Nutrition and Health — MCQs

Nutrition and Health Indian Medical PG Practice Questions and MCQs

Question 101: Which among the following is the earliest sign of vitamin-A deficiency?

A. Conjunctival xerosis (Correct Answer)
B. Nyctalopia
C. Retinopathy
D. Pain

Explanation: **Explanation:** The correct answer is **Conjunctival xerosis**. This question hinges on the distinction between the earliest **sign** (objective finding by a clinician) and the earliest **symptom** (subjective complaint by the patient). 1. **Why Conjunctival Xerosis is correct:** According to the WHO classification of Xerophthalmia, **Conjunctival xerosis (X1A)** is recognized as the **earliest clinical sign**. It is characterized by the loss of goblet cells, leading to a dry, non-wettable, "muddy" appearance of the conjunctiva. 2. **Why Nyctalopia (Night Blindness) is incorrect:** Nyctalopia (XN) is the **earliest clinical symptom** of Vitamin A deficiency. While it often precedes visible signs, it is a subjective complaint reported by the patient (or parents), not an objective sign observed by the doctor. 3. **Why Retinopathy is incorrect:** Vitamin A deficiency primarily affects the anterior segment (cornea/conjunctiva) and the rod cells. While "Fundus Xerophthalmicus" (XF) can occur in prolonged deficiency, it is a late-stage manifestation, not an early one. 4. **Why Pain is incorrect:** Early Vitamin A deficiency is typically painless. Pain usually occurs only in the advanced stages of **Keratomalacia (X3)** if secondary bacterial infection or corneal perforation occurs. **High-Yield Clinical Pearls for NEET-PG:** * **Earliest Symptom:** Night Blindness (Nyctalopia). * **Earliest Sign:** Conjunctival Xerosis. * **First Pathological Change:** Loss of Goblet cells (Histological). * **Bitot’s Spots (X1B):** Triangular, foamy, silvery-white patches on the bulbar conjunctiva; pathognomonic for Vitamin A deficiency in children. * **WHO Classification Sequence:** XN → X1A → X1B → X2 (Corneal xerosis) → X3A/X3B (Keratomalacia).

Question 102: Height is not included in which index of obesity?

A. Quetelet index
B. Broca index
C. Ponderal index
D. Corpulence index (Correct Answer)

Explanation: ### Explanation The correct answer is **Corpulence Index** (also known as the Ponderal Index in some older texts, but specifically distinct in clinical nutrition). In the context of standard obesity indices, the Corpulence Index is calculated as **Actual Weight / Desirable Weight**. Since it compares observed weight to a standard reference weight for a given individual, it does not directly incorporate height into its mathematical formula, unlike the other indices listed. #### Analysis of Options: * **Quetelet Index (BMI):** This is the most common index, calculated as **Weight (kg) / Height (m²)**. It directly uses height. * **Broca Index:** Used for estimating "Ideal Body Weight" (IBW). The formula is **Height (cm) – 100**. It is entirely dependent on height. * **Ponderal Index (Rohrer's Index):** Often used in pediatrics and neonatology, calculated as **Weight (kg) / Height (m³)**. It incorporates height to the third power. * **Corpulence Index:** This is a ratio of **Actual Weight / Desirable Weight**. While "desirable weight" is originally derived from height-weight tables (like the Metropolitan Life Insurance tables), the index itself is a ratio of two weight values. #### High-Yield Clinical Pearls for NEET-PG: * **Lorentz’s Formula:** A more refined version of the Broca index to calculate IBW: * *Males:* Height (cm) – 100 – [(Height – 150) / 4] * *Females:* Height (cm) – 100 – [(Height – 150) / 2] * **Best Indicator of Abdominal Obesity:** Waist-to-Hip Ratio (WHR). A ratio **>0.9 in men** and **>0.85 in women** indicates upper body obesity. * **Waist Circumference:** A simple measurement where **>102 cm in men** and **>88 cm in women** signifies increased metabolic risk. * **Dugdale’s Index:** Weight / Height$^{1.6}$ (used in children).

