Context Despite sustained public health campaigns and targeted interventions, anaemia remains one of India's most persistent public health burdens. According to the National Family Health Survey (NFHS-5), over half of Indian women and almost three-fourths of children suffer from anaemia, triggering cognitive deficits, maternal mortality, and long-term economic vulnerability. While the revised Anaemia Mukt Bharat (AMB) strategy operates on a multi-pronged 6x6x6 framework spanning therapeutic iron-folic acid (IFA) supplementation, deworming, and dietary diversification, the preventive potential of Double Fortified Salt (DFS)—salt enriched with both iodine and iron—remains markedly underutilised.
Why Salt Serves as the Ultimate Vehicle for Micronutrient Delivery
Universal Consumption & Predictable Intake:
- Edible common salt is consumed by nearly every household across geographical, income, and rural-urban spectra in regular, predictable quantities.
- It circumvents the severe compliance bottlenecks associated with oral Iron and Folic Acid (IFA) tablets, which frequently suffer from poor adherence due to gastrointestinal discomfort and inconsistent primary healthcare access.
Economic Return and Benefit-Cost Profile:
- Introducing DFS requires an estimated annual investment of only ₹14 to ₹20 per individual.
- Public health economic models document a benefit-cost ratio of 4.2:1, generated primarily by lowering maternal morbidity and reversing chronic productivity deficits across manual and cognitive labor forces.
Technological Stabilization:
- Historical attempts at dual fortification encountered chemical interaction issues where iron compounds oxidised iodine, causing sensory discoloration and rapid nutrient degradation.
- Modern formulations utilize micro-encapsulated ferrous fumarate or encapsulated ferric pyrophosphate, preventing chemical cross-reactions with potassium iodate and preserving shelf life across standard domestic conditions.
Institutional Challenges in Nationwide Scaling
- Uneven PDS Integration: While around 76 million beneficiaries access DFS across safety-net programs in four states, inclusion into the core Targeted Public Distribution System (TPDS)—which reaches over 800 million citizens—remains patchy because decentralized state governments drive retail procurement decisions.
- Central Mandates vs. Ground Enforcement: The Food Safety and Standards Authority of India (FSSAI) has defined comprehensive regulatory standards for DFS, and central guidelines mandate its utilization in PM-POSHAN (Mid-Day Meal) and Mission Poshan 2.0 (ICDS). However, decentralized supply chain verification and laboratory monitoring at the district level are inconsistent.
- Necessary Clinical Guardrails: A nationwide scale-up must align with screening for genetic hemoglobinopathies, such as Thalassemia and Sickle Cell Disease, ensuring that universal iron-fortification programs protect vulnerable groups from secondary iron overload.
Way Forward India's successful Universal Salt Iodisation (USI) campaign—which achieved over 95% household coverage—serves as the administrative precedent. Transitioning DFS from an optional state-level welfare commodity into a federally supported, tied provision under the National Food Security Act (NFSA) can transform India’s nutritional trajectory and help fulfill the goals of Viksit Bharat.
