Nutrition and Health Practice Questions

Q: According to the World Health Organization (WHO), what is the cutoff for anemia in adult males?

13 g/dL. **Explanation:** The diagnosis of anemia is based on hemoglobin (Hb) levels falling below the established physiological needs of an individual, which vary by age, sex, and physiological status (like pregnancy). According to **WHO criteria**, the cutoff for anemia in **adult males (≥15 years) is <13 g/dL**. This higher threshold for men is primarily due to the stimulatory effect of androgens on erythropoiesis and the absence of menstrual blood loss. **Analysis of Options:** * **Option A (13 g/dL):** Correct. This is the global standard set by the WHO for adult men. * **Option B (12 g/dL):** Incorrect. This is the cutoff for **non-pregnant adult females** (≥15 years). * **Option C (11 g/dL):** Incorrect. This is the cutoff for **pregnant women** and children aged **6–59 months**. * **Option D (10 g/dL):** Incorrect. While not a diagnostic cutoff for anemia presence, <10 g/dL is often used to classify "moderate" anemia (7.0–9.9 g/dL). **High-Yield NEET-PG Pearls:** 1. **WHO Classification of Anemia Severity (Adults):** * **Mild:** 11.0 g/dL to cutoff (12.9 for men, 11.9 for women). * **Moderate:** 7.0–9.9 g/dL. * **Severe:** 1000m) to compensate for lower oxygen partial pressure. 4. **Smokers:** Hb cutoffs are higher for smokers due to increased carboxyhemoglobin levels.

Q: Which of the following represents international food standards?

Codex Alimentarius standards. ### Explanation **Correct Answer: B. Codex Alimentarius standards** The **Codex Alimentarius** (Latin for "Food Code") is a collection of internationally recognized standards, codes of practice, and guidelines relating to food, food production, and food safety. It was established in 1963 by the **Food and Agriculture Organization (FAO)** and the **World Health Organization (WHO)**. Its primary objectives are to protect consumer health and ensure fair practices in international food trade. It serves as the global reference point for consumers, food producers, and national food control agencies. **Why other options are incorrect:** * **Bureau of Indian Standards (BIS):** This is the National Standards Body of India. While it covers food products (like ISI marks on bottled water), it is a national body, not an international one. * **Agricultural Mark (AgMark):** This is a certification mark employed on agricultural products in **India**. It ensures quality based on the Agricultural Produce (Grading and Marking) Act of 1937. * **Prevention of Food Adulteration (PFA):** This was an Indian Act (1954) aimed at ensuring pure food supply to consumers. It has since been repealed and replaced by the **FSSAI** (Food Safety and Standards Authority of India) Act, 2006. **High-Yield Facts for NEET-PG:** * **FSSAI (2006):** The current apex body for food safety in India, consolidating various older acts like PFA and AgMark. * **ISI Mark:** Issued by BIS; mandatory for items like infant foods and packaged drinking water. * **Consumer Protection:** While Codex is international, the **Consumer Protection Act (1986)** is the primary legal tool for consumer rights in India. * **Nutritional Surveillance:** Remember that the **National Institute of Nutrition (NIN)**, Hyderabad, sets the Recommended Dietary Allowances (RDA) for Indians.

Q: What is the principal impact indicator in Iodine Deficiency disorders?

Urinary Iodine Levels. **Explanation:** The assessment of Iodine Deficiency Disorders (IDD) relies on specific indicators categorized by their physiological relevance. **Urinary Iodine Excretion (UIE)** is considered the **principal impact indicator** because more than 90% of dietary iodine is eventually excreted in the urine. It serves as a sensitive, direct, and current biochemical marker of recent iodine intake (reflecting the status over the past few days). For public health monitoring, a median urinary iodine concentration of **100–199 µg/L** in school-age children indicates adequate iodine nutrition in a population. **Analysis of Incorrect Options:** * **Goitre Assessment (Option B):** This is a **process indicator** reflecting long-term cumulative exposure. While useful for baseline prevalence, goitre regresses slowly even after iodine supplementation, making it a poor indicator of recent impact or immediate changes in iodine status. * **Neonatal TSH levels (Option C):** This is a sensitive indicator of iodine deficiency during the critical period of brain development (pregnancy and early infancy). However, it is primarily used for screening congenital hypothyroidism rather than as the primary tool for general population impact monitoring. * **Salt Iodine Content (Option D):** This is a **process/input indicator**. It monitors the success of the Universal Salt Iodization (USI) program but does not measure the actual physiological status of the individuals consuming it. **High-Yield NEET-PG Pearls:** * **Best indicator for IDD monitoring in a community:** Urinary Iodine Excretion. * **Most sensitive indicator for iodine deficiency in newborns:** Neonatal TSH (levels >5 mU/L in >3% of samples indicate iodine deficiency). * **Standard Salt Iodization levels:** 30 ppm at the production level; 15 ppm at the consumer level. * **Goal of NIDDCP:** To reduce the prevalence of IDD to below 5% in the country.

