Nutrition and Health Practice Questions

Q: Which of the following is NOT a method for assessing obesity?

Sullivan's index. **Explanation:** The correct answer is **C. Sullivan’s Index**, as it is a measure of morbidity/disability rather than obesity. **1. Why Sullivan’s Index is the Correct Answer:** Sullivan’s Index (also known as **Disability-Free Life Expectancy**) is a vital health indicator used in epidemiology. It is calculated by subtracting the duration of bed disability and inability to perform major activities from the life expectancy. It represents the number of years a person can expect to live without disability. It has no clinical application in measuring body fat or obesity. **2. Analysis of Other Options (Methods to Assess Obesity):** * **A. Quetelet’s Index:** This is the most common name for **Body Mass Index (BMI)**, calculated as $Weight (kg) / Height (m^2)$. It is the international standard for classifying overweight and obesity. * **B. Broca Index:** A simple formula used to estimate ideal body weight. $Ideal Weight (kg) = Height (cm) - 100$. Deviations above this ideal weight are used to assess obesity. * **D. Corpulence Index:** Also known as the **Ponderal Index** or Rohrer's Index, it is calculated as $Weight (kg) / Height (m^3)$. It is often used in pediatrics to assess if a newborn is "wasted" or "stunted." **Clinical Pearls for NEET-PG:** * **Best measure of abdominal obesity:** Waist-to-Hip Ratio (WHR). A ratio $>0.9$ in men and $>0.85$ in women indicates central obesity. * **Skinfold thickness:** Measured using **Harpenden Calipers** (usually at the triceps) to estimate subcutaneous fat. * **Lorentz’s Formula:** A modification of the Broca index that accounts for gender. * **BMI Cut-offs (WHO):** Overweight: $\geq 25$; Obese: $\geq 30$. (Note: Indian/Asian cut-offs are lower: Overweight $\geq 23$; Obese $\geq 25$).

Q: What is the prophylactic dose of vitamin A for individuals aged 16 years?

200000 IU. ### Explanation The correct answer is **200000 IU**. **Underlying Medical Concept:** The National Prophylaxis Programme against Nutritional Blindness in India (now part of the Reproductive and Child Health program) mandates periodic high-dose Vitamin A supplementation to prevent Vitamin A Deficiency (VAD) and Xerophthalmia. According to the current guidelines: * **Infants (6–11 months):** A single dose of **100,000 IU**. * **Children (1–5 years):** A dose of **200,000 IU** every 6 months. * **Adolescents and Adults:** While the primary focus of the national program is children under 5, the standard therapeutic and prophylactic high-dose for anyone **above the age of 1 year** (including a 16-year-old) is **200,000 IU**. This dose is sufficient to maintain hepatic stores for approximately six months. **Analysis of Incorrect Options:** * **A (2000 IU):** This is closer to the Recommended Dietary Allowance (RDA) for daily intake, not a periodic prophylactic "mega-dose." * **B (20000 IU):** This dose is insufficient for long-term prophylaxis and does not align with any standard WHO or National Indian guidelines for periodic supplementation. * **D (100000 IU):** This is the specific dose reserved for infants aged **6 to 11 months**. Administering this to a 16-year-old would be a sub-therapeutic prophylactic dose. **High-Yield NEET-PG Pearls:** 1. **Total Doses:** A child should receive a total of **9 doses** by the age of 5 years (1st dose at 9 months with Measles/MR vaccine). 2. **Maximum Cumulative Dose:** The total amount administered by age 5 is **17,00,000 IU** (1 lakh + 8 times 2 lakhs). 3. **Treatment of Xerophthalmia:** The schedule is Day 0, Day 1, and Day 14 (200,000 IU per dose for those >1 year). 4. **Post-partum:** A single dose of 200,000 IU can be given to the mother within 8 weeks of delivery to increase Vitamin A content in breast milk.

Q: What is the best indicator for nutritional status in a child?

