Nutrition and Health Practice Questions

Q: What is true about dietary fibers?

Decrease postprandial glucose. **Explanation:** Dietary fibers are non-digestible carbohydrates that play a crucial role in metabolic health. The correct answer is **Decrease postprandial glucose** because soluble fibers (like pectin and gums) form a viscous gel in the small intestine. This gel slows down gastric emptying and delays the absorption of glucose, leading to a blunted glycemic response after meals—a key management strategy for Diabetes Mellitus. **Analysis of Options:** * **Option A (Incorrect):** Dietary fibers **decrease** stool transit time. Insoluble fibers (cellulose, lignin) add bulk to the stool and stimulate peristalsis, allowing waste to pass through the colon more rapidly, which prevents constipation. * **Option C (Incorrect):** This is a technical nuance. While fibers bind to bile acids, they actually **increase the excretion** of bile salts in the feces rather than simply "decreasing reabsorption" as a primary physiological definition in this context. However, compared to the direct metabolic effect on glucose, it is less definitive. * **Option D (Incorrect):** While fibers do help lower LDL cholesterol (by inhibiting enterohepatic circulation of bile acids), the most immediate and significant physiological impact highlighted in standard preventive medicine texts (like Park’s PSM) regarding dietary fiber's metabolic role is its effect on **carbohydrate metabolism and glycemic control.** **NEET-PG High-Yield Pearls:** * **Recommended Intake:** 40g of dietary fiber per 2000 kcal. * **Classification:** * *Soluble:* Pectins, Gums (Lower blood sugar and cholesterol). * *Insoluble:* Cellulose, Hemicellulose, Lignin (Relieve constipation). * **Protective Role:** High fiber diets are associated with a reduced risk of Coronary Heart Disease (CHD), Type 2 Diabetes, and Colorectal Cancer.

Q: What is the recommended daily dose of Vitamin A for children aged 1 to 6 years?

2 Lakh IU. ### Explanation The correct answer is **C. 2 Lakh IU**. **Underlying Medical Concept:** Vitamin A deficiency (VAD) is a major cause of preventable childhood blindness and increased morbidity from infections like measles and diarrhea. To combat this, the **National Prophylaxis Programme against Nutritional Blindness** in India follows a specific age-based schedule for Vitamin A supplementation. For children aged **1 to 5 years (up to 6 years)**, the recommended dose is **2 Lakh IU (60 mg of Retinol)** administered orally every 6 months. This high-dose periodic supplementation leverages the liver's ability to store Vitamin A for several months. **Analysis of Options:** * **A. 50,000 IU:** This dose is insufficient for prophylaxis in this age group. It is sometimes used in specific treatment protocols for infants under 6 months in clinical settings, but not as part of the national schedule. * **B. 1 Lakh IU:** This is the correct dose for the **first contact at 9 months** (administered along with the Measles/MR vaccine). It is half the dose required for older children. * **D. 4 Lakh IU:** This exceeds the recommended single dose and carries a high risk of hypervitaminosis A (toxicity), which can cause symptoms like bulging fontanelles and vomiting. **High-Yield Clinical Pearls for NEET-PG:** * **Total Doses:** A child should receive a total of **9 doses** starting from 9 months until 5 years of age. * **Total Cumulative Dose:** The total amount administered over 5 years is **17 Lakh IU** (1 Lakh at 9 months + 8 doses of 2 Lakhs each). * **Measles Management:** In a child diagnosed with Measles, **two doses** of Vitamin A should be given (one immediately and one the next day) regardless of when the last prophylactic dose was taken. * **Earliest Sign:** The earliest clinical sign of Vitamin A deficiency is **Conjunctival Xerosis**, while the earliest symptom is **Night Blindness (Nyctalopia)**.

Q: The poverty line limit for rural areas is the purchasing capacity for a daily intake of 2400 calories per person. What is the calorie limit for urban areas?

