Nutrition and Health Practice Questions

Q: Lathyrism is due to:

Beta oxalyl amino acid. **Explanation:** **Lathyrism** is a non-progressive but permanent spastic paraplegia caused by the excessive consumption of **Khesari Dal (*Lathyrus sativus*)**. The disease is caused by the neurotoxin **BOAA (Beta-oxalyl-amino-alanine)**, also known as ODAP. This toxin acts as an excitatory neurotoxin, leading to the destruction of upper motor neurons in the spinal cord. It typically affects young males (15–45 years) during periods of famine when Khesari Dal becomes a staple food. **Analysis of Options:** * **Beta oxalyl amino acid (Correct):** This is the specific neurotoxin found in *Lathyrus sativus*. It is heat-stable but water-soluble. * **Aflatoxin:** Produced by *Aspergillus flavus*, this toxin contaminates stored grains (like groundnuts and maize) and is a major risk factor for **Hepatocellular Carcinoma**. * **Saccharin & Cyclamate:** These are artificial sweeteners. While historically linked to bladder cancer in high-dose rodent studies, they are not associated with Lathyrism. **High-Yield Clinical Pearls for NEET-PG:** 1. **Stages of Lathyrism:** Latent stage → No-stick stage → One-stick stage → Two-stick stage → Crawler stage. 2. **Prevention:** The safest method is to limit Khesari Dal intake to <1/3rd of the diet. 3. **Toxin Removal:** BOAA can be removed by **steeping** (soaking in hot water and draining) or **parboiling**. 4. **Legal Aspect:** The Prevention of Food Adulteration Act once banned its sale, though some states have recently lifted bans on specific varieties. 5. **Neurolathyrism vs. Osteolathyrism:** Human Lathyrism is primarily *neurolathyrism*; *osteolathyrism* (affecting bone/collagen) is usually seen in animal models.

Q: A 24-year-old primigravida weighing 57 kg with a hemoglobin of 11.0 gm% visits an antenatal clinic during the second trimester of pregnancy seeking advice on dietary intake. What should be her advised additional daily caloric intake?

None of the above. ### Explanation The correct answer is **None of the above** because the current nutritional guidelines for pregnancy in India have been updated significantly. **1. Why the correct answer is right:** According to the **ICMR-NIN (2020/2024) guidelines**, the Recommended Dietary Allowance (RDA) for energy is no longer a flat addition of 300 kcal as previously taught. The additional calorie requirement is now categorized by trimester: * **First Trimester:** 0 kcal/day (No additional intake required). * **Second Trimester:** **+350 kcal/day**. * **Third Trimester:** **+525 kcal/day**. Since the patient is in her **second trimester**, she requires an additional **350 kcal/day**. None of the provided options (300, 500, or 650) match this specific evidence-based recommendation. **2. Why the incorrect options are wrong:** * **Option A (300 Kcal):** This was the old recommendation (ICMR 2010) used for many years. It is now obsolete. * **Option B (500 Kcal):** This is the approximate additional requirement for a **lactating mother** (0–6 months), not a pregnant woman in the second trimester. * **Option C (650 Kcal):** This value does not correspond to any standard physiological stage in pregnancy or lactation. **3. High-Yield Clinical Pearls for NEET-PG:** * **Protein Requirements (ICMR 2020/24):** * 2nd Trimester: **+9.5 g/day** * 3rd Trimester: **+22.0 g/day** * **Iron & Folic Acid (IFA):** Under the *Anemia Mukt Bharat* strategy, pregnant women should receive **60 mg elemental iron and 500 µg folic acid** daily for 180 days, starting from the second trimester (13 weeks). * **Calcium:** The RDA for calcium during pregnancy is **1000 mg/day**.

Q: Which of the following is a preventable cause of blindness?

