Known to work

Folate deficiency and folic acid supplementation: the prevention of neural-tube defects and congenital heart defects - 2013 Nutrients Journal
Neural tube defects, folic acid and methylation - 2013 Int J Environ Res Public Health
Folic Acid Supplementation and Pregnancy: More Than Just Neural Tube Defect Prevention - 2011 Reviews in Obstetrics and Gynecology
The role of vitamins and minerals in energy metabolism and wellbeing - 2007 The Journal of International Medical Research
Folic acid. Good for brain health - 2007 Mayo Clinic Health Letter

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