Why this chapter matters for UPSC: Nutrition and food security intersect GS3 (agriculture, food processing, government schemes) and GS2 (health, welfare, social justice). Prelims tests specific deficiency diseases, vitamin sources, and government nutrition programmes. Mains demands analysis of India's dual burden of malnutrition — undernutrition AND rising obesity/NCDs. POSHAN Abhiyaan, NFSA 2013, PM POSHAN, Anaemia Mukt Bharat, and FSSAI are core syllabus items.

PART 1 — Quick Reference Tables

Table 1: Macronutrients — Types, Sources, Energy

Nutrient Energy Key Functions Indian Food Sources
Carbohydrates 4 kcal/g Primary energy; brain runs on glucose Rice, wheat, millets, potato, sugar
Proteins 4 kcal/g Build/repair tissues; enzymes, hormones, antibodies Pulses (dal), milk, eggs, meat, soya
Fats 9 kcal/g Concentrated energy; cell membranes; fat-soluble vitamins (A,D,E,K) Ghee, oils, nuts, seeds, fish
Water 0 kcal Transport, temperature regulation, digestion, ~60% of body weight All foods + direct intake
Dietary Fibre 0 kcal Gut health; prevents constipation, diabetes, heart disease Whole grains, legumes, vegetables, fruits

Table 2: Vitamin Deficiency Diseases (High-Frequency Prelims Topic)

Vitamin Deficiency Disease Key Symptom India Relevance
A (Retinol) Night blindness; Xerophthalmia Cannot see in dim light; dry eyes ~330,000 child cases/year; Nat. Vit A Supp. Programme
B1 (Thiamine) Beriberi Nerve damage, heart failure Polished rice staple diets
B3 (Niacin) Pellagra Dermatitis, diarrhoea, dementia (3Ds) Maize-dominant diets
B9 (Folate/Folic Acid) Neural tube defects Spina bifida in newborn Maternal nutrition priority
B12 (Cobalamin) Megaloblastic anaemia; nerve damage Fatigue, neurological issues Vegetarian/vegan diets at risk
C (Ascorbic Acid) Scurvy Gum bleeding, joint pain, slow wound healing British sailors used limes → "limeys"
D (Cholecalciferol) Rickets (children); Osteomalacia/Osteoporosis (adults) Bowed legs; weak bones Paradox: India has high solar UV but 70%+ deficiency
K (Phylloquinone) Bleeding disorder (coagulopathy) Uncontrolled bleeding Neonatal Vit K injection is standard practice

Table 3: India's Key Nutrition Programmes

Programme Full Name Ministry Key Feature
POSHAN Abhiyaan PM's Overarching Scheme for Holistic Nourishment WCD Launched 2018; targets stunting, wasting, underweight, anaemia
PM POSHAN (formerly MDM) Education Mid-Day Meal for school children; 11.8 crore beneficiaries
ICDS Integrated Child Development Services WCD 14 lakh Anganwadis; children 0–6 + pregnant/lactating women
NFSA 2013 National Food Security Act Consumer Affairs 67% population; 5 kg grain/person/month at ₹1–3
Anaemia Mukt Bharat — Health IFA tablets + deworming; targets 6 beneficiary groups
PM Poshan Shakti Nirman Fortification Food Rice, wheat flour, oil fortification

PART 2 — Detailed Notes

1. Nutrients and Their Functions

Key Term

A nutrient is a substance that an organism needs from its environment to survive, grow, and reproduce. Nutrients are divided into:

  • Macronutrients — needed in large amounts: carbohydrates, proteins, fats, water
  • Micronutrients — needed in small (micro/milli gram) amounts: vitamins and minerals
  • Dietary fibre — not digested but essential for gut health

Caloric density matters for policy: Fats provide 9 kcal/g (vs 4 kcal/g for carbs/proteins) — explains why ultra-processed foods (high fat + sugar) drive obesity; why edible oil prices are politically sensitive in India.

