Nutrition and Health Practice Questions

Q: What is the RDA (Recommended Dietary Allowance) for vitamin A in infants aged 0-6 months?

350 mcg. ***350 mcg*** - The **Recommended Dietary Allowance (RDA)** for vitamin A in infants aged 0-6 months is specifically set at **350 micrograms (mcg)** of **retinol activity equivalents (RAE)**. - This level is based on the **average vitamin A intake from human milk** during this period, assuming adequate maternal nutrition. *600 mcg* - This value is higher than the recommended intake for infants aged 0-6 months and is closer to the RDA for **older infants** or **young children**. - Excessive vitamin A intake can be **toxic**, making adherence to age-specific RDAs crucial. *800 mcg* - This amount is significantly higher than the RDA for infants 0-6 months and approaches the RDA for **adults**. - Providing such a high dose to an infant could lead to **vitamin A toxicity**, with symptoms including irritability, increased intracranial pressure, and desquamation of the skin. *400 mcg* - While closer to the correct answer, **400 mcg** is still slightly above the established RDA of 350 mcg for this specific age group. - The precise RDA values are determined based on **extensive research** to ensure optimal health outcomes without risk of deficiency or toxicity.

Q: What is the role of iodized salt in the iodine deficiency control programme?

Primary prevention of iodine deficiency. ***Primary prevention of iodine deficiency*** - **Iodized salt** is a population-wide strategy to ensure adequate **iodine intake** in communities, preventing deficiency before it even occurs. - It aims to maintain normal **thyroid hormone** production and prevent disorders like **goiter** and **cretinism** in healthy individuals. *Secondary prevention of iodine deficiency* - **Secondary prevention** focuses on early diagnosis and prompt treatment in individuals already showing signs of a disease to prevent progression. - While screening for **iodine deficiency disorders (IDD)** might be secondary prevention, the universal use of iodized salt is not targeted at already deficient individuals but at the entire population. *Tertiary prevention of iodine deficiency* - **Tertiary prevention** involves managing existing conditions to prevent complications, reduce disability, and improve quality of life after a disease has manifested. - This would involve treating conditions like **severe hypothyroidism** or **cretinism** that result from prolonged iodine deficiency, for which **iodized salt** is not a direct treatment but a preventative measure. *Not applicable* - This option is incorrect as **iodized salt** plays a crucial and well-established role in public health for controlling **iodine deficiency**. - The scientific evidence and public health initiatives globally highlight its significant applicability in preventing **iodine deficiency disorders**.

Q: How much cereal do students in primary classes (I-V) receive per day under the Mid Day Meal Program (PM POSHAN)?

100 grams. ***100 grams*** - Under the **PM POSHAN (erstwhile Mid Day Meal) scheme**, students in **primary classes (I-V)** receive **100 grams of cereals** per day. - This quantity is designed to provide a significant portion of their daily nutritional requirements, contributing to **450-500 kcal of energy** and **12 grams of protein**. - This is the current guideline as per the scheme norms. *75 grams* - This quantity represents **outdated norms** from earlier versions of the Mid Day Meal Program. - The current scheme has **revised upward** the cereal allocation to meet the increased nutritional needs of growing children. *50 grams* - This quantity is **significantly lower** than prescribed standards for the PM POSHAN scheme. - Providing only 50 grams would result in **insufficient caloric intake** and fail to meet the program's nutritional objectives. *150 grams* - While 150 grams of cereals are prescribed for students in **upper primary classes (VI-VIII)**, it is **not the correct amount for primary students (I-V)**. - The question specifically asks about primary class students, for whom 100 grams is the prescribed quantity.

Q: What is the Recommended Dietary Allowance (RDA) for iodine in adults?