Vitamin A deficiency. **Explanation:** In community ophthalmology, causes of blindness are categorized based on the strategy required to address them. **Vitamin A deficiency (VAD)** is classified as a **preventable cause** because it can be entirely averted through primary prevention strategies, such as periodic Vitamin A supplementation (prophylaxis), dietary diversification, and nutrition education. VAD leads to Xerophthalmia, which, if left untreated, progresses to irreversible keratomalacia and blindness. **Analysis of Options:** * **Cataract (Option A):** This is the leading cause of **curable/avoidable blindness**. It cannot be prevented from occurring (as it is largely age-related), but vision can be restored through surgical intervention. * **Refractive Errors (Option C):** These are causes of **treatable/correctable blindness**. Like cataracts, they cannot be prevented, but the visual impairment can be corrected using spectacles, contact lenses, or refractive surgery. * **Retinal Dystrophies (Option D):** These are typically genetic conditions (e.g., Retinitis Pigmentosa) that are currently **non-preventable and largely untreatable**, leading to incurable blindness. **High-Yield Clinical Pearls for NEET-PG:** * **WHO Definition:** Blindness is defined as visual acuity <3/60 in the better eye with best possible correction. * **Vitamin A Prophylaxis Program (India):** 1st dose (1 lakh IU) at 9 months with Measles vaccine; subsequent doses (2 lakh IU) every 6 months up to age 5 (Total 9 doses/17 lakh IU). * **First Clinical Sign of VAD:** Conjunctival Xerosis (Bitot’s spots are the most specific *objective* sign). * **First Symptom of VAD:** Nyctalopia (Night blindness).

Q: Amount of fat is maximum in which type of milk?

Buffalo milk. **Explanation:** The fat content in milk varies significantly across species, primarily determined by the nutritional requirements of the offspring. **Buffalo milk** contains the highest concentration of fat among the common domestic sources, typically ranging from **6.5% to 8.0%**. This high fat content makes it more calorie-dense (approx. 100 kcal/100ml) compared to other types. **Analysis of Options:** * **Buffalo Milk (Correct):** Contains the highest fat (6.5–8%) and total solids. It is also richer in calcium and phosphorus but lacks carotene (converting it instead to Vitamin A), which gives it a characteristic white appearance. * **Cow Milk:** Contains approximately **3.5% to 4%** fat. It is rich in carotene, giving it a yellowish tinge. It is often preferred for infants after one year due to easier digestibility compared to buffalo milk. * **Human Milk:** Contains about **3.5% to 4.5%** fat. While the fat quantity is similar to cow milk, it is superior in quality, containing more polyunsaturated fatty acids and essential lipids for brain development. It is lower in protein but higher in lactose (7%) than animal milk. * **Goat Milk:** Contains about **3.5%** fat. Its fat globules are smaller, which theoretically makes it easier to digest, but it is deficient in folic acid, which can lead to "goat milk anemia" (megaloblastic anemia) if used as an exclusive source. **High-Yield Clinical Pearls for NEET-PG:** * **Energy Value:** Buffalo milk (~100 kcal/100ml) > Human milk (~70 kcal/100ml) > Cow milk (~65 kcal/100ml). * **Protein Content:** Buffalo milk has the highest protein (~4.3%), while Human milk has the lowest (~1.1%), making human milk less taxing on neonatal kidneys (lower renal solute load). * **Iron:** All milk types are poor sources of Iron. * **Vitamin C:** Human milk contains more Vitamin C than clear cow/buffalo milk.

Q: To define a health problem, what is the prevalence of corneal xerosis?

