Determinants of neural tube defect (NTD)-protective circulating concentrations of folate in women of child-bearing age in the US post-folic acid fortification era

• Published in: Nutrition research and practice 2013, 7(4), , pp.315-325
• Main Authors: Piyathilake, C., University Blvd, Birmingham, USA, Eom, S.Y., Chungbuk National University, Cheongju, Republic of Korea, Hyun, T., Chungbuk National University, Cheongju, Republic of Korea, Badiga, S., University Blvd, Birmingham, USA, Robinson, c., University Blvd, Birmingham, USA, Rahman, N., University Blvd, Birmingham, USA, Kim, H., Chungbuk National University, Cheongju, Republic of Korea, Johanning, G.L., University of Texas MD Anderson Cancer Center, Bastrop, USA
• Format: Article
• Language: English
• Subjects: ACIDE; ACIDOS; ACIDS; Folate,neural tube defect,chid-bearing age; Original Research; 생활과학
• ISSN: 1976-1457; 2005-6168
• DOI: 10.4162/nrp.2013.7.4.315

We evaluated folate status of child-bearing age women diagnosed with abnormal pap smear in the US post-folic acid (FA) fortification era and assessed the determinants of NTD-protective and supra-physiologic (SP) concentrations of folate. The distribution of 843 women according to NTD-protective concentrations of RBC folate, plasma folate and SP concentrations of plasma folate were tested in relation to demographic and life-style factors. Logistic regression models specified NTD-protective concentrations of RBC and plasma folate or SP concentrations of plasma folate as dependent variables and demographic and life-style factors as independent predictors of interest. More than 82% reached NTD-protective concentrations of RBC and plasma folate and ~30% reached SP concentrations of plasma folate. FA supplement use was associated with having SP concentrations of plasma folate rather than NTD-protective concentrations of folate. African American (AA) women and smokers were significantly less likely to achieve NTD-protective concentrations of RBC and plasma folate. A large majority of women reached NTD-protective concentrations of folate with the current level of FA fortification without using supplementary FA. Therefore, the remaining disparities in AA women and in smokers should be addressed by targeted individual improvements in folate intake.