Carbohydrates:

  • Simple (sugars — glucose, fructose, sucrose) vs. complex (starch, cellulose)
  • Cellulose is dietary fibre — humans cannot digest it (no cellulase enzyme) but gut bacteria can; essential for bowel regularity
  • Millets (Bajra, Jowar, Ragi) are complex carb staples rich in fibre — government's promotion of millets as part of "Shree Anna" (International Year of Millets 2023) has nutritional + agricultural rationale

Proteins:

  • Made of 20 amino acids; 9 are "essential" (must come from diet; body cannot synthesise)
  • Complete proteins (all 9 essential AAs): eggs, meat, milk, soya
  • Pulse + cereal combination (dal-chawal, rajma-chawal) provides complete protein — traditional Indian diet wisdom
  • Protein deficiency: Kwashiorkor (adequate calories, low protein — swollen belly due to fluid imbalance) and Marasmus (total calorie deficiency — wasted muscle)

2. Vitamins — Classification and Deficiencies

Explainer

Fat-soluble vitamins: A, D, E, K — stored in liver and fat tissue; excess can be toxic (hypervitaminosis) Water-soluble vitamins: B complex (B1, B2, B3, B5, B6, B7, B9, B12) and C — not stored; need daily intake; excreted in urine if excess

India-specific vitamin deficiency paradox:

  • Vitamin D: India receives abundant sunshine yet 70–80% of Indians are Vitamin D deficient (studies by AIIMS, ICMR). Reasons: melanin in darker skin reduces UV absorption; indoor lifestyles; pollution (absorbs UV); vegetarian diet (Vit D mainly in fish, egg yolk). Policy response: food fortification (milk, oil)
  • Vitamin A: National Vitamin A Supplementation Programme gives high-dose supplements to children 9 months to 5 years every 6 months

3. Mineral Deficiencies in India

UPSC Connect

UPSC GS3 — Food Security and Nutrition: Iron-deficiency anaemia is India's most prevalent nutritional deficiency:

  • NFHS-5 (2019-21): 57% of women aged 15–49 anaemic; 67% of children under 5 anaemic
  • Causes: low iron in diet (rice-dominant diets), low bioavailability, parasitic infections (hookworm), tea/coffee reducing iron absorption
  • Policy response: Anaemia Mukt Bharat — targets 6 beneficiary groups (children 6–59 months, 5–9 years, 10–19 years, pregnant women, lactating mothers, women 15–49)
  • Iron Folic Acid (IFA) supplementation + mandatory fortification of rice distributed under PDS

Iodine deficiency:

  • Causes goitre (enlarged thyroid), cretinism (severe intellectual disability in children) if deficient during pregnancy
  • India made iodisation of salt mandatory under the Prevention of Food Adulteration Act; later under FSSAI regulations
  • ~71 million Indians estimated at risk from iodine deficiency (WHO)

Zinc deficiency: affects ~17% of Indians; causes stunting, impaired immunity, delayed wound healing; significant in children under 5 — WHO includes zinc in diarrhoea treatment protocol (ORS + zinc)

4. India's Nutrition Programmes — Detailed

POSHAN Abhiyaan (2018):

  • PM's flagship nutrition programme targeting pregnant women, lactating mothers, children under 6
  • Targets to reduce stunting/wasting by 2%/year, underweight by 2%/year, anaemia by 3%/year
  • Uses ICDS infrastructure (Anganwadis) + technology (Poshan Tracker app for real-time monitoring)
  • Budget: ₹3 lakh crore across phases; integrates 9 ministries

ICDS (Integrated Child Development Services):

  • World's largest early childhood development programme
  • ~14 lakh Anganwadi Centres (AWCs) across India
  • Services: supplementary nutrition, immunisation, health check-up, referral, pre-school education, nutrition and health education
  • Beneficiaries: ~8 crore children under 6, ~2 crore pregnant/lactating women

PM POSHAN Scheme (formerly Mid-Day Meal):

