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CM5.1-22 | Nutrition in Community Health — Practice Quiz
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According to ICMR-NIN 2020 guidelines, the Recommended Dietary Allowance (RDA) for protein in a sedentary adult Indian man (65 kg) is:
Correct. ICMR-NIN 2020 sets the protein RDA at 0.83 g/kg/day for all adults regardless of dietary pattern, replacing the older 1.0 g/kg figure.
ICMR-NIN 2020 protein RDA = 0.83 g/kg/day for sedentary adults of both sexes. Lactating mothers have an additive allowance of +17 g/day (months 0-6). Iron RDA for adult women is 29 mg/day; for men 19 mg/day.
Incorrect. The ICMR-NIN 2020 value is 0.83 g/kg/day — lower than older guidelines (1.0 g/kg) because the 2020 update used newer nitrogen balance studies. Option B (1.2 g/kg) is a WHO/FAO safe level for athletes, not the Indian population RDA.
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A 2-year-old child from a low-income family is brought to a rural health centre. On examination he has bilateral pitting pedal oedema, 'flaky paint' skin rash over the trunk, and a moon face, but his weight-for-height Z-score is -1.8. Which diagnosis best fits, and what is the defining feature that distinguishes it from the other classical PEM syndrome?
Correct. Kwashiorkor is defined by bilateral pitting oedema in a child, regardless of the weight-for-height Z-score. Marasmus is severe wasting (weight-for-height < -3 SD or MUAC < 11.5 cm) without oedema.
PEM types: Kwashiorkor = oedema (bilateral pitting) ± dermatosis ± hair changes ± moon face. Marasmus = severe wasting (weight < 60% expected), no oedema, 'old man' appearance. Marasmic-kwashiorkor = oedema + wasting. SAM MUAC cut-off: <11.5 cm. WHZ < -3 SD = SAM.
Incorrect. The defining feature of kwashiorkor is bilateral pitting oedema. The 'flaky paint' (crazy-paving dermatosis) rash is also seen in kwashiorkor, not marasmus. Marasmus shows extreme wasting with a 'baggy pants' appearance.
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The Integrated Child Development Services (ICDS) Scheme provides services to which combination of beneficiaries?
Correct. ICDS targets children 0-6 years (the critical window) and pregnant + lactating mothers. Services include supplementary nutrition, immunisation, health check-up, referral, pre-school education, and nutrition and health education.
ICDS (1975) key services (6): Supplementary Nutrition, Immunisation, Health Check-up, Referral, Pre-school Education, Nutrition & Health Education. Poshan Abhiyan (2018) / PM-POSHAN now integrates ICDS with WIFS, MAA, PMMVY. Anganwadi Worker delivers services at Anganwadi Centre.
Incorrect. ICDS serves children 0-6 years AND pregnant + lactating mothers — targeting the 1000-day window from conception to age 2. Adolescent girls (11-14 years, out-of-school) were added under the Kishori Shakti Yojana, but the core ICDS beneficiary definition is 0-6 years + PLMs.
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CLINICAL SCENARIO
During a rural field visit, a medical student is asked to assess the nutritional status of Anita, a 16-year-old girl from a Scheduled Tribe community. Her weight is 42 kg, height is 158 cm. Mid-upper arm circumference (MUAC) is 22 cm. She has no clinical signs of deficiency. Her 24-hour dietary recall shows: 3 small bowls of rice (≈ 150 g dry weight), 1 small bowl of dal (≈ 30 g dry), leafy vegetables twice per week, no animal products.
Answer the following questions based on the scenario above.
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What is Anita's BMI and how should it be classified using Indian adolescent references?
Correct. BMI = 42 / (1.58)² = 42 / 2.4964 ≈ 16.8 kg/m². For Indian adolescent girls aged 16 years, the WHO 2007 BMI-for-age reference classifies BMI < 18.5 as underweight (thinness), and < 16 as severe thinness. At 16.8, Anita is moderately thin (Grade 2 thinness by WHO).
Incorrect. BMI = weight (kg) ÷ height² (m²) = 42 ÷ 2.4964 ≈ 16.8. This is below the 18.5 cut-off and indicates thinness. Option B (18.5) and C (20.1) are arithmetically wrong. Option D (14.2) is incorrect arithmetic.
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Given Anita's dietary pattern (no animal products, rice-dominant, leafy vegetables only twice weekly), which micronutrient deficiency is she at highest risk of?
Correct. Adolescent girls face triple iron risk: vegetarian diet provides only non-haem iron (baseline absorption 5-10%), phytate in cereals and legumes chelates iron, and menstrual blood loss adds an ongoing deficit. NFHS-5 shows anaemia prevalence of 59.1% in women 15-19 years.
Incorrect. While Vitamin D, iodine, and zinc deficiencies are all possible, iron is the priority. Iodine deficiency risk depends on salt iodisation and is not uniform in all tribal areas. Zinc is present in dal (legumes), though absorption is reduced by phytate. Vitamin D is primarily synthesised cutaneously — dietary intake is a secondary concern.