Rate of increase of height and weight. **Explanation:** The **rate of increase of height and weight** (growth velocity) is considered the most sensitive and best indicator of a child's nutritional status. Nutrition is a dynamic process; while a single measurement provides a "snapshot" of the current state, serial measurements plotted over time on a growth chart reveal the **trend of growth**. A flattening or decline in the growth curve is often the earliest sign of protein-energy malnutrition (PEM), appearing even before clinical signs manifest. **Analysis of Incorrect Options:** * **Mid-arm circumference (MUAC):** This is a useful screening tool for quick assessment of wasting (acute malnutrition) in children aged 6–59 months, especially in field settings. However, it is not as comprehensive as longitudinal height and weight monitoring. * **Head circumference:** This primarily reflects brain development rather than general nutritional status. It is useful for monitoring neurodevelopmental issues (e.g., microcephaly or hydrocephalus) up to age 2–3. * **Chest circumference:** This is used mainly in relation to head circumference (the ratio crosses 1:1 at age 1). It is a poor independent indicator of nutrition. **High-Yield Clinical Pearls for NEET-PG:** * **Weight for Age:** Reflects "Underweight" (combined indicator of acute and chronic malnutrition). * **Height for Age:** Reflects "Stunting" (indicator of **chronic** malnutrition). * **Weight for Height:** Reflects "Wasting" (indicator of **acute** malnutrition). * **Road to Health Chart:** The primary tool for "Growth Monitoring" in the ICDS program, where the direction of the curve is more important than the actual weight.

Q: What is the Recommended Dietary Allowance (RDA) for Iodine?

150 micrograms. **Explanation:** The correct answer is **150 micrograms (Option C)**. Iodine is an essential trace element required for the synthesis of thyroid hormones (T3 and T4), which regulate metabolic rate, growth, and brain development. According to the WHO and ICMR guidelines, the daily requirement for a healthy adult is 150 µg to maintain normal thyroid function and prevent Iodine Deficiency Disorders (IDD). **Analysis of Options:** * **Option A (300 µg):** This exceeds the standard adult RDA. However, it is closer to the upper limits or specific therapeutic doses sometimes discussed in high-risk scenarios, but not the baseline requirement. * **Option B (500 µg):** This is significantly higher than the RDA. The WHO defines the "Tolerable Upper Intake Level" for iodine as 1100 µg/day; 500 µg is safe but not the recommended daily standard. * **Option D (50 µg):** This is the minimum amount required to prevent goiter, but it is insufficient to maintain optimal health and physiological reserves. **High-Yield Clinical Pearls for NEET-PG:** * **Pregnancy/Lactation:** The RDA increases to **250 µg/day** to support fetal brain development. * **Iodized Salt:** Under the National Iodine Deficiency Disorders Control Programme (NIDDCP), salt must contain **30 ppm** of iodine at the production level and **15 ppm** at the consumer level. * **Indicator of Status:** The best epidemiological indicator for monitoring iodine status in a community is **Median Urinary Iodine Excretion (MUIE)**. A value of 100–199 µg/L indicates adequate intake. * **Goiter Rate:** A community is considered to have endemic goiter if the Total Goiter Rate (TGR) is **>5%** among primary school children.

Q: A patient presents with increased consumption of Bajra (pearl millet) roti and now complains of drowsiness and giddiness. What is the most likely diagnosis?

Ergotism. ***Ergotism*** - This condition results from ingesting grains, such as **pearl millet (Bajra)**, contaminated by the fungus *Claviceps fusiformis*. - The neurotoxic effects of **ergot alkaloids** cause the central nervous system (CNS) symptoms of the convulsive form, including **drowsiness** and **giddiness**. *Epidemic Dropsy* - This toxicity is caused by ingesting edible oils (typically mustard oil) contaminated with **argemone oil**. - The cardinal features are non-pitting **edema** (dropsy), skin pigmentation, and rarely, secondary glaucoma, not primarily CNS giddiness. *Botulism* - This illness is caused by the potent neurotoxin produced by *Clostridium botulinum*, usually found in improperly canned or preserved food. - The defining clinical presentation is a classic descending, symmetric **flaccid paralysis** often starting with cranial nerve symptoms (**diplopia, dysphagia**). *Fusarium Toxicity* - This involves various mycotoxins (e.g., **fumonisins, T-2 toxin**) contaminating cereals, most commonly maize. - Clinical syndromes include severe immunosuppression (Alimentary Toxic Aleukia) or liver/kidney damage, not the primary presentation of acute drowsiness and giddiness.