Q: Which of the following is not included in the Malnutrition Universal Screening Tool (MUST) for the assessment of risk of undernutrition?

Age. The **Malnutrition Universal Screening Tool (MUST)** is a five-step screening tool designed to identify adults who are malnourished, at risk of malnutrition, or obese. It is widely used in both community and hospital settings. ### Why Age is the Correct Answer **Age** is not a parameter used in the MUST scoring system. While age is a risk factor for malnutrition, the MUST tool focuses on physiological and clinical indicators that reflect current nutritional status rather than demographic variables. ### Explanation of Incorrect Options (Components of MUST) The MUST score is calculated based on three clinical parameters: 1. **Body Mass Index (BMI):** Points are assigned based on BMI (>20 = 0; 18.5–20 = 1; 10% = 2). 3. **Acute Disease Effect:** If the patient is acutely ill and there has been or is likely to be **no nutritional intake for >5 days**, 2 points are added. ### High-Yield Clinical Pearls for NEET-PG * **Target Population:** MUST is designed for **adults**. It is not validated for pediatric populations. * **The 5 Steps of MUST:** 1. Measure height/weight (BMI). 2. Note percentage of unplanned weight loss. 3. Establish acute disease effect. 4. Add scores to determine **Overall Risk of Malnutrition** (0 = Low, 1 = Medium, 2+ = High). 5. Develop a management plan based on the risk category. * **Alternative Tools:** Do not confuse MUST with the **Mini Nutritional Assessment (MNA)**, which is specifically designed for the **elderly** (age >65) and does include age-related physiological factors.

Q: According to WHO prevalence criteria for determining xerophthalmia problems, which of the following is true for an endemic area?

Night blindness in 1% of the population. **Explanation:** Vitamin A deficiency (VAD) is a significant public health problem in many developing countries. To identify areas where xerophthalmia is a public health priority, the WHO has established specific **prevalence criteria** for children aged 6–71 months (under 6 years). **1. Why Option D is Correct:** According to WHO, **Night Blindness (XN)** is considered a public health problem if its prevalence is **≥ 1%** in the target pediatric population. Night blindness is the earliest clinical symptom of VAD and serves as a sensitive indicator for community-based screening. **2. Analysis of Incorrect Options:** * **Option A:** The cutoff for **Bitot’s spots (X1B)** is **≥ 0.5%**, not 5%. A 5% prevalence would indicate an extremely severe epidemic. * **Option B:** **Conjunctival xerosis (X1A)** is no longer included in the WHO prevalence criteria because it is subjective and lacks diagnostic reliability in field surveys. * **Option C:** The criteria for **Corneal ulceration/Keratomalacia (X3A/X3B)** is **≥ 0.01%**. While 0.05% exceeds this, the standard threshold defined by WHO is 0.01%. Additionally, the term used in the criteria is "Corneal xerosis/ulceration," not just conjunctival ulcers. **3. High-Yield Facts for NEET-PG:** * **WHO Cut-off Points (Prevalence > these values = Public Health Problem):** * Night Blindness (XN): **> 1%** * Bitot's Spots (X1B): **> 0.5%** * Corneal Xerosis/Ulcer/Keratomalacia (X2/X3A/X3B): **> 0.01%** * Xerophthalmia-related Corneal Scars (XS): **> 0.05%** * Serum Retinol ( 5%** * **Prophylaxis:** Under the National Vitamin A Prophylaxis Program, the first dose (1 lakh IU) is given at 9 months (with Measles vaccine), followed by 2 lakh IU every 6 months until age 5 (Total 9 doses/17 lakh IU).

Q: Approximate caloric requirements of an infant at the age of 12 months would be?

700 Kcal. **Explanation:** The caloric requirement of an infant is primarily determined by their rapid growth rate and high basal metabolic rate. According to the **ICMR-NIN (2020) guidelines**, the energy requirements for infants are calculated based on body weight and age. **Why 700 Kcal is correct:** For an infant aged 6–12 months, the recommended dietary allowance (RDA) is approximately **80 kcal/kg/day**. At 12 months (1 year), an average healthy Indian child weighs approximately **8.5 to 9 kg**. * Calculation: 8.9 kg × 80 kcal ≈ **712 kcal/day**. Thus, **700 Kcal** is the closest approximate value for a one-year-old. **Analysis of Incorrect Options:** * **A. 500 Kcal:** This is insufficient for a 12-month-old. This value is closer to the requirement of a newborn or a 3-month-old infant (approx. 110 kcal/kg/day for a 4.5 kg baby). * **C. 1,000 Kcal:** This is the approximate requirement for a **toddler (1–3 years)**. As growth velocity slows down after the first year, the total calories increase due to weight gain, but the kcal/kg requirement drops. * **D. 1,200 Kcal:** This exceeds the requirement for an infant and is more appropriate for a child aged 3–4 years. **High-Yield Clinical Pearls for NEET-PG:** 1. **Energy Density:** In the first 6 months, requirements are higher per unit of body weight (**108 kcal/kg**) compared to 6–12 months (**80 kcal/kg**). 2. **Protein Requirement:** For an infant (6–12 months), the protein requirement is approximately **1.05 g/kg/day** (ICMR 2020). 3. **Growth Milestone:** A baby usually **triples** its birth weight by 12 months of age, necessitating this specific caloric intake. 4. **Rule of Thumb:** Total calories for a child can be roughly estimated by the formula: $1000 + (Age\ in\ years \times 100)$. For a 1-year-old, this equals 1100 Kcal, but for strict infancy (up to 12 months), the weight-based ICMR calculation (700-800 kcal) is preferred for exams.

