Which of the following is the most essential nutrient for a woman during her initial stages of pregnancy to prevent birth defects?

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Which of the following is the most essential nutrient for a woman during her initial stages of pregnancy to prevent birth defects? Answer: Folic acid

Folic acid is crucial during the early stages of pregnancy to prevent neural tube defects in the developing fetus. It supports proper spinal cord and brain development. Women are recommended to take 400–800 micrograms daily before conception and during early pregnancy.

Question context

This question is part of 🧬 Biochemistry within the broader 🧬 Medical Science subject and appears in the SPSC – Sindh Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.