Q: A family consumes a diet predominantly of rice and pulses and developed signs of muscle weakness and movement. Which of the following should be given for prophylaxis?

Thiamine. ***Thiamine*** - A diet relying mainly on **polished rice** lacks essential micronutrients, particularly **thiamine (Vitamin B1)**, which is removed during the polishing process. - Deficiency of thiamine causes **Beriberi**, manifesting as neurological deficits (dry Beriberi leading to muscle weakness and neuropathy) or cardiovascular symptoms (wet Beriberi leading to high-output cardiac failure). *Calcium* - Calcium deficiency typically results in **hypocalcemia**, presenting as symptoms like **tetany**, muscle spasms, and paresthesia, which are distinct from Beriberi's clinical picture. - Although important for musculoskeletal health, supplementing calcium alone would not prevent the severe neurological and motor impairment seen in **thiamine deficiency**. *Vitamin D* - Deficiency of Vitamin D causes disorders of bone mineralization—**Rickets** in children and **Osteomalacia** in adults, primarily characterized by bone pain and fractures. - While Vitamin D deficiency can cause myopathy, it does not explain the specific cluster of symptoms (weakness and movement issues) related to a rice-dominant diet lacking the coenzyme necessary for carbohydrate metabolism. *Iron* - Iron deficiency leads to **microcytic hypochromic anemia**, whose primary symptoms include fatigue, dizziness, and pallor, not the characteristic movement and muscle weakness indicative of **Beriberi**. - Iron supplementation would address anemia but would fail to protect against severe neurological illness resulting from the lack of **thiamine**, which is crucial for energy generation in neural tissues.

Q: Which of the following is not a food adulteration disease?

Fluorosis. ***Fluorosis***- It results from excessive intake of **fluoride**, primarily through naturally occurring high levels in **drinking water**.- While fluoride can be present in food, it is generally considered an **environmental exposure disease** rather than one caused by intentional food adulteration.*Lathyrism*- Caused by chronic consumption of **khesari dal** (*Lathyrus sativus*), which is often mixed as an adulterant in pulses like *Arhar dal*.- The toxicity is due to the neurotoxin **beta-N-oxalylamino-L-alanine (BOAA)**, leading to irreversible lower limb paralysis (**neurolathyrism**).*Dropsy*- Also known as **epidemic dropsy**, it is caused by edible oils (most commonly mustard oil) adulterated with **Argemone mexicana oil**.- The toxic substance responsible for the disease is **sanguinarine**, causing generalized edema, cardiac failure, and glaucoma.*Aflatoxicosis*- Caused by ingesting food (such as groundnuts, maize, or cereals) contaminated with **aflatoxins**, which are toxic metabolites produced by the fungus *Aspergillus*.- While often resulting from contamination due to poor storage, aflatoxins represent a major form of food poisoning resulting from the poor quality or mixing of contaminated ingredients, causing severe **hepatotoxicity**.

Q: Which of the following is not caused by food adulteration?

Fluorosis. ***Fluorosis***- It results from excessive ingestion of **fluoride**, primarily through naturally high fluoride content in **drinking water** and not typically through intentional adulteration of processed food products.- The toxicity (dental or skeletal fluorosis) reflects a chronic environmental exposure problem rather than a case of acute or intentional food substance contamination.*Epidemic dropsy*- This condition is classically caused by the adulteration of **mustard oil** with **Argemone oil**, which contains the toxic alkaloid **sanguinarine**.- It is a recognized consequence of food fraud characterized by edema, skin pigmentation, and sometimes glaucoma.*Neurolathyrism*- It results from consuming food (such as chickpea flour) adulterated with excessive amounts of **Khesari dal (Lathyrus sativus)**.- The neurotoxin responsible is **BOAA (β-N-Oxalylamino-L-alanine)**, which causes irreversible motor neuron damage and spastic paraparesis.*Endemic ascites*- This condition, often presenting as **hepatic veno-occlusive disease (VOD)**, is caused by chronic consumption of food grains contaminated by **Pyrrolizidine alkaloids (PAs)**.- PAs are often found in weeds growing among food crops (like wheat or millets), and their inclusion during harvest is a form of accidental food contamination/adulteration leading to chronic liver damage.

