Anaemia Burden: DFS and Multifactorial Challenges

Why in the News?

An article has raised concerns about double-fortified salt (DFS) as a standalone solution to India's anaemia burden, citing multifactorial causes and potential risks of iron overload.

Key Highlights

• NFHS-5 found anaemia in over half of women and two-thirds of young children.

• Indians consume twice the WHO-recommended daily salt intake, conflicting with DFS's sodium-reduction goals.

• Iron overload risks include oxidative stress, gut flora changes, and increased hospitalisations in malaria-endemic areas.

• DFS contains non-haem iron, whose absorption depends on dietary composition and meal timing.

• India's revised 7x7x7 anaemia strategy includes measures beyond iron supplementation but faces compliance challenges.

• Peru and Vietnam reduced anaemia through targeted, multi-pronged approaches combining fortification, supplementation, and public-health measures.

Know the Basics

• Anaemia: A condition where the blood lacks enough healthy red blood cells or haemoglobin to carry adequate oxygen.

• Double-fortified salt (DFS): Salt fortified with both iodine and iron to address deficiencies.

• Non-communicable diseases (NCDs): Chronic diseases not caused by infections, such as hypertension and diabetes.

• Hepcidin: A hormone that regulates iron absorption and blocks uptake during infection or inflammation.

Detailed Analysis

DFS May Conflict With Salt Reduction Goals

• India's NCD action plan targets a 30% reduction in salt intake, but DFS requires regular salt consumption for iron delivery.

• High salt intake is linked to hypertension, affecting one in three adults in India.

Iron Overload Risks and Vulnerable Groups

• The body cannot excrete excess iron, leading to oxidative stress and risks for beta-thalassaemia and sickle cell disease patients.

• Screening for these conditions is impractical, as the PDS reaches 800 million people.

Limitations of Non-Haem Iron in DFS

• Non-haem iron absorption is reduced by phytates, polyphenols, and calcium in common Indian diets.

• Unabsorbed iron may promote harmful microbes in the colon, especially in infection-prone areas with high hepcidin levels.

Anaemia's Multifactorial Causes

• Iron deficiency accounts for only half of global anaemia cases; other causes include vitamin B12 deficiency, infections, and haemoglobinopathies.

• India's Comprehensive National Nutrition Survey (2016-18) found iron deficiency explained only part of anaemia among children and adolescents.

Lessons From Global Success Stories

• Peru reduced child anaemia through political prioritisation, health tracking, cash transfers, and combined interventions.

• Vietnam's success combined iron-fortified fish sauce with deworming, dietary diversity, and rising incomes.

Significance for India

• India's anaemia burden highlights the need for comprehensive public-health strategies addressing nutritional, infectious, and socioeconomic factors.

• DFS rollout must be carefully monitored to avoid iron overload and ensure efficacy in diverse dietary contexts.

• UPSC could test this under GS-II or GS-III, focusing on health policies, nutrition, or NCD management.

• Global examples like Peru and Vietnam offer insights for India's anaemia strategy.

Challenges

• DFS conflicts with India's salt-reduction targets under the NCD action plan.

• Iron overload risks are heightened for vulnerable groups like thalassaemia patients, especially in tribal areas.

• Non-haem iron absorption is limited by common Indian dietary components like cereals, tea, and milk.

• Universal DFS rollout risks iron stacking across multiple programmes without adequate monitoring.

Way Forward

• Conduct district-level DFS pilots to monitor efficacy, cumulative iron exposure, and risks in vulnerable populations.

• Target DFS to specific groups rather than universal distribution, using better-absorbed iron forms.

• Expand diagnostics for ferritin, vitamin B12, and inflammation markers to identify anaemia causes accurately.

• Integrate fortification with deworming, sanitation, malaria control, and affordable access to diverse nutritious foods.