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Nutritional Deficiency Disorders in India

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1. Protein-Energy Malnutrition (PEM)

• ~80% of cases are mild to moderate; severe cases account for 1-2% of preschool children
• Marasmus (calorie deficiency) is more common than Kwashiorkor (protein deficiency) in India
• 27% of children in low-income groups show stunting (low height-for-age)
• 17% show wasting (low weight-for-height)
• PEM is an underlying cause in 30% of deaths in children under 5
• The problem exists in all states, with higher rates in rural, low-income populations

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2. Nutritional Anaemia (Iron Deficiency Anaemia)

• 53.1% of women (NFHS-4) are anaemic; 53.7% urban, 54.3% rural
• 58.4% of children aged 6-59 months are anaemic (NFHS-4)
• 67.1% of children and 59.1% of adolescent girls are anaemic (NFHS-5)
• 50.3% of pregnant women are anaemic
• 19% of maternal deaths** are attributed to anaemia
• 3 in 4 Indian women have low dietary iron intake

• Iron deficiency (most common)
• Folic acid deficiency (~37% prevalence)
• Vitamin B12 deficiency (~53% prevalence)

1. Decreased iron stores (no other abnormalities)
2. Latent iron deficiency - stores exhausted, serum ferritin low, transferrin saturation <15% (most prevalent stage in India)
3. Overt iron deficiency anaemia - low haemoglobin

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3. Vitamin A Deficiency (VAD) and Xerophthalmia

• Xerophthalmia (nutritional blindness) is the most serious manifestation
• 0.04% of total blindness in India is due to vitamin A deficiency
• Keratomalacia (corneal destruction) is the major cause of nutritional blindness in children aged 1-3 years
• States worst affected: Andhra Pradesh, Tamil Nadu, Karnataka, Bihar, and West Bengal (predominantly rice-eating states; rice lacks carotene)
• North Indian states have relatively fewer cases
• Subclinical VAD is widespread and increases morbidity/mortality from respiratory and GI infections
• 20% of children with VAD are at increased risk of death from common infections

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4. Iodine Deficiency Disorders (IDD)

• Historically endemic in the sub-Himalayan "goitre belt"
• ICMR surveys showed the problem extends far beyond this belt
• 263 out of 324 districts surveyed (in 29 states and all UTs) are endemic (IDD prevalence >10%)
• >71 million people suffer from goitre and other IDD
• ~17% overall prevalence of iodine deficiency (meta-analysis)

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5. Low Birth Weight (LBW)

• ~28% of babies born in India have LBW (<2.5 kg)
• This is a major public health problem linked to maternal PEM and anaemia
• LBW children are at increased risk of PEM, infections, and long-term developmental impairment

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6. Vitamin D Deficiency

• 61% pooled prevalence across all age groups in India (highest among all micronutrient deficiencies)
• Commonly underdiagnosed as symptoms are absent until severe deficiency occurs
• Skeletal complications: rickets (children), osteomalacia (adults), osteoporosis
• Prevalence of 50-94% reported across various age groups in different studies
• 56.3% prevalence in urban elderly

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7. Vitamin B12 Deficiency

• ~53% prevalence in India (one of the highest globally)
• Predominantly affects vegetarians - B12 is found almost exclusively in animal products
• India has one of the world's largest vegetarian populations
• Causes megaloblastic anaemia, peripheral neuropathy, subacute combined degeneration of spinal cord
• Also contributes to nutritional anaemia alongside folate deficiency

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8. Folic Acid Deficiency

• ~37% overall prevalence
• 39% in those aged <18 years; 41% in those >18 years
• Most prevalent (61%) in pregnant women
• Causes megaloblastic anaemia; neural tube defects in neonates (spina bifida, anencephaly)