Q: Chronic malnutrition is best measured by?

Height for age. ***Height for age*** - This index measures **stunting**, which is the definitive indicator of **chronic malnutrition** (long-term failure to achieve expected height). - A low height-for-age indicates that a child has suffered from sustained nutritional deficiencies or repeated infections over a prolonged period. *Weight for age* - This index measures **underweight**, reflecting a mixture of both **acute** and **chronic malnutrition**. - Since it is influenced by both weight loss (wasting) and long-term growth delay (stunting), it is less specific than H/A for solely quantifying chronicity. *Weight for height* - This index measures **wasting**, which is the indicator of **acute malnutrition** (recent, rapid weight loss). - It assesses current nutritional status and is essential for identifying conditions like severe acute malnutrition (SAM). *Body mass index* - BMI is a measure of generalized nutritional status, often used to define overweight or obesity in adults, but it is **not the primary index** for assessing stunting in children. - While correlated with weight-for-height, it does not specifically capture the historical growth failure characterized by low height-for-age.

Question 1

Which of the following is NOT a method for assessing obesity?

Accepted Answer

Sullivan's index

Answer

Quetelet's index

Answer

Broca index

Answer

Corpulence index

Question 2

What is the prophylactic dose of vitamin A for individuals aged 16 years?

Accepted Answer

200000 IU

Answer

2000 IU

Answer

20000 IU

Answer

100000 IU

Question 3

What is the best indicator for nutritional status in a child?

Accepted Answer

Rate of increase of height and weight

Answer

Mid-arm circumference

Answer

Head circumference

Answer

Chest circumference

Question 4

What is the Recommended Dietary Allowance (RDA) for Iodine?

Accepted Answer

150 micrograms

Answer

300 micrograms

Answer

500 micrograms

Answer

50 micrograms

Question 5

A patient presents with increased consumption of Bajra (pearl millet) roti and now complains of drowsiness and giddiness. What is the most likely diagnosis?

Accepted Answer

Ergotism

Answer

Fusarium Toxicity

Answer

Botulism

Answer

Epidemic Dropsy

Question 6

A family consumes a diet predominantly of rice and pulses and developed signs of muscle weakness and movement. Which of the following should be given for prophylaxis?

Accepted Answer

Thiamine

Answer

Iron

Answer

Vitamin D

Answer

Calcium

Question 7

Which of the following is not a food adulteration disease?

Accepted Answer

Fluorosis

Answer

Lathyrism

Answer

Aflatoxicosis

Answer

Dropsy

Question 8

Which of the following is not caused by food adulteration?

Accepted Answer

Fluorosis

Answer

Endemic ascites

Answer

Epidemic dropsy

Answer

Neurolathyrism

Question 9

Chronic malnutrition is best measured by?

Accepted Answer

Height for age

Answer

Weight for height

Answer

Body mass index

Answer

Weight for age

Question 10

The Anemia Mukt Bharat program aims to address anemia across India through targeted interventions. Which statement accurately describes its administration of Iron and Folic Acid (IFA) supplementation?

Accepted Answer

IFA is provided during the 2nd trimester of pregnancy and continues during lactation for up to 6 months

Answer

IFA supplementation is administered solely during pregnancy

Answer

Administering IFA during the 1st trimester is adequate.

Answer

A 100-day course of IFA supplementation is sufficient

Nutrition and Health — MCQs

Nutrition and Health — MCQs

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