Nutrition and Health Practice Questions

Q: A 9-year-old child needs vitamin A prophylaxis. What is the recommended dose and route of administration?

1,00,000 IU orally. ### Explanation The correct answer is **B. 1,00,000 IU orally**. #### 1. Why Option B is Correct Under the **National Vitamin A Prophylaxis Programme** in India, the dosage is strictly age-dependent. For an infant aged **6 to 11 months**, the recommended dose is a single dose of **1,00,000 IU**. The route of administration for Vitamin A prophylaxis is always **oral** (usually administered as 1 ml of the syrup) because it is highly effective, safe, and cost-efficient for mass distribution. #### 2. Why Other Options are Wrong * **Option A & C (Intramuscularly):** Vitamin A prophylaxis is never given via the intramuscular route in public health programs. The oral route is preferred due to ease of administration and better compliance. * **Option D (2,00,000 IU orally):** This is the standard dose for children aged **1 to 5 years**. Since the child in the question is 9 months old, this dose would be too high and could lead to toxicity (hypervitaminosis A). #### 3. High-Yield Clinical Pearls for NEET-PG * **Schedule:** The 1st dose (1 lakh IU) is given at **9 months** (with Measles/MR vaccine). Subsequent doses (2 lakh IU) are given every 6 months until the age of 5 years. * **Total Doses:** A child receives a total of **9 doses** (1 + 8). * **Total Cumulative Dose:** 17,00,000 IU (17 Lakh IU). * **Treatment vs. Prophylaxis:** For treating clinical Xerophthalmia, the dose is 2,00,000 IU on days 0, 1, and 14 (except for infants <6 months who receive 50,000 IU). * **Target:** The program primarily targets children aged 6 months to 5 years to prevent nutritional blindness and reduce child mortality.

Q: Which amino acid is considered limiting in soybean?

Methionine. **Explanation:** The concept of a **limiting amino acid** refers to the essential amino acid present in the lowest amount relative to the body's requirements in a particular food source. It "limits" the utilization of other amino acids for protein synthesis. **Why Methionine is Correct:** Soybean is a high-quality plant protein (often called "poor man's meat") because it contains all essential amino acids. However, like most **legumes and pulses**, it is relatively deficient in sulfur-containing amino acids, specifically **Methionine** and Cysteine. To achieve a "complete protein" profile, pulses are typically consumed with cereals (like rice or wheat), which are rich in Methionine but deficient in Lysine. This is known as **supplementary action of proteins**. **Analysis of Incorrect Options:** * **A. Threonine:** This is the second limiting amino acid in some cereals (like rice), but it is not the primary limiting factor in soy. * **B. Lysine:** This is the characteristic limiting amino acid in **cereals** (wheat, rice, maize). Soybeans are actually very rich in Lysine, which is why they complement cereal-based diets so well. * **C. Tryptophan:** This is the limiting amino acid in **Maize** (along with Lysine). A deficiency of Tryptophan in a maize-dependent diet leads to Pellagra (due to decreased endogenous synthesis of Niacin). **High-Yield Clinical Pearls for NEET-PG:** * **Pulse/Cereal Ratio:** The ideal ratio for protein supplementation is **1:4** (1 part pulse to 4 parts cereal). * **Reference Protein:** Egg is considered the reference protein (Biological Value = 100) because it contains all essential amino acids in ideal proportions. * **Net Protein Utilization (NPU):** Egg (96) > Milk (75) > Meat (74) > Soy (61). * **Limiting Amino Acid Mnemonic:** * **P**ulses are low in **M**ethionine (**P-M**). * **C**ereals are low in **L**ysine (**C-L**).

Q: Which one of the following pulses has the highest content of iron?

Soyabean. **Explanation:** In the context of nutritional biochemistry, pulses and legumes are significant plant-based sources of non-heme iron. Among the common pulses consumed in India, **Soyabean (Glycine max)** stands out as the richest source of both protein and iron. **Why Soyabean is Correct:** Soyabean contains approximately **10.4 mg of iron per 100g**. This high concentration makes it superior to other pulses. Beyond iron, it is also a "complete" plant protein source, containing all essential amino acids, which is a high-yield fact for metabolic biochemistry. **Analysis of Incorrect Options:** * **Bengal gram (Chickpea):** Contains approximately **4.6 to 5.3 mg** of iron per 100g. While a good source, it is roughly half the concentration found in soyabean. * **Black gram (Urad dal):** Contains approximately **3.8 to 6.0 mg** of iron per 100g. It is often highlighted for its high phosphoric acid content but falls short of soyabean in iron density. * **Red gram (Arhar/Pigeon pea):** Contains approximately **2.7 to 3.0 mg** of iron per 100g, making it the lowest iron provider among the given options. **Clinical Pearls for NEET-PG:** 1. **Bioavailability:** Although pulses are high in iron, the presence of **phytates and oxalates** acts as an anti-nutrient, inhibiting iron absorption. 2. **Enhancement:** Vitamin C (Ascorbic acid) should be co-ingested to convert ferric iron ($Fe^{3+}$) to ferrous iron ($Fe^{2+}$) for better absorption in the duodenum. 3. **Comparison:** While Soyabean is the highest among pulses, the overall highest plant-based source of iron often cited in exams is **Green Leafy Vegetables (specifically Amaranth or Phalse)**. 4. **Reference Values:** Always remember that the RDA for iron in an adult male is ~17 mg/day and for a menstruating female is ~21 mg/day.