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9. Lathyrism

• Endemic in parts of Madhya Pradesh, Bihar, Chhattisgarh, Odisha, and Uttar Pradesh
• Neurotoxin: BOAA (beta-oxalylaminoalanine) causes irreversible upper motor neuron damage
• Presents as spastic paraparesis (neurolathyrism) in young adults and children
• Males more affected than females

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10. Endemic Fluorosis

• Endemic in specific parts of India: Rajasthan, Gujarat, Andhra Pradesh, Telangana, Tamil Nadu, Punjab, Haryana
• Dental fluorosis: Mottling/pitting of teeth (most common)
• Skeletal fluorosis: Osteosclerosis, joint pain, deformity
• Non-skeletal fluorosis: Neurological effects

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11. Zinc Deficiency

• Affects growth, immunity, and wound healing
• Widespread in children; contributes to stunting
• Recognized as a significant hidden hunger disorder in India

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Summary Table

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Government Programmes Addressing These Disorders

• POSHAN Abhiyaan - National Nutrition Mission (comprehensive)
• Anemia Mukt Bharat (AMB) - Iron + folic acid supplementation (6x6x6 strategy)
• Iodine Deficiency Disorders Control Programme - Universal iodization of salt
• Vitamin A Supplementation Programme - Periodic megadose for children <5 years
• Mid-Day Meal Scheme / PM POSHAN - School nutrition
• Integrated Child Development Services (ICDS) - For children and mothers

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Conducting a Nutritional Assessment in the Community

Objectives of a Community Nutritional Survey

1. Obtain precise information on the prevalence and geographic distribution of nutritional problems in a given community
2. Identify individuals or population groups "at risk" or in greatest need
3. Define problems so that policies can be formulated
4. Develop a health care programme that meets assessed needs
5. Evaluate the effectiveness of ongoing nutrition programmes

The nutritional status of a community is the sum of the nutritional status of the individuals who form that community.

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Preliminary Planning

• Sampling: It is not necessary to examine every person. A random and representative sample covering all ages, both sexes, and different socio-economic groups is sufficient for valid conclusions.
• Duration: Cross-sectional (one-time snapshot) vs. longitudinal (repeated measures over time)
• Standardization: Measurement techniques and survey instruments must be standardized before fieldwork begins
• Statistical consultation: All surveys should be planned with expert statistical guidance
• Intensive sub-sample: An intensive investigation can be conducted on a sub-sample for deeper analysis

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The 7 Methods of Nutritional Assessment

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1. Clinical Examination

• Hair: Lackluster, dyspigmentation, easy pluckability (PEM/kwashiorkor)
• Face/skin: Pallor, dermatosis, pellagra rash, moon face
• Eyes: Conjunctival pallor, Bitot's spots, corneal xerosis, night blindness (Vit A)
• Mouth: Angular stomatitis (B2), glossitis (B12, niacin), cheilosis, spongy bleeding gums (scurvy)
• Neck: Thyroid enlargement (iodine deficiency)
• Nails: Koilonychia (iron deficiency)
• Limbs: Edema (kwashiorkor), bowing of legs (rickets), calf tenderness (beri-beri)
• Neurological: Absent reflexes (beri-beri/thiamine), dementia (pellagra), tetany (calcium/Mg)
• Musculoskeletal: Wasting, muscle weakness, bossing of skull (rickets)

• Malnutrition cannot be quantified
• Many deficiencies have no physical signs (subclinical)
• Signs lack specificity and are subjective
• To minimize errors, standardized nutrition assessment schedule/forms are used (annexure format)

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2. Anthropometry

• <18.5 = Underweight (chronic energy deficiency)
• 18.5-24.9 = Normal
• ≥25 = Overweight (double burden)

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3. Laboratory and Biochemical Assessment

• Individual nutrient concentrations in body fluids
• Abnormal amounts of metabolites in urine (e.g., urinary iodine after a loading dose)
• Enzyme activity in which the vitamin is a known co-factor