  • Reaches ~11.8 crore children in 11.2 lakh schools
  • Dual benefit: nutrition + school attendance (especially girls); reduces dropout rates
  • Source of GS2 + GS3 overlap questions

NFSA 2013:

  • Covers 67% of India's population (75% rural, 50% urban)
  • Entitlement: 5 kg foodgrain/person/month at ₹1 (coarse grains), ₹2 (wheat), ₹3 (rice)
  • Antyodaya Anna Yojana (AAY) households: 35 kg/month
  • PM Garib Kalyan Anna Yojana (PMGKAY): free foodgrain (extended through 2028)

5. Food Safety — FSSAI

UPSC Connect

UPSC GS3 — Food Processing and Regulation: FSSAI (Food Safety and Standards Authority of India):

  • Established under Food Safety and Standards Act, 2006
  • Autonomous body under Ministry of Health and Family Welfare
  • Functions: sets standards for food products; licenses food businesses; enforces Food Safety Acts
  • "Eat Right India" initiative: promotes safe + healthy + sustainable food choices
  • Food adulteration is pervasive: FSSAI surveys found adulteration in milk (detergent, urea), honey (sugar syrup), spices (brick dust, Sudan dye), edible oils (mineral oil)
  • Fortification: FSSAI mandates + logo — Rice, wheat flour (+F logo), Edible oil, Milk — addresses micronutrient deficiency at population scale

GI Tags for Traditional Foods: India has 500+ GI tags; Darjeeling tea (first Indian GI, 2004), Alphonso mango, Tirupati laddoo — protect traditional food products' authenticity.

6. India's Dual Burden of Malnutrition

India faces simultaneous crises:

  • Undernutrition: 35.5% children stunted (NFHS-5); 19.3% wasted; 32.1% underweight
  • Overnutrition: 24% adults overweight/obese; rising type-2 diabetes, hypertension, cardiovascular disease
  • Hidden hunger: micronutrient deficiency without visible starvation — affects productivity, cognitive development
  • Nutrition transition: shift from traditional millets/pulses to polished rice/wheat + ultra-processed foods — driven by PDS incentives (rice/wheat subsidy) and urbanisation

Exam Strategy

Prelims traps:

  • Vitamin D deficiency → Rickets (children) / Osteomalacia (adults) — NOT the same disease name
  • Scurvy = Vitamin C deficiency (NOT Vitamin A)
  • Night blindness = Vitamin A deficiency (NOT Vitamin D)
  • NFHS-5 anaemia figures: women 57%, children under 5 = 67%
  • POSHAN Abhiyaan launched in 2018 (NOT 2014 or 2016)
  • FSSAI is under Ministry of Health, NOT Agriculture
  • PM POSHAN is the new name for Mid-Day Meal Scheme — older name still appears in options

Mains angles:

  • "India's malnutrition paradox — food surplus yet hungry millions. Examine the structural causes and policy gaps."
  • "Critically evaluate the POSHAN Abhiyaan in addressing India's nutrition challenge."
  • "The NFSA 2013 has transformed food security but not nutrition security in India. Comment."

Previous Year Questions

Prelims:

  1. Which vitamin deficiency causes Rickets in children?
    (a) Vitamin A
    (b) Vitamin C
    (c) Vitamin K
    (d) Vitamin D

  2. With reference to the POSHAN Abhiyaan, consider the following statements:

    1. It was launched in 2018.
    2. It is implemented by the Ministry of Women and Child Development.
    3. It targets children under 14 years of age.
      Which of the statements given above is/are correct?
      (a) 1 and 2 only
      (b) 2 and 3 only
      (c) 1, 2, and 3
      (d) 1 only

Mains:

  1. India faces a dual burden of malnutrition — undernutrition among children and obesity among adults. Examine the causes of this paradox and suggest a comprehensive policy response. (CSE Mains 2023, GS Paper 3, 15 marks)
  2. Discuss the role of FSSAI in ensuring food safety in India. What are the major challenges in food adulteration and how can they be addressed? (CSE Mains 2022, GS Paper 3, 10 marks)