Q: What is the recommended daily intake of vitamin B per 100 kilocalories?

0.05 mg. **Explanation:** The correct answer is **0.05 mg**. This value specifically refers to the requirement of **Thiamine (Vitamin B1)** in relation to energy intake. **1. Why 0.05 mg is correct:** The requirement for Thiamine is directly linked to carbohydrate metabolism. Thiamine pyrophosphate (TPP) acts as a coenzyme for the pyruvate dehydrogenase complex, which bridges glycolysis and the TCA cycle. Because Thiamine is essential for energy production, the ICMR (Indian Council of Medical Research) and WHO recommend a dietary intake of **0.5 mg per 1000 kcal**. When calculated per **100 kcal**, this equals **0.05 mg**. **2. Why the other options are incorrect:** * **0.5 mg:** This is the requirement per **1000 kcal**, not 100 kcal. It is a common distractor in exams. * **5.0 mg:** This value is significantly higher than the physiological requirement for Thiamine. For context, the total daily RDA for an average sedentary adult male is approximately 1.4–1.7 mg/day. * **1.0 gm:** This is a massive dose (gram level) and would be toxic or pharmacologically irrelevant for daily nutritional requirements. **3. High-Yield Clinical Pearls for NEET-PG:** * **Thiamine (B1) Deficiency:** Leads to **Beriberi**. * *Dry Beriberi:* Polyneuritis and muscle wasting. * *Wet Beriberi:* High-output heart failure and edema. * *Wernicke-Korsakoff Syndrome:* Seen in chronic alcoholics (triad of ophthalmoplegia, ataxia, and confusion). * **Riboflavin (B2):** Requirement is also energy-linked, calculated at **0.6 mg per 1000 kcal**. * **Niacin (B3):** Requirement is **6.6 mg per 1000 kcal**. * **Cooking Loss:** Thiamine is heat-labile and easily destroyed by neutral or alkaline cooking water (e.g., adding baking soda to pulses).

Q: What are the extra energy allowances needed per day during pregnancy?

350 Kcal. **Explanation:** The correct answer is **350 Kcal** (Option D). This value is based on the **ICMR-NIN (2020) guidelines**, which are the current gold standard for NEET-PG. **1. Why 350 Kcal is Correct:** During pregnancy, extra energy is required to support the growth of the fetus, placenta, and maternal tissues (like breast and uterine enlargement), as well as the increased basal metabolic rate (BMR). The ICMR recommends an additional **+350 Kcal/day** throughout the second and third trimesters for a woman with a normal BMI. This ensures adequate gestational weight gain and prevents low birth weight. **2. Why Other Options are Incorrect:** * **150 Kcal (Option A):** This was never a standard recommendation for pregnancy. It is significantly lower than the physiological requirement. * **200 Kcal (Option B):** This is insufficient. However, in some older international guidelines, the 1st trimester required minimal extra calories, but for exam purposes, the ICMR average is the priority. * **300 Kcal (Option C):** This was the **previous ICMR recommendation (pre-2020)**. Many older textbooks still list this value, but it has been updated to 350 Kcal to reflect modern nutritional needs. **3. High-Yield Clinical Pearls for NEET-PG:** * **Lactation Allowances:** The extra energy requirement for lactation is much higher: **+600 Kcal/day** (0–6 months) and **+520 Kcal/day** (6–12 months). * **Protein Requirements:** During pregnancy, the extra protein needed is **+9.5 g/day** (2nd trimester) and **+22.0 g/day** (3rd trimester). * **Iron & Folic Acid (IFA):** Under the *Anemia Mukt Bharat* strategy, pregnant women should receive 60 mg elemental Iron and 500 µg Folic Acid daily for 180 days. * **Weight Gain:** A normal-weight woman (BMI 18.5–24.9) should ideally gain **10–12 kg** during pregnancy.

Q: Which of the following statements about folic acid is FALSE?

