Nutrition and Health Practice Questions

Q: Quetelet's index, used to assess obesity, is represented as:

Weight divided by the square of height. ***Weight divided by the square of height*** - **Quetelet's index**, more commonly known as **Body Mass Index (BMI)**, is calculated as an individual's **weight in kilograms** divided by the **square of their height in meters**. - This formula provides a standardized measure for assessing whether a person's weight is healthy for their height, indicating categories like **underweight, normal weight, overweight, or obese**. *Weight divided by height* - This formula yields a linear ratio of weight to height, which does not accurately account for the increasing surface area of the body with height. - It would disproportionately classify taller individuals as heavier (and vice versa) even if their proportions are healthy. *Height divided by weight* - This inversion of the ratio would give a smaller value for heavier individuals, making it unsuitable for assessing obesity. - It would not align with established health metrics for weight assessment. *Height divided by the square of weight* - This formula would result in very small numbers, particularly for heavier individuals, and is not a recognized or validated measure for assessing body composition or obesity. - Squaring the weight in the denominator creates an exaggerated inverse relationship, rendering it clinically meaningless.

Q: Which index of obesity does not include height?

Waist circumference. ***Waist circumference*** - **Waist circumference** directly measures abdominal fat accumulation, which is a significant indicator of health risk independent of height. - It does not incorporate height in its calculation, making it a simple and practical tool for assessing **central obesity**. *BMI* - **Body Mass Index (BMI)** is calculated using a person's **weight in kilograms divided by the square of their height in meters** (kg/m²). - Therefore, height is an integral component of the BMI calculation. *Ponderal's index* - **Ponderal's index** (also known as the Rohrer Index) is calculated as **weight in kilograms divided by the cube of height in meters** (kg/m³). - This index explicitly includes height as a cubed variable in its formula. *Broca's index* - **Broca's index** estimates ideal body weight based on height (ideal weight in kg = height in cm - 100). - It is directly dependent on height for its calculation.

Q: Which of the following statements is correct regarding lactic acid, sorbic acid, and sulphurous acid?

All of these substances are preservatives. ***All of these substances are preservatives*** - **Lactic acid**, **sorbic acid**, and **sulfurous acid** are all commonly used as food preservatives due to their antimicrobial properties. - They inhibit the growth of bacteria, yeasts, and molds, thereby extending the shelf life of food products. *Lactic acid and sorbic acid only* - This option is incorrect because **sulfurous acid** is also a widely recognized food preservative. - While lactic and sorbic acids are preservatives, excluding sulfurous acid makes this statement incomplete. *Sorbic acid and sulphurous acid only* - This option is incorrect as **lactic acid** is also a food preservative. - Lactic acid is naturally present in fermented foods and is added to many products to prevent spoilage. *None of these substances are preservatives* - This option is completely incorrect as **lactic acid**, **sorbic acid**, and **sulfurous acid** are all established and widely utilized food preservatives. - They play crucial roles in food safety and preservation.

Q: What is the recommended daily energy intake in kilocalories for an adult woman engaged in heavy physical labor?

2900. ***2900*** - For an adult woman engaging in **heavy physical labor**, a daily energy intake of around **2900 kcal** is often recommended to meet the increased metabolic demands and prevent energy deficit. - This intake supports **sustained physical performance** and maintenance of body weight during strenuous activities. *1800* - An intake of **1800 kcal** is typically insufficient for an adult woman involved in heavy physical labor, as it may lead to **energy deficit**, fatigue, and potential weight loss. - This level is more appropriate for women with a **sedentary lifestyle** or those aiming for weight loss. *2100* - While slightly more than a sedentary intake, **2100 kcal** would likely still be inadequate for an adult woman performing heavy physical labor, potentially resulting in **suboptimal performance** and recovery. - This range is often suitable for women with **moderately active lifestyles**. *2300* - **2300 kcal** is an improvement over lower estimates but still generally falls short of the energy requirements for an adult woman engaged in **heavy physical labor**, impeding **optimal physiological function**. - This intake is more aligned with individuals involved in **light to moderate physical activity**.

Q: What is the recommended daily intake of milk for a healthy adult with moderate physical activity?

