”
“A case-control study was carried out among women attending the gynecology clinic for cervical cytology screening.”

“103 cases with abnormal cervical cytology of the cervix and 175 controls with cytological normal smears……”

“The mean vitamin B12 level of cases was significantly lower than that of controls.”
“The results of this study suggest that lower vitamin B12 levels are associated with abnormal cervical cytology.”
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H.Yüksel, et al.
Folate and vitamin B12 levels in abnormal pap smears: a case control study.
Europpean Journal Of Gynaecological Oncology — 2007