2100 calories. ### Explanation The concept of the **Poverty Line** in India, historically defined by the **Planning Commission (Alagh Committee, 1979)**, is based on the minimum nutritional requirement for survival. **1. Why 2100 calories is correct:** The calorie requirement for **urban areas** is set at **2100 kcal/person/day**. This is lower than the rural requirement because urban occupations are generally categorized as **sedentary to moderate** in nature. Urban dwellers typically have less physically demanding lifestyles and better access to mechanized transport compared to their rural counterparts. **2. Analysis of Incorrect Options:** * **A. 1900 calories:** This is below the subsistence level defined for the Indian population and does not align with any standard national poverty metric. * **C. 2400 calories:** This is the limit for **rural areas**. Rural populations are assumed to engage in more strenuous manual labor (agricultural activities), necessitating a higher energy intake. * **D. 2800 calories:** This exceeds the average daily requirement for a "Balanced Diet" for an Indian adult male (sedentary/moderate) and is not used as a benchmark for poverty line calculations. **3. NEET-PG High-Yield Pearls:** * **The "Poverty Line"** is a measure of **Absolute Poverty**. * **Reference Indian Adult (ICMR-NIN 2020):** * **Weight:** 65 kg (Male), 55 kg (Female). * **Sedentary Calories:** 2110 kcal (Male), 1660 kcal (Female). * **Net Protein Utilization (NPU):** For an average Indian diet, the NPU is approximately **50–65**. * **Protein Requirement:** 0.83 g/kg body weight/day (as per latest ICMR guidelines).

Q: Common to both acute and chronic malnutrition is?

Weight for age. ### Explanation In nutritional assessment, different anthropometric indices are used to distinguish between the duration and nature of malnutrition. **Why "Weight for Age" is the correct answer:** Weight for Age is a composite indicator. Because weight is sensitive to both recent starvation (acute) and long-term growth failure (chronic), this index reflects **both** types of malnutrition. However, its primary limitation is that it cannot distinguish between a child who is short but of normal weight (stunted) and a child who is tall but thin (wasted). In the IAP (Indian Academy of Pediatrics) classification, it is the standard parameter used to grade malnutrition. **Analysis of Incorrect Options:** * **Weight for Height (Wasting):** This is an indicator of **Acute Malnutrition**. It reflects a recent and severe process of weight loss, often associated with acute starvation or severe disease. * **Height for Age (Stunting):** This is an indicator of **Chronic Malnutrition**. It reflects linear growth retardation due to long-term dietary deficiency or recurrent infections. * **Body Mass Index (BMI):** While used to assess nutritional status (especially obesity or chronic energy deficiency in adults), it is not the primary tool used in community settings to differentiate between acute and chronic malnutrition in children. **High-Yield Clinical Pearls for NEET-PG:** 1. **Stunting (Height for Age):** Best indicator of "Nutritional Dwarfing" or long-term socio-economic deprivation. 2. **Wasting (Weight for Height):** Best indicator of current nutritional status and risk of mortality. 3. **Gomez Classification:** Uses Weight for Age. 4. **Waterlow’s Classification:** Uses Weight for Height (Wasting) and Height for Age (Stunting) to categorize malnutrition. 5. **Mid-Upper Arm Circumference (MUAC):** A rapid screening tool for acute malnutrition in children aged 6–59 months (Severe Acute Malnutrition is defined as MUAC <11.5 cm).

Q: Shakir's tape is used in which age group?

6 months to 5 years. **Explanation:** **Shakir’s Tape** (also known as the MUAC tape) is a simple, non-stretchable tape used to measure the **Mid-Upper Arm Circumference (MUAC)**. This measurement is a reliable indicator of muscle mass and is used as a screening tool to assess nutritional status, specifically to identify Protein-Energy Malnutrition (PEM) and Severe Acute Malnutrition (SAM) in field settings. **Why Option B is Correct:** The MUAC remains relatively constant between the ages of **6 months and 5 years (60 months)**. During this specific window, the arm circumference does not increase significantly despite the child's overall growth, making it an age-independent indicator of malnutrition. A measurement below 12.5 cm indicates malnutrition, and below 11.5 cm indicates SAM. **Analysis of Incorrect Options:** * **Option A (3 months):** At this age, the subcutaneous fat and muscle mass are still developing rapidly, making the measurement an unreliable indicator of chronic nutritional status. * **Options C & D (9 months/1 year):** While these ages fall within the range, they exclude the critical period between 6 months and 1 year where weaning begins and the risk of malnutrition significantly increases. **High-Yield Clinical Pearls for NEET-PG:** * **Color Coding:** Shakir’s tape uses a "Traffic Light" system: * **Green (>13.5 cm):** Normal nutritional status. * **Yellow (12.5 – 13.5 cm):** Borderline/At risk (Moderate Malnutrition). * **Red (<12.5 cm):** Severe Malnutrition (Note: WHO now uses **<11.5 cm** as the cutoff for SAM). * **Anatomical Landmark:** Measured at the midpoint between the **Acromion process** (shoulder) and the **Olecranon process** (elbow) of the left arm. * **Advantage:** It is more useful than Weight-for-Height in field surveys because it is not affected by edema.

Q: In which type of milk is calcium content maximum?