Question 103: What is the approximate number of people in the world with iodine deficiency?

A. 20 million (Correct Answer)
B. 12 million
C. 9 million
D. 6 million

Explanation: **Explanation:** The correct answer is **20 million (Option A)**. This figure specifically refers to the global burden of **preventable mental retardation** and severe brain damage caused by Iodine Deficiency Disorders (IDD). **1. Why Option A is Correct:** According to the World Health Organization (WHO) and global health estimates frequently cited in Community Medicine textbooks (like Park’s), while nearly 2 billion people worldwide have inadequate iodine intake, approximately **20 million** people suffer from preventable brain damage/mental retardation due to iodine deficiency. In the context of NEET-PG, this "20 million" figure is a classic high-yield statistic representing the most severe clinical manifestation of IDD on a global scale. **2. Why Other Options are Incorrect:** * **Options B, C, and D (12, 9, and 6 million):** These figures are underestimations. While the number of people with visible goiter is in the hundreds of millions (approx. 600+ million), the specific subset of those with permanent neurological impairment is significantly higher than these options suggest, stabilizing at the 20 million mark in standard epidemiological data. **3. High-Yield Clinical Pearls for NEET-PG:** * **Spectrum of IDD:** Iodine deficiency is the **world's single most significant cause of preventable mental retardation.** * **Indicator of Choice:** The most sensitive indicator for monitoring iodine status in a community is **Urinary Iodine Excretion (UIE)**. * **Neonatal Screening:** The best method for early detection of IDD in newborns is measuring **TSH levels** (Neonatal Hypothyroidism). * **Salt Iodization:** Under the National Iodine Deficiency Disorders Control Programme (NIDDCP), salt must have **30 ppm** of iodine at the production level and **15 ppm** at the consumer level. * **Goiter Rate:** A community is said to have endemic goiter if the prevalence is **>5%** among school-age children.

Question 104: Riboflavin is an important water-soluble vitamin. Cereals and pulses are relatively good sources of Riboflavin. What is the most common lesion associated with Riboflavin deficiency, which can also be used as an index of the nutritional status of a group of children?

A. Angular stomatitis (Correct Answer)
B. Follicular keratosis
C. Diarrhea
D. Dementia

Explanation: **Explanation:** **Riboflavin (Vitamin B2)** is a crucial water-soluble vitamin that acts as a precursor for coenzymes FAD and FMN, which are essential for energy metabolism. **Why Angular Stomatitis is correct:** Riboflavin deficiency primarily manifests as **mucocutaneous lesions**. **Angular stomatitis** (fissuring and inflammation at the corners of the mouth) is the most characteristic clinical sign. In community medicine and public health surveys, angular stomatitis is frequently used as a **sensitive index of the nutritional status** of a population, particularly among school-aged children, as it reflects a chronic low intake of B-complex vitamins. Other associated signs include cheilosis, glossitis (magenta tongue), and nasolabial seborrhea. **Analysis of Incorrect Options:** * **B. Follicular Keratosis:** This is a hallmark of **Vitamin A deficiency** (Phrynoderma) or Vitamin C deficiency. It presents as "toad skin" due to hyperkeratosis of hair follicles. * **C. Diarrhea & D. Dementia:** These are two of the "4 Ds" characteristic of **Pellagra**, which is caused by a deficiency of **Niacin (Vitamin B3)**. The full triad/tetrad includes Dermatitis, Diarrhea, Dementia, and Death. **High-Yield NEET-PG Pearls:** * **Magenta Tongue:** Pathognomonic for Riboflavin deficiency. * **Cheilosis:** Swelling and fissuring of the lips. * **Corneal Vascularization:** An early ocular sign of Riboflavin deficiency. * **Source:** Germinating pulses and fermented foods are rich sources of Riboflavin. It is also highly sensitive to light (photolabile), which is why milk should not be stored in transparent glass bottles.

Question 105: Which of the following is NOT a responsibility of the state regarding child welfare?