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Which of the following are valid components of nutritional surveillance in India? a. NFHS (National Family Health Survey) — conducted every 5-7 years, covers anthropometry and dietary practices b. NNMB (National Nutrition Monitoring Bureau) — continuous surveillance of rural populations c. CNNS (Comprehensive National Nutrition Survey) — provides micronutrient data in children 0-19 years d. HMIS (Health Management Information System) — tracks routine ANC weight gain data e. POSHAN Tracker — collects Anganwadi-level anthropometry monthly
Correct. All five are valid surveillance tools: NFHS (periodic), NNMB (continuous rural), CNNS (comprehensive micronutrient), HMIS (routine health facility data), and POSHAN Tracker (real-time Anganwadi data). Together they form India's multi-level nutritional surveillance architecture.
Nutritional surveillance = continuous monitoring to guide programme decisions (FAO/WHO definition). India's surveillance triangle: Periodic surveys (NFHS, CNNS) for population estimates + Continuous systems (NNMB, HMIS) for trends + Real-time administrative data (POSHAN Tracker). Each layer has different timeliness, coverage, and resolution.
Incorrect. All five components are valid surveillance tools in India. HMIS includes maternal weight tracking at ANC. POSHAN Tracker replaced the older CAS (Common Application Software) for Anganwadi data.
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Under the National Iodine Deficiency Disorders Control Programme (NIDDCP), what is the mandatory level of iodine fortification in edible salt at the production level (before iodine losses during storage and cooking)?
Correct. FSSAI / NIDDCP mandates ≥30 ppm iodine at the production stage. Given losses during packaging, storage, and cooking (up to 50%), this ensures ≥15 ppm reaches the consumer — sufficient to meet the 150 µg/day iodine RDA for adults (assuming 10 g salt intake and 15 ppm).
NIDDCP: Universal Salt Iodisation mandates 30 ppm at production, 15 ppm at consumer level. Non-iodised salt sale is banned under PFA/FSSAI. Iodine RDA: 150 µg/day adults, 220 µg/day pregnancy, 290 µg/day lactation. IDD spectrum: cretinism (congenital), goitre, subclinical hypothyroidism. 75 million Indians at risk (iodine-deficient areas).
Incorrect. The production-level standard is 30 ppm (not 15). At 15 ppm consumer-level, the goal is met assuming 10 g salt/day. FSSAI 2021 further mandated ≥15 ppm at retail level. The two key figures: 30 ppm (production) and 15 ppm (consumer/retail).
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A Primary Health Centre Medical Officer is planning a food safety counselling session for a community that has experienced an outbreak of food-borne gastroenteritis. Which of the following correctly represents the WHO 5 Keys to Safer Food?
Correct. The WHO 5 Keys are: (1) Keep clean, (2) Separate raw and cooked, (3) Cook thoroughly (≥70°C core temperature), (4) Keep food at safe temperatures (<5°C or >60°C), (5) Use safe water and raw materials.
WHO 5 Keys to Safer Food: (1) Clean — handwashing, surface/utensil cleaning; (2) Separate — prevent cross-contamination; (3) Cook — 70°C kills most pathogens; (4) Safe temperatures — danger zone 5-60°C; (5) Safe water & raw materials. FSSAI's food safety legislation: FSS Act 2006, Hygiene and Sanitation Regulations 2011.
Incorrect. The exact WHO 5 Keys are: Keep clean / Separate raw and cooked / Cook thoroughly / Keep at safe temperatures / Use safe water and raw materials. Options B, C, and D mix valid food safety advice with non-standard or incomplete formulations.
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Assertion (A): Vitamin A supplementation is given every 6 months to children aged 9 months to 5 years as part of India's National Vitamin A Prophylaxis Programme. Reason (R): Vitamin A deficiency impairs epithelial integrity and innate immunity, increasing case-fatality rates from measles, diarrhoea, and pneumonia.
Correct. Both assertion and reason are true. The Vitamin A Prophylaxis Programme (6-monthly megadose supplementation from 9 months to 5 years) directly implements the evidence that Vitamin A deficiency increases infection-related mortality — R explains why the programme exists and why the dosing frequency is chosen.
VAD: Bitot's spots (earliest specific sign), xerophthalmia (night blindness → corneal xerosis → keratomalacia → blindness). Mega-dose schedule: 9 months (100,000 IU) at measles vaccine contact; 18 months-5 years (200,000 IU) every 6 months. Vitamin A also reduces measles CFR by 50% when given therapeutically. NFHS-5: only 27% of children 6-23 months received Vitamin A in last 6 months.
Incorrect. The assertion is true (6-monthly megadose, 9 months-5 years). The reason is true (VAD impairs immunity, increases infection CFR). And R is the correct explanation of A — it is because VAD kills through infection amplification that the programme prioritises this age group and this frequency.