Buffalo milk. **Explanation** The nutritional composition of milk varies significantly across species based on the growth requirements of their offspring. **Buffalo milk** is the correct answer because it is the most nutrient-dense among the common options, containing the highest amounts of total solids, milk fat, and minerals. 1. **Buffalo Milk (Correct):** It contains approximately **210 mg of calcium per 100 ml**. This high mineral content, along with higher protein (casein) and fat levels, makes it more calorically dense (approx. 100 kcal/100 ml) compared to cow or human milk. 2. **Cow Milk:** Contains roughly **120 mg of calcium per 100 ml**. While it is a good source of calcium, it falls significantly short of buffalo milk. 3. **Goat Milk:** Contains about **130–170 mg of calcium per 100 ml**. While higher than cow milk, it does not surpass buffalo milk. It is often noted for having smaller fat globules, making it easier to digest for some. 4. **Human Milk:** Contains only about **28–34 mg of calcium per 100 ml**. Although the calcium content is the lowest, it has a high **calcium-to-phosphorus ratio (2:1)**, which ensures superior bioavailability and absorption for human infants compared to animal milks. **High-Yield NEET-PG Pearls:** * **Protein Content:** Buffalo milk has the highest protein (~4.3g), while Human milk has the lowest (~1.1g). * **Iron:** All types of milk are **poor sources of Iron**. * **Vitamin C:** Milk is a **poor source of Vitamin C**. * **Energy Value:** Buffalo milk (~100 kcal/100ml) > Cow milk (~67 kcal/100ml) ≈ Human milk (~65-70 kcal/100ml). * **Human Milk Advantage:** It is rich in **Lactose** (7g/100ml), which facilitates the absorption of calcium and supports the growth of *Lactobacillus bifidus* in the gut.

Q: Which of the following is considered the 'poor man's iron source'?

Jaggery. **Explanation** **Jaggery (Option D)** is known as the "poor man's iron source" because it is an affordable, unrefined sugar product that contains significant amounts of non-heme iron. Unlike refined white sugar, which provides empty calories, jaggery is produced by boiling sugarcane juice in iron vessels. During this process, it retains essential minerals and absorbs additional iron from the cooking pots, making it a cost-effective dietary intervention for preventing iron-deficiency anemia in resource-limited settings. **Analysis of Incorrect Options:** * **Almond (Option A):** While almonds are nutrient-dense and contain iron, they are expensive and considered a "luxury" nut, making them inaccessible as a primary iron source for the lower socioeconomic strata. * **Grapes (Option B):** Grapes contain negligible amounts of iron. While dried grapes (raisins) have more, they are not as potent or affordable a source as jaggery. * **Soya (Option C):** Soybeans are an excellent source of high-quality plant protein ("poor man's meat") and contain iron. However, they also contain phytates, which can inhibit iron absorption, and they are not traditionally labeled with this specific moniker. **Clinical Pearls for NEET-PG:** * **Iron Absorption:** Non-heme iron (found in jaggery) is absorbed in the **ferrous (Fe²⁺) state** in the duodenum. Absorption is enhanced by Vitamin C (Ascorbic acid). * **Nutritional Monikers:** * **Poor man’s meat:** Pulses/Soybeans (due to high protein content). * **Poor man’s milk:** Groundnut milk. * **Poor man’s apple:** Guava (high Vitamin C at low cost). * **Iron Deficiency:** It is the most common nutritional deficiency worldwide, characterized by microcytic hypochromic anemia on a peripheral smear.

Q: What is Broca's index?

Height minus 100. **Explanation:** **Broca’s Index** is a simple, historical method used to estimate the **Ideal Body Weight (IBW)** of an individual. It is particularly useful in clinical settings for quick assessments when complex calculations are not feasible. * **Why Option B is Correct:** The formula for Broca’s Index is: **Ideal Weight (kg) = Height (cm) – 100** For example, if a person is 170 cm tall, their ideal weight according to this index would be 70 kg (170 - 100). While it is less precise than the Body Mass Index (BMI), it remains a high-yield topic in Community Medicine exams due to its simplicity. * **Why Other Options are Incorrect:** * **Option A:** "Weight minus 100" has no physiological basis for determining nutritional status. * **Option C & D:** These represent ratios. **BMI (Quetelet's Index)** uses a specific ratio: $Weight (kg) / Height (m^2)$. Broca’s Index is a subtraction-based formula, not a division-based ratio. **High-Yield Clinical Pearls for NEET-PG:** 1. **Modified Broca’s Index:** Often used for more accuracy in men (Height - 100) and women (Height - 105). 2. **Corpulence Index:** Actual weight / Ideal weight (calculated by Broca's Index). A value >1.2 indicates obesity. 3. **Ponderal Index:** $Height (cm) / \sqrt[3]{Weight (kg)}$. Useful in pediatrics. 4. **Lorentz’s Formula:** A more refined version of Broca’s index: $Height (cm) - 100 - [(Height - 150) / 4]$. 5. **BMI Classification:** Remember the WHO classification (Normal: 18.5–24.9) vs. the **Asian-Indian classification** (Normal: 18–22.9; Overweight: 23–24.9; Obese: ≥25).