>0.01%. This question pertains to the **WHO criteria for assessing the public health significance of Vitamin A deficiency (VAD)** in a community. These indicators are high-yield for NEET-PG as they define the thresholds at which VAD becomes a significant public health problem among children aged 6–71 months. ### **Explanation of the Correct Answer** **Option C (>0.01%)** is correct. According to WHO, a health problem (epidemic) of Vitamin A deficiency is considered to exist in a community if the prevalence of **Corneal Xerosis (X2), Corneal Ulceration/Keratomalacia (X3), or Corneal Scars (XS)** is **greater than 0.01%**. Because corneal involvement represents the severe, irreversible stage of xerophthalmia, even a very low prevalence is indicative of a major nutritional crisis. ### **Analysis of Incorrect Options** * **Option A (>1%):** This is the threshold for **Night Blindness (X1N)**. If more than 1% of the vulnerable population has night blindness, it is a public health problem. * **Option B (>0.5%):** This is the threshold for **Bitot’s Spots (X1B)**. Bitot’s spots are the most common objective clinical sign used for field surveys. * **Option D (>0.05%):** This value is not a standard WHO threshold for clinical signs of xerophthalmia. ### **High-Yield Clinical Pearls for NEET-PG** To master this topic, remember the **WHO Minimum Prevalence Criteria** for VAD significance: 1. **Night Blindness (X1N):** > 1.0% 2. **Bitot's Spots (X1B):** > 0.5% 3. **Corneal Xerosis/Ulcer/Scar (X2/X3/XS):** > 0.01% 4. **Plasma Retinol ( 5.0% (Biochemical indicator) **Mnemonic:** "Night 1, Bitot 0.5, Cornea 0.01." * **X1N** is the earliest symptom. * **X1B** is the most frequent clinical sign. * **X3 (Keratomalacia)** is a medical emergency.

Q: Which indicator best reflects both acute and chronic malnutrition?

Low weight-for-age. **Explanation:** In pediatric nutrition assessment, anthropometric indices are used to differentiate between different types of growth failure. **Weight-for-age** is the correct answer because it is a composite indicator. Since weight is sensitive to both recent weight loss (acute) and long-term growth failure (chronic), a low weight-for-age can reflect either **wasting, stunting, or a combination of both.** **Analysis of Options:** * **Option A (Low height-for-age):** This is the hallmark of **Stunting**. It reflects **chronic (long-term) malnutrition** or recurrent illness. It does not typically reflect acute nutritional changes because height does not decrease during short-term starvation. * **Option B (Low weight-for-height):** This is the hallmark of **Wasting**. It reflects **acute (short-term) malnutrition** or significant recent weight loss (e.g., due to diarrhea or famine). * **Option C (Low height-for-weight):** This is not a standard clinical index used in the WHO or IAP growth monitoring protocols. **High-Yield Clinical Pearls for NEET-PG:** 1. **Waterlow’s Classification:** * Wasting = (Observed Weight / Weight for height) × 100 * Stunting = (Observed Height / Height for age) × 100 2. **Gomez Classification:** Uses **Weight-for-age** to grade malnutrition (Grade I: 75-90%, Grade II: 60-75%, Grade III: <60%). 3. **Underweight:** Defined as weight-for-age < -2 SD from the WHO Child Growth Standards median. 4. **Best Indicator of Recovery:** Weight-for-height is the most sensitive indicator to monitor the effectiveness of nutritional rehabilitation programs.

Q: What is the estimated daily caloric requirement for an adult male worker with moderate activity levels?

2730 Kcal/day. This question is based on the **ICMR-NIN (2020) Expert Group Report** on Nutrient Requirements for Indians. The caloric requirement for an adult male is categorized based on the intensity of physical activity: Sedentary, Moderate, and Heavy. ### **Explanation of the Correct Answer** **C. 2730 Kcal/day** is the correct RDA (Recommended Dietary Allowance) for an **adult male (Reference body weight: 65 kg) performing moderate activity**. Moderate activity includes occupations like fisherman, carpenters, or weavers. The calculation is based on the Estimated Energy Requirement (EER) needed to maintain energy balance for this specific activity level. ### **Analysis of Incorrect Options** * **A. 2320 Kcal/day:** This is the requirement for an adult male with **Sedentary activity** (e.g., office workers, teachers). * **B. 2230 Kcal/day:** This is the requirement for an **adult female** with **Moderate activity** (Reference weight: 55 kg). * **D. 3490 Kcal/day:** This is the requirement for an adult male performing **Heavy activity** (e.g., stone cutters, blacksmiths, mine workers). ### **High-Yield Clinical Pearls for NEET-PG** * **Reference Body Weight (2020 Update):** The reference weight for an Indian Adult Male is **65 kg** and for an Adult Female is **55 kg** (increased from the previous 60 kg and 50 kg respectively). * **Pregnancy:** There is **no additional** calorie requirement in the 1st trimester. Add **+350 kcal/day** in the 2nd trimester and **+525 kcal/day** in the 3rd trimester. * **Lactation:** Add **+600 kcal/day** (0-6 months) and **+520 kcal/day** (6-12 months). * **Protein Requirement:** The current recommendation is **0.83 g/kg body weight/day** for both adult males and females.