300 ml/day. ***300 ml/day*** - According to **ICMR (Indian Council of Medical Research)** and **National Institute of Nutrition (NIN) guidelines**, the recommended daily intake of milk for a healthy adult is **300 ml per day**. - This amount provides approximately **300-360 mg of calcium**, contributing significantly to the adult requirement of **600 mg/day**. - This recommendation ensures adequate intake of **calcium, protein, vitamin B12, riboflavin, and vitamin A** for bone health and overall nutrition. *250 ml/day* - While this is close to the recommendation, it is **slightly below the ICMR/NIN standard of 300 ml/day**. - This amount would provide adequate nutrition but may fall short of optimal calcium intake without additional dairy sources. *200 ml/day* - This intake is **below the recommended amount** and may not provide sufficient calcium and nutrients for optimal bone health. - Adults consuming this amount would need to supplement with other **calcium-rich foods** like yogurt, cheese, or fortified foods. *150 ml/day* - This is **significantly below the recommended intake** and would be insufficient to meet daily calcium requirements. - Such low intake increases the risk of **calcium deficiency** without substantial dietary supplementation. *100 ml/day* - This is **grossly inadequate** for meeting the daily nutrient needs from milk. - Would require **multiple alternative calcium sources** to reach adequate intake levels.

Q: As per WHO guidelines, iodine deficiency disorders are considered endemic in the community when the prevalence of goitre in school-age children exceeds what percentage?

5%. ***5%*** - According to **WHO guidelines**, iodine deficiency disorders are considered **endemic** when the prevalence of goitre in school-age children **exceeds 5%**. - This is the **specific threshold** established by WHO to classify a community as having endemic iodine deficiency requiring public health intervention. - School-age children (6-12 years) are used as the indicator population because they are the most sensitive group for detecting iodine deficiency. *1%* - This percentage is **below the WHO threshold** of 5% for defining endemic iodine deficiency. - A prevalence of 1% indicates mild iodine insufficiency but does not meet the criteria for endemicity requiring immediate widespread intervention. *10%* - While 10% prevalence certainly indicates a **moderate to severe public health problem**, this is not the WHO threshold for defining endemicity. - The threshold is **5%, not 10%** - any prevalence exceeding 5% (including 10%) would be classified as endemic. *15%* - This represents a **severe iodine deficiency problem**, but it is not the WHO threshold percentage. - The correct threshold is **5%** - both 10% and 15% exceed this threshold and would be classified as endemic, but they are not the defining cutoff point.

Q: Which parameter is considered the best for assessing chronic malnutrition?

Height relative to age. ***Height relative to age*** - **Height-for-age** is the best indicator of **chronic malnutrition** (stunting) because it reflects prolonged nutritional inadequacy and retarded linear growth. - A low height-for-age indicates that a child has suffered from long-term nutritional deficits, affecting their growth potential. *Weight relative to age* - **Weight-for-age** is a composite indicator that reflects both acute and chronic malnutrition, but it doesn't differentiate between them. - A low weight-for-age could indicate **wasting** (acute) or **stunting** (chronic), or both. *Weight relative to height* - **Weight-for-height** is the best indicator of **acute malnutrition** (wasting). - It reflects recent and severe weight loss or failure to gain weight, indicating a current nutritional deficit, not necessarily a long-term one. *Circumference of the mid-arm* - **Mid-upper arm circumference (MUAC)** is primarily used as a screening tool for **acute malnutrition** in children, particularly in emergency situations. - While useful for community-based screening, it is not as precise for assessing chronic malnutrition over time compared to height-for-age.

Q: Which toxin is primarily responsible for epidemic dropsy?

Sanguinarine (from bloodroot). ***Sanguinarine (from bloodroot)*** - **Sanguinarine** is an alkaloid found in *Argemone mexicana* (Mexican prickly poppy/bloodroot) seeds - Epidemic dropsy occurs when **argemone oil contaminates cooking oils** (especially mustard oil) - Causes **bilateral pitting edema**, **congestive cardiac failure**, **respiratory distress**, and **glaucoma** - Toxin damages **capillary permeability**, leading to fluid leakage and widespread edema - Major outbreaks documented in India, particularly in **Bengal (1998)** and **Delhi (1998)** *BOAA* - **BOAA** (β-N-Oxalylamino-L-alanine) is found in *Lathyrus sativus* (grass pea/khesari dal) - Causes **neurolathyrism**, characterized by **spastic paraplegia** (irreversible lower limb paralysis) - Affects the **motor neurons**, not vascular permeability - Clinically distinct from epidemic dropsy with **no edema or cardiac involvement** *Aflatoxin B1* - Produced by *Aspergillus flavus* and *Aspergillus parasiticus* fungi - Potent **hepatotoxin** and **hepatocarcinogen** - Causes **acute liver necrosis** and **hepatocellular carcinoma** - Not associated with edema or epidemic dropsy *Pyrrolizidine alkaloids* - Found in plants like *Heliotropium* and *Crotalaria* species - Cause **hepatic veno-occlusive disease** (sinusoidal obstruction syndrome) - Present with **hepatomegaly**, **ascites**, and **jaundice** - Liver pathology, not the widespread peripheral edema seen in epidemic dropsy

Q: Primary prevention of obesity includes:

High fiber diet. ***High fiber diet*** - A **high fiber diet** promotes satiety, reducing overall caloric intake, which is a key strategy in the **primary prevention of obesity**. - Fiber also aids in **digestive health**, helps regulate blood sugar levels, and reduces energy density of foods, all preventing weight gain. - **High fiber intake is strongly recommended** by WHO and ICMR guidelines for obesity prevention. *Low fiber diet* - A **low fiber diet** can lead to less satiety, potentially increasing overall calorie consumption and contributing to weight gain. - It does not offer the same benefits in terms of digestive regulation or blood sugar control as a high-fiber diet. *High cholesterol diet* - A **high cholesterol diet** is primarily associated with an increased risk of **cardiovascular disease** and does not directly target the mechanisms of obesity prevention. - While some high-cholesterol foods may contribute to high caloric intake, the focus for obesity prevention is on overall caloric balance and nutrient density rather than cholesterol content alone. *High intake of protein* - While **adequate protein intake** is beneficial for satiety and maintaining muscle mass during weight management, it is not the **primary focus** of obesity prevention strategies compared to **high fiber intake**. - Among the given options, **high fiber diet** is the most evidence-based and universally recommended primary prevention strategy for obesity, as emphasized in dietary guidelines worldwide.

Q: Calcium requirement above the normal during the first six months of lactation is -

600 mg/day. ***600 mg/day*** - The increased calcium requirement during the first six months of lactation is primarily due to the significant amount of calcium secreted in **breast milk** for infant bone development. - During lactation, approximately **210-300 mg of calcium per day** is lost through breast milk, and considering **absorption efficiency** and maintaining maternal **bone density**, an additional **600 mg/day** above baseline requirements is recommended. - This additional intake helps meet the demands of milk production and prevent maternal bone demineralization during the period of **peak lactation**. *400 mg/day* - While calcium needs are elevated in lactation, an additional **400 mg/day** is insufficient to fully compensate for the calcium loss through breast milk during the initial, high-volume milk production phase. - This amount does not adequately account for both milk calcium content and the need to maintain maternal bone health during the first six months of lactation. *550 mg/day* - This increment is close but is generally considered slightly below the recommended additional intake for optimal maternal health and infant nutrition during **peak lactation**. - Adequate calcium intake is crucial as insufficient levels can lead to a negative calcium balance and increased risk of maternal **osteoporosis**. *75 mg/day* - An additional **75 mg/day** is a negligible increase and is far too low to meet the substantial calcium demands during the first six months of lactation. - This amount would be grossly inadequate considering that lactating mothers lose approximately **210-300 mg of calcium per day** into breast milk alone, not accounting for maternal physiological needs.

Question 1

Quetelet's index, used to assess obesity, is represented as:

Accepted Answer

Weight divided by the square of height

Answer

Weight divided by height

Answer

Height divided by weight

Answer

Height divided by the square of weight

Question 2

Which index of obesity does not include height?

Accepted Answer

Waist circumference

Answer

BMI

Answer

Broca's index

Answer

Ponderal's index

Question 3

Which of the following statements is correct regarding lactic acid, sorbic acid, and sulphurous acid?

Accepted Answer

All of these substances are preservatives

Answer

Lactic acid and sorbic acid only

Answer

Sorbic acid and sulphurous acid only

Answer

None of these substances are preservatives

Question 4

What is the recommended daily energy intake in kilocalories for an adult woman engaged in heavy physical labor?

Accepted Answer

2900

Answer

1800

Answer

2100

Answer

2300

Question 5

What is the recommended daily intake of milk for a healthy adult with moderate physical activity?

Accepted Answer

300 ml/day

Answer

200 ml/day

Answer

100 ml/day

Answer

150 ml/day

Answer

250 ml/day

Question 6

As per WHO guidelines, iodine deficiency disorders are considered endemic in the community when the prevalence of goitre in school-age children exceeds what percentage?

Accepted Answer

5%

Answer

10%

Answer

15%

Answer

1%

Question 7

Which parameter is considered the best for assessing chronic malnutrition?

Accepted Answer

Height relative to age

Answer

Weight relative to age

Answer

Weight relative to height

Answer

Circumference of the mid-arm

Question 8

Which toxin is primarily responsible for epidemic dropsy?

Accepted Answer

Sanguinarine (from bloodroot)

Answer

BOAA

Answer

Aflatoxin B1

Answer

Pyrrolizidine alkaloids

Question 9

Primary prevention of obesity includes:

Accepted Answer

High fiber diet

Answer

Low fiber diet

Answer

High intake of protein

Answer

High cholesterol diet

Question 10

Calcium requirement above the normal during the first six months of lactation is -

Accepted Answer

600 mg/day

Answer

75 mg/day

Answer

400 mg/day

Answer

550 mg/day

Nutrition and Health — MCQs

Nutrition and Health — MCQs

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