A. Empowering women (Correct Answer)
B. Protecting children against exploitation
C. Protecting children from abuse
D. Raising the level of nutrition

Explanation: ### Explanation This question focuses on the specific constitutional and legal mandates of the State regarding child welfare as outlined in the **National Policy for Children** and the **Directive Principles of State Policy (DPSP)** in the Indian Constitution. **Why "Empowering Women" is the correct answer:** While empowering women is a vital socio-economic goal and indirectly benefits children, it is categorized under **Gender Equality and Women’s Welfare**, not specifically under the "Rights of the Child" or "Child Welfare" mandates. In the context of public health and legal frameworks, child welfare responsibilities are strictly defined as actions taken directly for the protection and development of individuals under 18 years of age. **Analysis of Incorrect Options:** * **Protecting children against exploitation (Option B):** Under **Article 24** of the Constitution, the State is mandated to prohibit the employment of children in factories or hazardous occupations. * **Protecting children from abuse (Option C):** This is a core responsibility of the State, enforced through legislations like the **POCSO Act (2012)** and **JJ Act (2015)**, ensuring children grow up in a safe environment. * **Raising the level of nutrition (Option D):** Under **Article 47**, the State is duty-bound to raise the level of nutrition and the standard of living. This is the foundation for programs like **ICDS (Integrated Child Development Services)** and the **Mid-Day Meal Scheme**. **High-Yield Pearls for NEET-PG:** * **Article 24:** Prohibition of child labor (Hazardous industries). * **Article 39(f):** Directs the State to ensure children are given opportunities to develop in a healthy manner and protected against exploitation. * **Article 45:** Provision for early childhood care and education (ECCE) for children below 6 years. * **Article 47:** Primary duty of the State to improve public health and nutrition.

Question 106: Dental fluorosis is best seen in which teeth?

A. Central and lateral incisors
B. Central incisors and first molars (Correct Answer)
C. First and second molars
D. Canines

Explanation: **Explanation:** Dental fluorosis is a developmental disturbance of dental enamel caused by the chronic ingestion of high concentrations of fluoride (typically >1.5 mg/L in drinking water) during the period of tooth formation. **Why Option B is Correct:** The severity and distribution of dental fluorosis depend on the **timing of tooth calcification**. The permanent teeth most frequently and severely affected are those that undergo mineralization during the first two years of life. The **central incisors** and **first molars** begin their calcification process at or shortly after birth. Consequently, they are exposed to fluoride for the longest duration during their critical developmental window, making them the primary clinical markers for dental fluorosis. **Analysis of Incorrect Options:** * **Option A:** While lateral incisors are often affected, they begin calcification slightly later than central incisors and first molars, making them less "characteristic" as the primary site. * **Option C:** Second molars begin calcification much later (around 2.5 to 3 years of age). By this time, the window for the most severe fluorotic damage has often passed compared to the first molars. * **Option D:** Canines also calcify later than the central incisors and first molars, usually starting around 4–5 months of age, and are less consistently affected in early-stage exposure. **High-Yield NEET-PG Pearls:** * **Safe Limit:** The optimum fluoride level in drinking water is **0.5–0.8 mg/L**. * **Dental Fluorosis:** Occurs at levels **>1.5 mg/L**. It is characterized by "mottling" of enamel. * **Skeletal Fluorosis:** Occurs with prolonged exposure at levels **>3–6 mg/L**. * **Genu Valgum:** Also known as "Knock-knees," this is a characteristic manifestation of fluorosis seen in the South Indian endemic belts (Nalgonda technique is used for defluoridation). * **Dean’s Index:** Used to grade the severity of dental fluorosis (from Questionable to Severe).

Question 107: Waterlow's classification is used for assessing which of the following?

