A 28-year-old primigravida at 16 weeks of gestation attends the antenatal clinic for her first scheduled visit. As per the recommended antenatal care package in India, which is the most common nutritional deficiency screened for during the first trimester?

Explanation

## Most Common Nutritional Deficiency in Indian Pregnancy **Key Point:** Iron deficiency anemia is the most prevalent nutritional deficiency in pregnant Indian women, affecting 50–60% of pregnancies, making it a universal public health concern and a cornerstone of the antenatal care package. ### Epidemiology in India - **Prevalence:** 50–60% of pregnant women in India have anemia (Hb < 11 g/dL in first and third trimesters, < 10.5 g/dL in second trimester). - **Primary cause:** Iron deficiency accounts for ~75% of anemia in pregnancy. - **Risk factors:** Low dietary iron intake, malabsorption, multiparity, short interpregnancy interval. ### Screening Protocol (NRHM / ICMR Guidelines) | Trimester | Hemoglobin Target | Screening Frequency | Intervention | |-----------|-------------------|-------------------|---------------| | First (≤ 12 weeks) | ≥ 11 g/dL | Baseline | Iron supplementation if Hb < 11 | | Second (13–28 weeks) | ≥ 10.5 g/dL | At booking, 28 weeks | Iron + folic acid daily | | Third (≥ 29 weeks) | ≥ 11 g/dL | At 32 weeks | Continue supplementation | **High-Yield:** Universal iron supplementation (60 mg elemental iron + 500 µg folic acid daily) is recommended for ALL pregnant women in India, regardless of hemoglobin status, to prevent maternal anemia and reduce adverse fetal outcomes (preterm birth, IUGR, perinatal mortality). ### Why Iron Deficiency Dominates 1. **Increased iron demand:** Pregnancy increases blood volume by 30–50%; fetus requires ~300 mg iron for hemoglobin synthesis. 2. **Poor dietary intake:** Vegetarian diet, low bioavailability of plant-based iron (non-heme iron). 3. **Malabsorption:** Celiac disease, H. pylori infection, post-gastrectomy. 4. **Cumulative depletion:** Multiparity without adequate interpregnancy interval. **Clinical Pearl:** Even mild anemia in pregnancy increases risk of preterm labor, low birth weight, and maternal postpartum hemorrhage complications. ### Differentiation from Other Deficiencies - **Vitamin B12 deficiency:** Less common in India unless strict vegan diet; screened selectively. - **Iodine deficiency:** Screened via urinary iodine; endemic in certain regions but not universal. - **Vitamin A deficiency:** Screened in high-risk populations; not part of universal first-trimester screening. **Mnemonic:** **IRON FIRST** — Iron is screened First, most Relevant, Omnipresent in Indian pregnancies, Needs universal supplementation.