Q: What is the daily requirement of iron during pregnancy?

35 mg. **Explanation:** The correct answer is **35 mg/day**. This value is based on the **ICMR-NIN (2020) Dietary Guidelines**, which are the current gold standard for NEET-PG questions regarding Indian nutritional requirements. **1. Why 35 mg is correct:** During pregnancy, iron requirements increase significantly to support the expansion of maternal red cell mass, the development of the placenta, and the growth of the fetus. The ICMR-NIN 2020 guidelines recommend **35 mg/day** for pregnant women (increased from the previous 21 mg/day for non-pregnant women). This ensures adequate iron stores to prevent maternal anemia and low birth weight. **2. Why other options are incorrect:** * **1 mg & 2 mg:** These values represent the *absorbed* iron required daily to replace basal losses in non-pregnant adults. Because dietary iron absorption is low (approx. 5–10%), the *oral intake* must be much higher than the physiological requirement. * **3 mg:** This is roughly the physiological requirement (absorbed iron) during the third trimester, but it does not represent the total daily *dietary* intake required. **3. High-Yield Clinical Pearls for NEET-PG:** * **IFA Supplementation (Anemia Mukt Bharat):** Pregnant women should receive **100 mg elemental iron** and **500 µg folic acid** daily for 180 days, starting from the second trimester (13 weeks). * **Lactation Requirement:** The iron requirement drops to **21 mg/day** during lactation (same as a non-pregnant woman) because menstruation is often suppressed (lactational amenorrhea). * **Adolescent Girls:** The requirement is **30-32 mg/day** depending on age. * **Absorption:** Vitamin C (Citrus fruits) enhances iron absorption, while phytates (cereals) and tannins (tea/coffee) inhibit it.

Question 1

According to the World Health Organization (WHO), what is the cutoff for anemia in adult males?

Accepted Answer

13 g/dL

Answer

12 g/dL

Answer

11 g/dL

Answer

10 g/dL

Question 2

Which of the following represents international food standards?

Accepted Answer

Codex Alimentarius standards

Answer

Bureau of Indian Standards (BIS) standards

Answer

Agricultural Mark (AgMark) standards

Answer

Prevention of Food Adulteration (PFA) standards

Question 3

The WHO Multicentre Growth Reference Study (MGRS) is a landmark study. Which of the following statements about the MGRS is NOT true?

Accepted Answer

It was conducted as a case-control study.

Answer

Participating countries included India, Brazil, Ghana, Oman, USA, and Norway.

Answer

The age group studied was 1-10 years.

Answer

A total of 8500 breastfed infants and young children participated.

Question 4

What is the principal impact indicator in Iodine Deficiency disorders?

Accepted Answer

Urinary Iodine Levels

Answer

Goitre assessment

Answer

Neonatal TSH levels

Answer

Salt Iodine Content

Question 5

Vegetable fat differs from animal oil in being:

Accepted Answer

Contains less fat-soluble vitamins

Answer

More saturated

Answer

More stable

Answer

More atherosclerotic

Question 6

Which of the following is not included in the Malnutrition Universal Screening Tool (MUST) for the assessment of risk of undernutrition?

Accepted Answer

Age

Answer

Body Mass Index (BMI)

Answer

Weight loss

Answer

Acute disease effect

Question 7

According to WHO prevalence criteria for determining xerophthalmia problems, which of the following is true for an endemic area?

Accepted Answer

Night blindness in 1% of the population

Answer

Bitot spot in 5% of the population under 6 years

Answer

Conjunctival xerosis in 1% of the population

Answer

Conjunctival ulcers in 0.05% of the population

Question 8

Approximate caloric requirements of an infant at the age of 12 months would be?

Accepted Answer

700 Kcal

Answer

500 Kcal

Answer

1,000 Kcal

Answer

1,200 Kcal

Question 9

An agricultural labourer presented with progressive spastic paralysis and was diagnosed with neurolathyrism. This condition results from the consumption of which of the following?

Accepted Answer

Beta-N-oxalyl-L-alpha, beta-diaminopropionic acid (BOAA)

Answer

Aflatoxin

Answer

Pyruvic acid

Answer

Sanguinarine

Question 10

What is the daily requirement of iron during pregnancy?

Accepted Answer

35 mg

Answer

1 mg

Answer

2 mg

Answer

3 mg

Nutrition and Health — MCQs

Nutrition and Health — MCQs

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