A. Protein energy malnutrition (Correct Answer)
B. Low birth weight
C. Xerophthalmia
D. Nutritional anemia

Explanation: **Explanation:** **Waterlow’s classification** is a widely used method for assessing the severity of **Protein-Energy Malnutrition (PEM)** in children. Unlike the Gomez classification, which only considers weight-for-age, Waterlow’s system utilizes two distinct parameters to differentiate between acute and chronic malnutrition: 1. **Weight-for-Height:** Indicates "Wasting" (Acute malnutrition). 2. **Height-for-Age:** Indicates "Stunting" (Chronic malnutrition). By using these indices, clinicians can determine if a child is currently suffering from a deficit (wasted) or has suffered from long-term nutritional deprivation (stunted). **Analysis of Incorrect Options:** * **B. Low birth weight:** This is defined simply as a birth weight of less than 2.5 kg, regardless of gestational age. It is not assessed via Waterlow’s criteria. * **C. Xerophthalmia:** This refers to Vitamin A deficiency. Assessment involves the WHO clinical stages (X1A to X3B) and Bitot’s spots, not anthropometric indices. * **D. Nutritional anemia:** This is typically assessed via hemoglobin levels (e.g., <11 g/dL in children) and peripheral blood smears, not growth charts. **High-Yield Clinical Pearls for NEET-PG:** * **Wasting (Weight-for-Height):** Most sensitive indicator of **recent/acute** nutritional stress. * **Stunting (Height-for-Age):** Indicator of **long-term/chronic** malnutrition. * **Gomez Classification:** Uses **Weight-for-Age** only (Reference: 50th percentile of Harvard standards). * **Wellcome Trust Classification:** Uses Weight-for-Age + presence/absence of **Oedema** to differentiate Kwashiorkor from Marasmus. * **IAP Classification:** The most commonly used classification in India, based on Weight-for-Age.

Question 108: What device is used by health workers to assess the nutritional status of children under 5 years of age?

A. Harpenden callipers
B. Shakir's tape (Correct Answer)
C. Orchidometer
D. Infantometer

Explanation: ### Explanation The correct answer is **Shakir’s tape**. **1. Why Shakir’s Tape is Correct:** Shakir’s tape is a simple, non-stretchable tape used to measure the **Mid-Upper Arm Circumference (MUAC)** in children aged 1 to 5 years. It is a color-coded screening tool designed for field use by health workers to quickly assess nutritional status: * **Green (>13.5 cm):** Satisfactory nutritional status. * **Yellow (12.5 – 13.5 cm):** Borderline/Possible malnutrition. * **Red (<12.5 cm):** Severe Malnutrition (specifically identifies wasting). * *Note:* In modern WHO guidelines, a MUAC **<11.5 cm** is the cutoff for Severe Acute Malnutrition (SAM). **2. Analysis of Incorrect Options:** * **A. Harpenden Callipers:** These are used to measure **skinfold thickness** (usually over the triceps) to estimate total body fat percentage. While used in nutrition research, they are not the primary tool for routine field screening by health workers. * **C. Orchidometer:** This is a clinical tool (a string of graded beads) used to measure **testicular volume**, primarily to assess pubertal development or hypogonadism. * **D. Infantometer:** This device is used to measure the **recumbent length** of infants and children under 2 years of age (or those unable to stand). While it assesses growth, Shakir’s tape is the specific tool for rapid nutritional screening via MUAC. **3. High-Yield Clinical Pearls for NEET-PG:** * **MUAC** is relatively constant between ages 1 and 5, making it an age-independent indicator of malnutrition in this bracket. * **Quac Stick:** Another field tool that uses a height-to-MUAC ratio to assess nutritional status. * **Road to Health Chart (Growth Chart):** Uses **Weight-for-Age** as the primary parameter for longitudinal monitoring. * **Stunting** (Chronic malnutrition) is measured by **Height-for-Age**, while **Wasting** (Acute malnutrition) is measured by **Weight-for-Height**.

Question 109: Which of the following contains the highest quantity of vitamin C?