Q: Which type of milk provides the highest amount of calories per 100ml?

Buffalo milk. The caloric value of milk is primarily determined by its **fat content**, as fat provides 9 kcal/g compared to the 4 kcal/g provided by proteins and carbohydrates. ### Why Buffalo Milk is Correct **Buffalo milk** contains the highest amount of fat (approx. 6.5g to 7g per 100ml) among the common domestic sources. Consequently, it yields the highest energy, providing approximately **100–117 kcal per 100ml**. It is also richer in total solids, calcium, and phosphorus compared to cow or human milk. ### Analysis of Incorrect Options * **Human Milk:** Contains about 3.5g of fat and provides approximately **65–70 kcal per 100ml**. While it is the gold standard for infant nutrition due to its immunological properties and whey-to-casein ratio, it is lower in calories than buffalo milk. * **Cow Milk:** Contains about 3.5g to 4g of fat and provides approximately **67 kcal per 100ml**. Its composition is similar to human milk in terms of calories, though it has higher protein (casein) and lower lactose content. * **Goat Milk:** Provides approximately **70–75 kcal per 100ml**. While slightly higher in calories than cow milk, it still falls significantly short of buffalo milk. ### NEET-PG High-Yield Pearls * **Fat Content Ranking:** Buffalo > Goat > Cow ≈ Human. * **Protein Content:** Buffalo milk has the highest protein (~4.3g), while Human milk has the lowest (~1.1g). * **Iron Deficiency:** All types of milk are **poor sources of Iron** and Vitamin C. * **Specific Gravity:** Buffalo milk has a higher specific gravity than cow milk due to higher solid content. * **Clinical Note:** Buffalo milk is often diluted for infant feeding because its high solute load and curd tension can be difficult for an infant's immature digestive system and kidneys to process.

Question 1

Which of the following statements regarding folic acid supplementation is FALSE?

Accepted Answer

Fortified in all wheat products in India, similar to the USA.

Answer

Given preconceptionally for the prevention of neural tube defects.

Answer

Present in leafy vegetables and spinach.

Answer

The recommended daily intake during pregnancy is 500 mcg.

Question 2

What is true about dietary fibers?

Accepted Answer

Decrease postprandial glucose

Answer

Increase stool transit time

Answer

Decrease bile salt reabsorption

Answer

Decrease LDL cholesterol

Question 3

What is the recommended daily dose of Vitamin A for children aged 1 to 6 years?

Accepted Answer

2 Lakh IU

Answer

50,000 IU

Answer

1 Lakh IU

Answer

4 Lakh IU

Question 4

The poverty line limit for rural areas is the purchasing capacity for a daily intake of 2400 calories per person. What is the calorie limit for urban areas?

Accepted Answer

2100 calories

Answer

1900 calories

Answer

2400 calories

Answer

2800 calories

Question 5

Common to both acute and chronic malnutrition is?

Accepted Answer

Weight for age

Answer

Weight for height

Answer

Height for age

Answer

Body Mass Index

Question 6

Shakir's tape is used in which age group?

Accepted Answer

6 months to 5 years

Answer

3 months to 5 years

Answer

9 months to 5 years

Answer

1 year to 5 years

Question 7

In which type of milk is calcium content maximum?

Accepted Answer

Buffalo milk

Answer

Cow milk

Answer

Goat milk

Answer

Human milk

Question 8

Which of the following is considered the 'poor man's iron source'?

Accepted Answer

Jaggery

Answer

Almond

Answer

Grapes

Answer

Soya

Question 9

What is Broca's index?

Accepted Answer

Height minus 100

Answer

Weight minus 100

Answer

Height divided by weight

Answer

Weight divided by height

Question 10

Which type of milk provides the highest amount of calories per 100ml?

Accepted Answer

Buffalo milk

Answer

Human milk

Answer

Cow milk

Answer

Goat milk

Nutrition and Health — MCQs

Nutrition and Health — MCQs

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