Beyond Iron Deficiency: Understanding the Multi-Dimensional Challenge of Anaemia in India

Context

Anaemia continues to be a major public health concern in India, disproportionately affecting women, children and adolescent girls. Although iron deficiency is widely recognised as its primary cause, growing evidence highlights the role of multiple nutritional deficiencies, infections, genetic conditions and socio-economic inequalities. This underscores the need to move beyond iron supplementation towards a comprehensive approach to anaemia prevention and management.

What is Anaemia?

Anaemia is a medical condition in which the concentration of haemoglobin or the number of healthy red blood cells falls below normal levels, reducing the blood’s ability to transport adequate oxygen to body tissues.

An important distinction: Anaemia is not synonymous with iron deficiency. Iron deficiency is one of its major causes, but the condition can also arise from inadequate intake of other micronutrients, chronic infections, inflammation, blood loss and inherited blood disorders.

What are the Major Causes of Anaemia?

1. Multiple Micronutrient Deficiencies

• Vitamin B12 and folate (Vitamin B9) are essential for the production and proper maturation of red blood cells.
• Limited consumption of animal-based foods can increase the risk of Vitamin B12 deficiency, particularly among populations with predominantly plant-based diets.
• Vitamin C improves the absorption of non-haem iron obtained from plant-based foods.
• Deficiencies in Vitamin A and other nutrients can also contribute to anaemia.

2. Infections and Chronic Inflammation

• Parasitic worm infections, malaria and recurrent gastrointestinal illnesses can cause blood loss and interfere with nutrient absorption.
• Chronic inflammation increases the production of hepcidin, a hormone that restricts iron absorption from the intestine and its availability for red blood cell production.
• Consequently, individuals may develop anaemia even when their bodies contain sufficient iron reserves.

3. Socio-Economic and Environmental Factors

• Inadequate access to safe drinking water, sanitation and hygiene increases exposure to infections that impair nutritional absorption.
• Poverty, food insecurity and limited dietary diversity restrict access to essential nutrients.
• Early marriage, adolescent pregnancy, repeated pregnancies and gender-based nutritional inequalities increase the vulnerability of women and girls.

4. Genetic Blood Disorders

• Haemoglobin disorders such as thalassaemia and sickle cell disease can cause chronic anaemia.
• These conditions are particularly relevant in certain tribal and geographically concentrated populations.
• Such cases cannot be effectively managed through iron supplementation alone unless an accompanying iron deficiency is established.

Why is an Iron-Centric Approach Insufficient?

Dimension	Conventional Iron-Centric Approach	Comprehensive Approach
Intervention	Iron-Folic Acid supplementation and iron fortification	Dietary diversity and appropriate micronutrient supplementation
Diagnosis	Primarily haemoglobin measurement	Additional tests for iron status, B12 deficiency, inflammation and genetic disorders
Infection control	Limited integration	Deworming, malaria prevention and infection management
Environmental factors	Limited attention to sanitation	Safe water, sanitation and hygiene interventions
Long-term outcomes	Dependence on supplementation	Sustainable nutritional security and preventive healthcare

What are the Limitations of Iron-Only Programmes?

1. Inappropriate Supplementation

• Providing iron without identifying the underlying cause may result in unnecessary supplementation.
• Excessive iron intake can cause gastrointestinal complications and, in certain conditions, contribute to iron accumulation.
• Individuals with genetic haemoglobin disorders may require specialised assessment rather than routine iron treatment.

2. Inadequate Diagnostic Capacity

• Haemoglobin testing identifies anaemia but does not establish its underlying cause.
• Without additional investigations, nutritional deficiencies, chronic inflammation and inherited blood disorders may remain undetected.
• This can lead to inappropriate treatment and delayed recovery.

3. Poor Treatment Adherence

• Iron supplements can cause nausea, constipation and a metallic taste.
• These side effects discourage regular consumption, particularly among adolescent girls and pregnant women.
• Lack of awareness and inadequate follow-up further reduce programme effectiveness.

4. Neglect of Underlying Determinants

• Supplementation alone cannot address poor sanitation, recurrent infections, food insecurity or gender-based nutritional disadvantages.
• Without tackling these factors, anaemia may persist despite repeated supplementation.

What are the Government Initiatives to Address Anaemia?

1. Anaemia Mukt Bharat (AMB)

• Launched under the National Health Mission, the strategy follows a 6×6×6 framework comprising six beneficiary groups, six interventions and six institutional mechanisms.
• Its interventions include iron-folic acid supplementation, periodic deworming, testing and treatment, alongside efforts to improve awareness and nutritional practices.

2. POSHAN Abhiyaan

• Focuses on improving nutritional outcomes among children, adolescent girls, pregnant women and lactating mothers.
• Promotes behavioural change, dietary diversity and convergence among nutrition-related programmes.

3. National Deworming Day

• Conducted twice annually to reduce soil-transmitted helminth infections.
• Provides Albendazole to eligible children and adolescents to reduce worm-related nutritional complications.

Way Forward

1. Promote Dietary Diversity

• Shift the emphasis from dependence on iron tablets towards balanced and nutritious diets.
• Encourage green leafy vegetables, pulses, millets, fruits, citrus foods and protein-rich sources.
• Promote appropriate combinations of iron-rich foods with Vitamin C to improve iron absorption.

2. Strengthen Diagnostic Infrastructure

• Upgrade Primary Health Centres (PHCs) and diagnostic facilities to identify different causes of anaemia.
• Combine haemoglobin testing with appropriate investigations such as serum ferritin, Vitamin B12, folate and inflammatory markers.
• Introduce targeted screening for haemoglobin disorders in high-prevalence communities.

3. Integrate Nutrition with WASH Interventions

• Improve access to safe drinking water, sanitation and hygiene facilities.
• Strengthen deworming, malaria prevention and treatment of recurrent infections.
• Integrate nutrition programmes with public health and sanitation initiatives.

4. Address Gender and Social Inequalities

• Improve nutrition awareness among adolescent girls and women.
• Strengthen maternal healthcare, prevent early pregnancies and ensure adequate nutritional support during pregnancy.
• Improve women’s access to nutritious food and healthcare services.

5. Strengthen Community-Level Implementation

• Involve ASHA workers, Anganwadi centres, schools and local health institutions in identifying vulnerable groups.
• Improve awareness regarding the different causes of anaemia and ensure regular monitoring of treatment outcomes.

Conclusion

India’s anaemia challenge cannot be resolved through iron supplementation alone. Its persistence reflects the interaction of nutritional deficiencies, infections, genetic conditions and socio-economic inequalities. A shift towards cause-specific diagnosis, dietary diversity, infection control and integrated public health interventions is essential to achieve sustainable improvements in nutritional health and human development.

Source : The Hindu