Critically examine the methodological shift in anaemia estimation adopted for NFHS-6 fact sheets and its implications for nutrition policy.

Q. Critically examine the methodological shift in anaemia estimation adopted for NFHS-6 fact sheets and its implications for nutrition policy. (15 marks, 250-350 words)

NFHS-6 (fieldwork 2023-24), whose fact sheets were released in May 2026, discontinued the survey's own field-based haemoglobin testing; anaemia estimates are instead to be drawn from an ICMR survey using intravenous ("gold standard") haemoglobin testing [1]. The shift is a defensible correction of measurement error, but its timing and design carry real policy costs.

Nature of the shift - Earlier rounds used capillary (finger-prick) blood, long criticised for overestimating anaemia prevalence; NFHS-6 defers to ICMR's venous-blood method [1]. - Fact-sheet indicators were finalised by a Technical Advisory Committee (TAC) under the Government's Data Harmonisation Initiative, with MoSPI, NITI Aayog, RGI, WCD, DEPwD and the Department of Drinking Water & Sanitation represented [1].

Merits - Accuracy: venous sampling is the internationally accepted standard; it removes a known upward bias in prevalence estimates [1]. - Institutional candour: outsourcing to a specialised technical body reflects acceptance of prior methodological limits rather than defence of legacy data [1]. - Harmonisation: cross-ministerial TAC vetting reduces the inconsistency across official datasets that has long troubled India's statistical system [1].

Concerns - Break in comparability: anaemia trends from NFHS-4 and NFHS-5 cannot be read continuously against the new series, weakening trend analysis. - Data gap: the fact sheets themselves carry no anaemia figure, unlike other indicators where NFHS-5 baselines are reported [2]. - Loss of district granularity: NFHS's strength is disaggregated, district-level estimates; a separate survey may not match that spatial depth.

Implications for nutrition policy - Anaemia Mukt Bharat and POSHAN Abhiyaan targets, framed on older baselines, may require recalibration. - Risk of misreading a methodological fall in prevalence as programme success, diluting urgency — even as stunting fell from 38.4% to 29.3% [2].

Better measurement is a precondition for better policy, not a substitute for it. The government should publish a transparent bridging or conversion note linking old and new series, and restore anaemia to NFHS's district-level architecture in future rounds, so that accuracy strengthens — rather than interrupts — India's SDG-2 nutrition commitments.

(~330 words)

Sources: 1. Update on NFHS-6, PIB, Ministry of Health and Family Welfare — ICMR gold-standard intravenous haemoglobin testing replacing NFHS field data; TAC composition and Data Harmonisation Initiative 2. NFHS-6 Reflects India's Accelerated Progress in Maternal and Child Health, PIB — fact-sheet indicators reported against NFHS-4/5 baselines; stunting decline from 38.4% to 29.3%