Among the various nutritional deficiencies addressed by the Integrated Child Development Services (ICDS) scheme in India, which is the most common micronutrient deficiency affecting children under 6 years of age?

Explanation

## Micronutrient Deficiencies in ICDS Target Population **Key Point:** Iron deficiency anemia (IDA) is the most prevalent micronutrient deficiency in children under 6 years in India, affecting approximately 50–70% of this age group, making it a primary focus of ICDS interventions. ### Epidemiology of Micronutrient Deficiencies in India | Deficiency | Prevalence in <6 years | ICDS Priority | Key Manifestation | |---|---|---|---| | **Iron deficiency anemia** | 50–70% | Highest | Microcytic hypochromic anemia, developmental delay | | Vitamin A deficiency | 4–8% | High (preventable blindness) | Night blindness, corneal scarring | | Iodine deficiency disorder | 5–10% (regional variation) | High (endemic areas) | Goiter, cretinism, intellectual disability | | Vitamin B12 deficiency | <5% | Lower | Megaloblastic anemia, neurological signs | **High-Yield:** ICDS prioritizes iron supplementation through: - Weekly iron-folic acid (IFA) tablets for children 6 months–6 years - Fortified food items (wheat, rice, salt) - Dietary counseling for iron-rich foods (meat, leafy greens, fortified cereals) ### Why Iron Deficiency is Most Common 1. **Dietary factors:** Low bioavailable iron intake in vegetarian-dominant populations; poor complementary feeding practices 2. **Biological factors:** Rapid growth during infancy and early childhood increases iron demands; inadequate maternal iron stores at birth 3. **Infection burden:** Parasitic infections (hookworm, roundworm) increase iron losses; frequent infections reduce absorption 4. **Socioeconomic factors:** Poverty, food insecurity, and limited access to animal-source foods **Clinical Pearl:** IDA in early childhood is associated with irreversible cognitive and motor developmental delays; this is why ICDS emphasizes early detection and supplementation. ### ICDS Intervention Strategy for IDA - **Supplementation:** Weekly IFA tablets (12.5 mg elemental iron + 50 μg folic acid) for 52 weeks/year - **Fortification:** Fortified wheat flour, rice, and salt at production level - **Dietary diversification:** Promotion of locally available iron-rich foods - **Deworming:** Biannual albendazole to reduce parasitic iron losses - **Screening:** Hemoglobin estimation at ICDS centers to identify severe anemia [cite:Park 26e Ch 8]