Wheat flour in India is fortified with folate, similar to the USA.. **Explanation** The correct answer is **C**. While the USA and several other countries have mandatory folic acid fortification of wheat flour to prevent neural tube defects (NTDs), **India does not have a mandatory national policy for folate fortification of wheat flour.** Although India has a "Food Fortification Resource Centre" (FFRC) and voluntary fortification exists, it is not a universal mandate similar to the US FDA regulations. **Analysis of other options:** * **Option A:** Folic acid (Vitamin B9) derives its name from "folium" (leaf). It is abundantly present in **green leafy vegetables** (e.g., spinach), as well as legumes and liver. * **Option B:** Periconceptional supplementation of folic acid (400 mcg/day) is clinically proven to reduce the incidence of **Neural Tube Defects (NTDs)** like spina bifida and anencephaly. * **Option D:** The **Methyl Folate Trap** occurs in Vitamin B12 deficiency. B12 is a cofactor for **methionine synthase**, which converts N5-methyl-THF back to THF. Without B12, folate is "trapped" in the N5-methyl-THF form, leading to a functional folate deficiency and megaloblastic anemia. **High-Yield Clinical Pearls for NEET-PG:** * **Storage:** Unlike other B-vitamins, the liver stores enough folate for only **3–4 months** (deficiency develops rapidly). * **Absorption:** Occurs primarily in the **jejunum**. * **Antagonists:** Methotrexate, Trimethoprim, and Pyrimethamine inhibit **Dihydrofolate Reductase (DHFR)**. * **Diagnostic Test:** The **FIGLU excretion test** (Formiminoglutamic acid) is used to detect folate deficiency.

Q: How does a Village Health Guide measure the state of malnutrition in an under-5 child?

Mid-arm circumference. **Explanation:** The **Mid-Upper Arm Circumference (MUAC)** is the most appropriate tool for a Village Health Guide (VHG) because it is a **simple, quick, and field-friendly** screening method. It requires minimal training and no complex equipment, making it ideal for community-level health workers. Between the ages of 1 and 5 years, the MUAC remains relatively constant (around 15-16 cm) in healthy children. A measurement below **12.5 cm** indicates malnutrition, and below **11.5 cm** signifies Severe Acute Malnutrition (SAM). The VHG typically uses a "Shakir Tape" (color-coded) for easy interpretation: Green (Normal), Yellow (Borderline), and Red (Malnourished). **Analysis of Incorrect Options:** * **Weight-for-age (B):** This is the standard for growth monitoring in Anganwadi centers (using WHO Growth Charts). However, it requires a calibrated weighing scale and accurate plotting, which is more complex than a MUAC measurement for a VHG. * **Skin fold thickness (C):** This measures subcutaneous fat using Harpenden calipers. It is a research-grade tool and is too technical for routine use by community volunteers. * **Height-for-age (D):** This is used to measure **Stunting** (chronic malnutrition). It requires a stadiometer/infantometer and precise age documentation, which is often difficult to obtain in rural field settings. **High-Yield Clinical Pearls for NEET-PG:** * **MUAC** is the best predictor of **mortality risk** in children with PEM. * **Quac Stick:** A field method that relates MUAC to height (used when age is unknown). * **Weight-for-Height:** The best indicator for **Wasting** (acute malnutrition). * **Height-for-Age:** The best indicator for **Stunting** (chronic malnutrition). * **Weight-for-Age:** Used for **Underweight** (composite indicator of both acute and chronic malnutrition).

Q: How many calories does human milk contain?

72. **Explanation:** The energy content of human milk is a high-yield fact in Community Medicine and Pediatrics. On average, human milk provides approximately **65–70 kcal per 100 ml**. In the context of standard medical examinations like NEET-PG, **72 kcal/100 ml** is the most frequently cited and accepted value based on standard textbooks (like Park’s Preventive and Social Medicine). **Analysis of Options:** * **Option B (72 kcal):** This is the correct value. The energy in breast milk is primarily derived from fats (about 50%) and carbohydrates (lactose), providing the necessary fuel for the rapid growth and brain development of an infant. * **Option A (45 kcal):** This value is too low. While the caloric density can vary slightly based on maternal nutrition and the stage of lactation (e.g., colostrum vs. mature milk), it never drops this low in healthy individuals. * **Option C (117 kcal) & D (146 kcal):** These values are significantly higher than human milk. Such high caloric densities are usually only seen in specialized "high-calorie" infant formulas designed for preterm babies or infants with severe growth failure. **High-Yield Clinical Pearls for NEET-PG:** * **Composition per 100 ml:** Human milk contains approximately **1.1–1.2g of Protein**, **3.4–4.5g of Fat**, and **7g of Lactose**. * **Comparison with Cow’s Milk:** Cow’s milk has more protein (3.2g) but less lactose (4.4g) compared to human milk. The energy content of cow’s milk is slightly lower, at approximately **65–67 kcal/100 ml**. * **Colostrum:** The first milk produced (days 1–5) is rich in antibodies (IgA) and minerals but has a slightly lower caloric value (approx. 58 kcal/100 ml) than mature milk.