150 microgram. ***150 microgram*** - The **Recommended Dietary Allowance (RDA) for iodine in adults** is set at **150 micrograms (µg)** per day globally by organizations like the World Health Organization (WHO) and is adopted by many national dietary guidelines. - This amount is considered sufficient to maintain **normal thyroid function** and prevent iodine deficiency disorders in the majority of healthy adults. *300 microgram* - While a higher intake of iodine can be recommended in specific physiological states, such as **pregnancy and lactation** (often around 220-250 µg/day), 300 µg is generally above the standard RDA for healthy non-pregnant adults. - Consistently exceeding the **Upper Limit (UL)** for iodine intake (typically 1,100 µg/day) can lead to adverse effects like **iodine-induced hyperthyroidism or hypothyroidism**. *500 microgram* - An intake of 500 µg exceeds the RDA for healthy adults and approaches the **upper tolerable limits** for some individuals, potentially leading to adverse effects with prolonged consumption. - This level of iodine intake is typically not necessary for maintaining **euthyroid status** in most average adults without underlying conditions. *50 microgram* - An intake of **50 µg** per day is generally considered **insufficient** to meet the iodine requirements for most adults and would likely lead to an **iodine deficiency** over time. - Chronic intake at this level can increase the risk of developing **goiter**, **hypothyroidism**, and other **iodine deficiency disorders**.

Q: What is the primary strategy of the Iodine Deficiency Control Programme?

Fortification of salt. ***Fortification of salt*** - **Iodization of salt** is the most cost-effective and widely implemented strategy globally to prevent and control iodine deficiency disorders (IDDs), ensuring a consistent intake of iodine in the population. - This public health intervention targets a staple food item, making it accessible to a broad population regardless of socioeconomic status. - **India's National Iodine Deficiency Disorders Control Programme (NIDDCP)** mandates universal salt iodization as the primary strategy. *Health education* - While important for promoting the consumption of iodized salt and understanding the benefits, it is a **supportive measure** rather than the primary strategy for ensuring widespread iodine intake. - Health education alone cannot guarantee the universal availability and consumption of iodine, especially in areas where iodized salt is not readily supplied. *Water testing* - **Testing water for iodine content** is not a primary strategy as water is generally not a significant source of dietary iodine, and iodine deficiency is primarily addressed through food fortification. - Water quality testing is typically for contaminants and minerals affecting health, not specifically for iodine deficiency control. *Iodine supplementation* - While supplementation (iodized oil capsules) is used in **specific high-risk groups** or areas with severe deficiency, it is not sustainable as a universal primary strategy. - Supplementation requires active distribution and monitoring, making it less cost-effective than salt fortification for population-wide coverage.

Q: Anthropometric assessment, which does not show much change over a period of 1-4 years, is characteristic of:

Chest-to-head circumference ratio. ***Chest-to-head circumference ratio*** - **Chest-to-head circumference ratio remains relatively stable between 1-4 years of age** after the initial crossover period. - At birth, head circumference is greater than chest circumference. - At approximately **6-12 months**, the two measurements equalize, and chest circumference exceeds head circumference. - **After 1 year of age, this ratio stabilizes** and remains relatively constant throughout the 1-4 year period, making it a useful stable reference point. - This stability makes it less useful for detecting acute changes but confirms normal proportionate growth. *Mid arm circumference* - Mid-arm circumference (MAC) is used to assess nutritional status but **does show changes during the 1-4 year growth period**. - MAC typically ranges from 14-16 cm in this age group and increases with normal growth. - It is **sensitive to acute malnutrition** and can fluctuate with nutritional status, making it less stable over time. *Height* - Height is a dynamic measure that **changes significantly during childhood**. - Children grow approximately 10-12 cm per year between ages 1-4 years. - Height is used to assess **chronic malnutrition (stunting)** and shows continuous change, not stability. *Skin fold thickness* - Skin fold thickness (e.g., triceps skin fold) measures subcutaneous fat and reflects nutritional status. - It is **variable based on calorie intake, physical activity, and nutritional fluctuations**. - It does not remain stable over the 1-4 year period and is used to detect changes in fat stores.

Q: In xerophthalmia classification, which condition is classified as stage X2?