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4. Functional Assessment

• Muscle function test: Grip strength (dynamometry) - sensitive to protein and energy deficiency
• Immune function: Delayed hypersensitivity skin test (total lymphocyte count) - protein malnutrition reduces immune competence
• Cognitive function/psychomotor tests: IQ, developmental scores in children - affected by iodine, iron, zinc deficiency
• Work capacity: Treadmill or ergometer testing - reduced in iron/energy deficiency
• Night blindness testing: Functional indicator of Vitamin A deficiency (dark adaptometry)
• Visual acuity in field surveys

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5. Assessment of Dietary Intake

1. Record all food and drinks consumed
2. Convert quantities to standardized units (grams, ml)
3. Use food composition tables (e.g., IFCT - Indian Food Composition Tables, NIN Hyderabad) to calculate nutrient intake
4. Compare against Recommended Daily Allowances (RDA) - ICMR RDA for India

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6. Vital and Health Statistics

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7. Ecological Studies

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Summary: The ABCDE Framework for Community Nutritional Assessment

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Special Considerations in an Indian Community Survey

• Use ICMR cut-offs and Indian RDAs rather than Western standards
• Vulnerable groups to oversample: children <5 years, pregnant women, lactating mothers, adolescent girls, elderly
• Include MUAC tapes and Salter scales for field anthropometry
• Urinary iodine measured in school-age children (WHO recommends 6-12 year olds as sentinel group for IDD surveys)
• Haemoglobin by HemoCue device for field Hb estimation
• Night blindness history as a proxy for VAD in surveys (simple verbal question)
• Use NFHS/POSHAN Tracker data as secondary data source for comparison
• Coordinate with AWW (Anganwadi Workers) and ASHAs for field data collection

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a) Major Nutritional Problems in India

On a global scale, five principal nutritional deficiency diseases are given highest priority: wasting, stunting, xerophthalmia, nutritional anaemias and endemic goitre. These represent the tip of the "iceberg" of malnutrition; a much larger population is affected by "hidden" malnutrition. - Park's Textbook of Preventive and Social Medicine

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b) Definition of Malnutrition

Standard Definition

"Malnutrition is a pathological state resulting from a relative or absolute deficiency OR excess of one or more essential nutrients." (Jelliffe, 1966; adopted by WHO)

Additional WHO Framing

• Undernutrition (wasting, stunting, underweight, micronutrient deficiencies)
• Overweight and obesity
• Diet-related non-communicable diseases

Malnutrition is a man-made disease. It is a disease of human societies. It begins quite commonly in the womb and ends in the grave. - Park's Textbook

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c) Protein-Energy Malnutrition (PEM)

Definition

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Risk Factors and Causes of PEM

1. Conditioning Influences (Infections)

• Recurrent diarrhoea, dysentery, intestinal parasites (hookworm, roundworm)
• Measles, whooping cough, malaria, tuberculosis - all precipitate and aggravate PEM
• The malnutrition-infection vicious cycle: infection worsens malnutrition, and malnutrition worsens infection outcome
• Children in poor environments may be infected for nearly half of their first 3 years of life

2. Cultural Influences

• Deep-rooted food habits, taboos, and traditions - e.g., withholding protein-rich foods from children/pregnant women
• Food fads and misconceptions about what is suitable for children
• Practice of early weaning or prolonged exclusive breastfeeding without adequate complementary feeding
• Low maternal literacy - strongly correlated with child malnutrition
• Large family size and closely spaced births (birth interval <2 years)
• Gender discrimination - girls often fed last and least

3. Socioeconomic Factors

• Poverty - primary root cause; insufficient purchasing power for food
• Low per capita income and unequal food distribution within the household
• Unemployment and landlessness
• Lack of education - especially maternal education (strongest single predictor)
• Inadequate housing and poor living conditions

4. Food Production and Availability

• Insufficient food production (the "food gap")
• Seasonal food shortages and drought
• Inequitable food distribution - even when food is available nationally, poor families cannot access it
• Poor storage, processing, and transportation leading to food losses

