What is the safe upper intake level of folic acid for the nervous system? Implications for folic acid fortification policies

Folate and prevention of neural tube defects

(2014) R. Clarke et al.   BMJ-British Medical Journal

Population red blood cell folate concentrations for prevention of neural tube defects: bayesian model

(2014) K. S. Crider et al.   BMJ-British Medical Journal

Low maternal vitamin B12is a risk factor for neural tube defects: a meta-analysis

(2012) Zhi-Ping Wang et al.   Journal of Maternal-Fetal & Neonatal Medicine

Vitamin B-12 and Folate Status in Relation to Decline in Scores on the Mini-Mental State Examination in the Framingham Heart Study

(2012) Martha Savaria Morris et al.   JOURNAL OF THE AMERICAN GERIATRICS SOCIETY

Folic Acid Food Fortification—Its History, Effect, Concerns, and Future Directions

(2011) Krista S. Crider et al.   Nutrients

Metabolic evidence of vitamin B-12 deficiency, including high homocysteine and methylmalonic acid and low holotranscobalamin, is more pronounced in older adults with elevated plasma folate

(2009) Joshua W Miller et al.   AMERICAN JOURNAL OF CLINICAL NUTRITION

Folate–vitamin B-12 interaction in relation to cognitive impairment, anemia, and biochemical indicators of vitamin B-12 deficiency

(2009) Jacob Selhub et al.   AMERICAN JOURNAL OF CLINICAL NUTRITION

Folic acid source, usual intake, and folate and vitamin B-12 status in US adults: National Health and Nutrition Examination Survey (NHANES) 2003–2006

(2009) Quanhe Yang et al.   AMERICAN JOURNAL OF CLINICAL NUTRITION

Maternal Vitamin B12 Status and Risk of Neural Tube Defects in a Population With High Neural Tube Defect Prevalence and No Folic Acid Fortification

(2009) A. M. Molloy et al.   PEDIATRICS