A. Orange
B. Lemon
C. Indian gooseberry (Correct Answer)
D. Grapes

Explanation: **Explanation:** The correct answer is **Indian gooseberry (Amla)**. This question tests the knowledge of dietary sources of Vitamin C (Ascorbic acid), a water-soluble vitamin essential for collagen synthesis and antioxidant defense. **Why Indian Gooseberry is correct:** Indian gooseberry is one of the richest natural sources of Vitamin C. It contains approximately **600 mg of Vitamin C per 100 g** of edible portion. This concentration is significantly higher than that found in most other citrus fruits. **Analysis of Incorrect Options:** * **Orange & Lemon:** While these are classic examples of citrus fruits rich in Vitamin C, their content is much lower than Amla. Oranges contain about **30–50 mg/100 g**, and Lemons contain about **40–50 mg/100 g**. * **Grapes:** These contain relatively low amounts of Vitamin C, approximately **10 mg/100 g**, making them the poorest source among the given options. **High-Yield Clinical Pearls for NEET-PG:** * **Richest Source:** The absolute richest source of Vitamin C is the **Barbados cherry** (approx. 1600 mg/100 g), but among common Indian foods, **Amla** is the highest. * **Stability:** Vitamin C is the most heat-labile vitamin; it is easily destroyed by cooking or canning. * **Deficiency:** Leads to **Scurvy**, characterized by "corkscrew hair," perifollicular hemorrhages, and swollen, bleeding gums. * **Function:** It aids in the absorption of **non-heme iron** by converting ferric iron ($Fe^{3+}$) to ferrous iron ($Fe^{2+}$). * **Daily Requirement:** As per ICMR (2020), the RDA for an adult male/female is **80 mg/day** and **65 mg/day**, respectively.

Question 110: What are the recommended daily requirements of iron and folic acid for children aged 6 months to 10 years?

A. 20 mg elemental iron and 100 microgram folic acid (Correct Answer)
B. 100 mg elemental iron and 500 microgram folic acid
C. 60 mg elemental iron and 500 microgram folic acid
D. 100 mg elemental iron and 1000 microgram folic acid

Explanation: **Explanation:** The correct answer is **Option A**. This dosage is based on the guidelines provided by the **Anemia Mukt Bharat (AMB)** strategy (formerly the National Iron Plus Initiative), which is a high-yield topic for NEET-PG. **1. Why Option A is correct:** For children aged **6 months to 59 months** (5 years), the recommendation is **20 mg of elemental iron and 100 mcg of folic acid** bi-weekly. For children aged **5 to 9 years**, the dosage remains the same (20 mg iron + 100 mcg folic acid) but is administered **weekly**. This dosage is designed to prevent nutritional anemia while remaining safe for pediatric physiology. **2. Why other options are incorrect:** * **Option B (100 mg Iron / 500 mcg Folic Acid):** This is the prophylactic dose for **Pregnant and Lactating women** (1 tablet daily for 180 days). * **Option C (60 mg Iron / 500 mcg Folic Acid):** This is the weekly dose recommended for **Adolescents (10–19 years)** and women of reproductive age. * **Option D:** This exceeds the standard prophylactic guidelines and is not part of the national public health schedule for any specific age group. **3. High-Yield Clinical Pearls for NEET-PG:** * **Formulation:** For children <5 years, iron is given as a **syrup** (1 ml = 20 mg iron); for 5–9 years, it is a **pink enteric-coated tablet**. * **Adolescents (WIFS):** Blue tablet (60 mg iron + 500 mcg folic acid). * **Pregnant Women:** Red tablet (100 mg iron + 500 mcg folic acid). * **Deworming:** Always remember the "Plus" in Iron Plus Initiative—**Albendazole** (400 mg) is given twice a year (bi-annually) for children >2 years to manage helminth-induced anemia.

Practice by Chapter

Basic Nutritional Requirements

Practice Questions

Assessment of Nutritional Status

Practice Questions

Protein-Energy Malnutrition

Practice Questions

Micronutrient Deficiencies

Practice Questions

Nutritional Programs in India

Practice Questions

Dietary Guidelines

Practice Questions

Food Safety and Security

Practice Questions

Diet and Non-Communicable Diseases

Practice Questions

Nutrition in Pregnancy and Lactation

Practice Questions

Infant and Young Child Nutrition

Practice Questions

Nutrition in Emergencies

Practice Questions

Food Fortification and Supplementation

Practice Questions

Want unlimited practice?

Get full access to all questions, explanations, and performance tracking.

Start For Free