5. Inadequate Health and Other Services

• Lack of antenatal care - maternal malnutrition leads to low birth weight
• Absence of growth monitoring and early detection
• Inadequate breastfeeding support and weaning guidance
• Poor immunization coverage (infections precipitate PEM)
• Inadequate safe water and sanitation (diarrhoea loop)

6. Direct Dietary Causes

• Quantitative insufficiency - inadequate total food intake (calorie gap)
• Qualitative insufficiency - monotonous cereal-based diet, low in protein, vitamins, and minerals
• Poor complementary feeding practices after 6 months
• Low birth weight (born malnourished due to maternal undernutrition)

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Classification of PEM

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1. Wellcome Trust Classification (1970)

The hallmark distinguishing feature is the presence or absence of oedema.

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2. Gomez Classification (1956)

Simple to use; widely used in India; most common classification in Indian community surveys.

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3. Waterlow Classification (1972)

Wasting reflects current (acute) malnutrition; Stunting reflects past/chronic malnutrition.

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4. IAP (Indian Academy of Pediatrics) Classification

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Clinical Features: Marasmus vs Kwashiorkor

Marasmus = predominantly calorie deficiency; Kwashiorkor = predominantly protein deficiency triggered by infection superimposed on an already malnourished child. - Sleisenger & Fordtran

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Prevention and Control Measures to Reduce PEM in India

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A. Dietary and Nutritional Interventions

1. Promotion of breastfeeding - Exclusive breastfeeding for 6 months; continued breastfeeding up to 2 years with complementary foods
2. Complementary feeding education - Timely introduction (6 months), appropriate frequency, quantity, and quality; promotion of locally available protein-rich foods (pulses, eggs, milk)
3. Therapeutic feeding of SAM/MAM - Ready-to-Use Therapeutic Food (RUTF); F-75/F-100 protocols in NRCs (Nutrition Rehabilitation Centres)
4. Supplementary feeding programmes - Mid-day meals, ICDS supplementary nutrition (500 kcal, 12-15 g protein/day for preschool children)

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B. National Programmes (India-Specific)

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C. Health Measures

• Growth monitoring and promotion - Monthly weighing at AWCs; use of Road-to-Health card/growth chart; early detection of faltering growth
• Immunization - Universal immunization breaks the malnutrition-infection cycle
• ORS and zinc for diarrhoea management - Reduces nutritional losses from recurrent diarrhoea
• Deworming - Albendazole twice/year under National Deworming Day for children 1-19 years
• Antenatal care and maternal nutrition - Prevents LBW which is a precursor of PEM
• Treatment of infections promptly to prevent nutritional deterioration

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D. Socioeconomic and Ecological Measures

• Poverty alleviation - MGNREGA, PDS (Public Distribution System) - subsidized cereals + pulses
• Food fortification - Double-fortified salt (iodine + iron), fortified rice in PDS/ICDS
• Maternal education - Girls' education most powerful single investment in child nutrition
• Family planning - Birth spacing >2 years; small family norm reduces per-child food allocation
• Agricultural policies - Food production increase; kitchen gardens (home horticulture) programmes
• Safe water and sanitation (WASH) - Swachh Bharat Mission reduces diarrhoea burden
• Nutrition education and communication (SBCC) - Behaviour change for correct feeding practices, dispelling food taboos

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E. Surveillance and Monitoring

• POSHAN Tracker - Real-time growth monitoring data from AWCs
• NFHS surveys - Periodic national assessment of nutritional status
• Nutritional surveillance - Sentinel site monitoring for early warning of nutritional emergencies

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Several nutritional problems of developing countries can be mitigated by short-term intervention programmes. These alleviate the situation as a temporary measure; the long-term solution lies in socioeconomic development and food and nutrition planning as an integral part of overall development. - Park's Textbook of Preventive and Social Medicine