Folic Acid in Pregnancy: Critical for Neural Tube & Red Cell Formation

Folic acid (vitamin B₉) is indispensable in early pregnancy:

Neural Tube Defect (NTD) Prevention

400–800 mcg/day starting ≥1 month before conception through week 12 reduces spina bifida/anencephaly risk by 50–70%.

Red Blood Cell Production

Maternal blood volume expands 50%; folate drives erythropoiesis. Deficiency → megaloblastic anemia → fatigue, weakness.

DNA Synthesis & Cell Division

Rapid fetal growth requires massive nucleotide synthesis; folate provides 1-carbon units.

Sources & Supplementation

• Food: dark leafy greens, legumes, fortified grains, citrus, liver.
• Supplement: 400–800 mcg folic acid (more bioavailable than food folate).
• High-risk (prior NTD, antifolate meds, malabsorption): 4 mg/day per guideline.

Consult provider for personalized dose.