Q: The Kanawati index is used for assessing which of the following?

Protein energy malnutrition. **Explanation:** The **Kanawati Index** (also known as the Kanawati and McLaren Index) is a simple anthropometric tool used for the rapid assessment of **Protein-Energy Malnutrition (PEM)** in children, particularly in the age group of 1 to 5 years. It is calculated using the formula: **Kanawati Index = Mid-Arm Circumference (cm) / Occipito-frontal (Head) Circumference (cm)** * **Why it is correct:** In a healthy child, the head circumference grows rapidly in the first year but slows down thereafter, while muscle mass (reflected in mid-arm circumference) increases. In PEM, muscle wasting occurs, leading to a lower ratio. A value **>0.31** is considered normal, while values **<0.25** indicate severe malnutrition. **Analysis of Incorrect Options:** * **A. Socioeconomic status:** Assessed using scales like the Modified Kuppuswamy (urban), Udai Pareek (rural), or BG Prasad (income-based) scales. * **C. Food fortification:** Refers to the addition of micronutrients to food (e.g., Iodized salt, Vitamin A in oil). It is a public health strategy, not measured by an anthropometric index. * **D. Non-communicable disease:** Assessed via risk scores (e.g., WHO/ISH charts for CVD) or biochemical markers, not by mid-arm/head circumference ratios. **High-Yield Clinical Pearls for NEET-PG:** * **Quac Stick (Quaker Arm Circumference):** Uses a stick to measure Mid-Upper Arm Circumference (MUAC) against height to screen for PEM. * **Shakir’s Tape:** A tri-colored tape used for MUAC; Green (>13.5 cm) is normal, Yellow (12.5–13.5 cm) is borderline, and Red (<12.5 cm) indicates PEM. * **Rao’s Index:** Another PEM index calculated as $Weight / Height^2$. * **Bangalore Method:** A clinical grading system for PEM based on physical signs.

Question 1

A 9-year-old child needs vitamin A prophylaxis. What is the recommended dose and route of administration?

Accepted Answer

1,00,000 IU orally

Answer

1,00,000 IU intramuscularly

Answer

2,00,000 IU intramuscularly

Answer

2,00,000 IU orally

Question 2

Which amino acid is considered limiting in soybean?

Accepted Answer

Methionine

Answer

Threonine

Answer

Lysine

Answer

Tryptophan

Question 3

Which one of the following pulses has the highest content of iron?

Accepted Answer

Soyabean

Answer

Bengal gram

Answer

Black gram

Answer

Red gram

Question 4

Which of the following is NOT an indicator for the assessment of a nutritional program?

Accepted Answer

Prevalence of pregnant mothers having Hb<11.5g% in the 3rd trimester

Answer

Weight and height of the preschool child

Answer

Prevalence of low birth weight (less than 2.5 kg) in the community

Answer

Nutritional assessment of the preschool child

Question 5

What is the recommended daily intake of vitamin B per 100 kilocalories?

Accepted Answer

0.05 mg

Answer

0.5 mg

Answer

5.0 mg

Answer

1.0 gm

Question 6

What are the extra energy allowances needed per day during pregnancy?

Accepted Answer

350 Kcal

Answer

150 Kcal

Answer

200 Kcal

Answer

300 Kcal

Question 7

Which of the following statements about folic acid is FALSE?

Accepted Answer

Wheat flour in India is fortified with folate, similar to the USA.

Answer

It is present in all green leafy vegetables.

Answer

It is proven to decrease the occurrence of neural tube defects when taken pre-natally.

Answer

The methyl folate trap is caused by a defect in methionine synthase.

Question 8

How does a Village Health Guide measure the state of malnutrition in an under-5 child?

Accepted Answer

Mid-arm circumference

Answer

Weight-for-age

Answer

Skin fold thickness

Answer

Height-for-age

Question 9

How many calories does human milk contain?

Accepted Answer

72

Answer

45

Answer

117

Answer

146

Question 10

The Kanawati index is used for assessing which of the following?

Accepted Answer

Protein energy malnutrition

Answer

Socioeconomic status

Answer

Food fortification

Answer

Non-communicable disease

Nutrition and Health — MCQs

Nutrition and Health — MCQs

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