Corneal xerosis. ***Corneal xerosis*** - **Corneal xerosis** is classified as stage **X2** in the WHO classification of xerophthalmia, indicating pronounced dryness of the cornea. - This stage represents a more advanced form of **vitamin A deficiency** affecting the cornea itself. *Bitot's spots* - **Bitot's spots** are classified as stage **X1B**, which involves conjunctival changes rather than corneal. - They are typically foamy, white patches on the **bulbar conjunctiva**, indicating squamous metaplasia. *Corneal ulceration* - **Corneal ulceration**, also known as **corneal keratomalacia**, is classified as stage **X3A** or **X3B**, depending on its extent. - This stage signifies severe corneal damage and carries a high risk of blindness. *Corneal scar* - **Corneal scar** is classified as stage **XS**, indicating a permanent sequela of previous corneal xerophthalmia. - It represents irreversible damage to the cornea, often leading to significant visual impairment.

Q: What is the BMI of a person who is 1.72 meters tall and weighs 89 kilograms?

30. ***30*** - The Body Mass Index (BMI) is calculated using the formula: **BMI = weight (kg) / (height (m))^2**. - In this case, BMI = 89 kg / (1.72 m)^2 = 89 / 2.9584 ≈ **30.08**, which rounds to 30. - This falls into the **obese class I category** (BMI ≥ 30.0). *25* - This BMI represents the **threshold between normal weight and overweight** according to WHO classification. - BMI 18.5-24.9 is normal; BMI ≥ 25.0 is overweight. A BMI of exactly 25 marks this boundary. - A BMI of 25 would be achieved with a weight of approximately 74 kg for this height (25 × 1.72² = 74 kg). *27* - This BMI falls within the **overweight category** (25.0-29.9), but it is not the precise calculation for the given weight and height. - A BMI of 27 would be achieved with a weight of approximately 79.9 kg for this height (27 × 1.72² = 79.9 kg). *33.5* - This BMI falls within the **obese class I category** (30.0-34.9), but it is a higher value than the actual calculation for the given weight and height. - This BMI would correspond to a weight of approximately 99 kg for this height (33.5 × 1.72² = 99.1 kg).

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: 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**.

Question 1

What is the RDA (Recommended Dietary Allowance) for vitamin A in infants aged 0-6 months?

Accepted Answer

350 mcg

Answer

400 mcg

Answer

600 mcg

Answer

800 mcg

Question 2

What is the role of iodized salt in the iodine deficiency control programme?

Accepted Answer

Primary prevention of iodine deficiency

Answer

Secondary prevention of iodine deficiency

Answer

Tertiary prevention of iodine deficiency

Answer

Not applicable

Question 3

How much cereal do students in primary classes (I-V) receive per day under the Mid Day Meal Program (PM POSHAN)?

Accepted Answer

100 grams

Answer

75 grams

Answer

150 grams

Answer

50 grams

Question 4

What is the Recommended Dietary Allowance (RDA) for iodine in adults?

Accepted Answer

150 microgram

Answer

300 microgram

Answer

500 microgram

Answer

50 microgram

Question 5

What is the primary strategy of the Iodine Deficiency Control Programme?

Accepted Answer

Fortification of salt

Answer

Health education

Answer

Water testing

Answer

Iodine supplementation

Question 6

Anthropometric assessment, which does not show much change over a period of 1-4 years, is characteristic of:

Accepted Answer

Chest-to-head circumference ratio

Answer

Mid arm circumference

Answer

Skin fold thickness

Answer

Height

Question 7

In xerophthalmia classification, which condition is classified as stage X2?

Accepted Answer

Corneal xerosis

Answer

Bitot's spots

Answer

Corneal ulceration

Answer

Corneal scar

Question 8

What is the BMI of a person who is 1.72 meters tall and weighs 89 kilograms?

Accepted Answer

30

Answer

25

Answer

27

Answer

33.5

Question 9

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 10

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

Nutrition and Health — MCQs

Nutrition and Health — MCQs

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