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A mother asks: 'Can I give my 4-month-old baby boiled water on hot days, since I am exclusively breastfeeding?' What is the correct evidence-based response?
Correct. WHO defines exclusive breastfeeding (EBF) as breast milk ONLY — no water, other liquids, juice, honey, or solid foods — for the first 6 months. Breast milk is 87% water and fully meets hydration needs even in hot climates. Giving water reduces demand and supply, risks infection, and dilutes breast milk sodium.
EBF definition: breast milk only, including expressed milk, no other food or drink except prescribed drops/syrups (vitamins, minerals, medicines). India's EBF rate: 63.7% (NFHS-5, 6 months). Benefits: reduces diarrhoea, ARI, sudden infant death. WHO recommends EBF 0-6 months, then continued BF with complementary foods to 2 years.
Incorrect. EBF is strict — even water is excluded. The WHO definition allows only prescribed drops or syrups for medical reasons. Water supplementation reduces breastfeeding frequency, reduces demand, and decreases milk supply via feedback inhibitor of lactation (FIL). Options B and C are not evidence-based.
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At what age should complementary feeding begin, and what should be the consistency of food offered to a 6-7 month old infant?
Correct. WHO and IYCF guidelines: start complementary feeding at exactly 6 months (not before 4, not delayed past 6-7 months). The first foods should be thick purées/mash — not thin watery gruel — because thin gruel has low energy density and cannot meet the growing infant's caloric gap.
IYCF: Complementary feeding (CF) from 6 months. Consistency progression: 6-8 months (purées, mash, thick gruel); 9-11 months (finely chopped, finger foods); 12+ months (family foods). Frequency: 6-8 months 2-3×/day; 9-11 months 3-4×/day; 12-24 months 3-4×/day + 1-2 snacks. Breast milk continues alongside CF until 2 years.
Incorrect. Complementary feeding starts at 6 months (not 4, not 9). The WHO recommendation is clear: 4 months is too early (gut not ready, no teeth), 9 months is too late (iron gap, growth faltering risk). Thin watery gruel (option C) is insufficient — it fills the stomach without meeting caloric needs.
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A 52-year-old male farmer presents to the PHC with blood pressure of 148/94 mmHg on two readings. He eats rice, dal, and vegetable curry three times daily, uses a salt shaker at the table, and drinks 3 cups of heavily sweetened tea per day. Which single dietary modification has the strongest evidence base for reducing systolic blood pressure in this patient?
Correct. Sodium reduction is the single most evidence-supported dietary intervention for hypertension. WHO recommends <5 g/day of salt (<2 g Na). The DASH diet evidence shows a 5-6 mmHg systolic reduction from sodium restriction alone. Eliminating the table salt shaker is practical and immediate.
Hypertension dietary priorities: (1) Sodium <5 g/day salt (WHO), (2) DASH diet (fruits, vegetables, low-fat dairy, whole grains, reduced saturated fat), (3) Alcohol reduction (if applicable), (4) Weight loss (if overweight). Potassium (bananas, tomatoes, leafy greens) reduces BP but evidence for isolated potassium supplementation is weaker than sodium restriction.
Incorrect. While fibre, potassium, and sugar reduction are all beneficial, sodium reduction has the strongest and most consistent evidence base for systolic blood pressure reduction. The DASH trial (1997) and subsequent meta-analyses confirm sodium restriction as the first dietary intervention. The other options, though beneficial, have smaller or less consistent effect sizes.
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A patient shows you a packet of biscuits. The nutrition label reads: 'Trans Fat: 0 g per serving (30 g).' The ingredient list includes 'partially hydrogenated vegetable oil.' What is the correct interpretation?
Correct. FSSAI regulations allow '0 g trans fat' labelling when trans fat is <0.5 g per serving — so 0.49 g per serving is legally labelled as zero. A person eating 3-4 servings could consume nearly 2 g of trans fat, approaching the WHO maximum of <1% of total energy (≈ 2.2 g/day for a 2000 kcal diet). Partially hydrogenated oil is a red flag.
Trans fat red flags on food labels: 'partially hydrogenated oil' in ingredients even when TFA declared 0 g. FSSAI standard: ≤5% of total fat as TFA (food service oils), ≤2% (packaged foods) from 2021. WHO target: <1% of total energy (<2.2 g/day). Cardiovascular risk: TFA raises LDL AND lowers HDL simultaneously.
Incorrect. '0 g trans fat' on a food label does NOT guarantee zero trans fat. FSSAI (like USFDA) allows rounding down when <0.5 g/serving. Partially hydrogenated vegetable oil is the primary source of industrial trans fatty acids — its presence in the ingredient list is a reliable indicator of trans fat presence. FSSAI has mandated phasing out PHOs (deadline 2022), but legacy products may still circulate.
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