Q: Which vitamin is absent in eggs?

Vitamin C. **Explanation:** The correct answer is **Vitamin C**. Eggs are often described as a "complete food" because they contain almost all essential nutrients required for life; however, they are notably deficient in Vitamin C (Ascorbic acid). **1. Why Vitamin C is the correct answer:** Vitamin C is primarily found in citrus fruits and fresh vegetables. In the biological context of an egg, the developing embryo (chick) is capable of synthesizing its own Vitamin C from glucose in the liver and kidneys. Therefore, the egg does not need to store pre-formed Vitamin C, making it the only major vitamin absent in this food source. **2. Analysis of Incorrect Options:** * **Vitamin B1 (Thiamine):** Present in the egg yolk. It is essential for the carbohydrate metabolism of the developing embryo. * **Vitamin B6 (Pyridoxine):** Found in significant amounts in eggs, contributing to amino acid metabolism. * **Vitamin E (Tocopherol):** Eggs are a good source of fat-soluble vitamins (A, D, E, and K), which are concentrated in the lipid-rich egg yolk. **High-Yield NEET-PG Pearls:** * **The "Egg Rule":** Eggs contain all vitamins **EXCEPT Vitamin C**. * **Mineral Deficiency:** While rich in iron, the iron in eggs is bound to **phosvitin**, which inhibits its absorption. Eggs are also considered a poor source of **Calcium** (as most calcium is in the shell, not the edible portion). * **Reference Protein:** Egg protein is considered the "Standard Protein" (Biological Value = 100) against which all other proteins are compared. * **Avidin:** Raw egg whites contain avidin, which binds to **Biotin** (Vitamin B7), potentially leading to deficiency if consumed in large quantities.

Question 1

Lathyrism is due to:

Accepted Answer

Beta oxalyl amino acid

Answer

Aflatoxin

Answer

Saccharin

Answer

Cyclamate

Question 2

Which of the following diseases can prove fatal in combination with malnutrition among children under 5 years of age?

Accepted Answer

Measles

Answer

Anemia

Answer

Tetanus

Answer

Diarrhoea

Question 3

A 24-year-old primigravida weighing 57 kg with a hemoglobin of 11.0 gm% visits an antenatal clinic during the second trimester of pregnancy seeking advice on dietary intake. What should be her advised additional daily caloric intake?

Accepted Answer

None of the above

Answer

300 Kcal

Answer

500 Kcal

Answer

650 Kcal

Question 4

Height in cms by the cube root of body weight is known as which index?

Accepted Answer

Ponderal index

Answer

Quetlet index

Answer

Broca index

Answer

Corpulence index

Question 5

Which of the following is a preventable cause of blindness?

Accepted Answer

Vitamin A deficiency

Answer

Cataract

Answer

Refractive errors

Answer

Retinal dystrophies

Question 6

Amount of fat is maximum in which type of milk?

Accepted Answer

Buffalo milk

Answer

Cow milk

Answer

Human milk

Answer

Goat milk

Question 7

To define a health problem, what is the prevalence of corneal xerosis?

Accepted Answer

>0.01%

Answer

>1%

Answer

>0.5%

Answer

>0.05%

Question 8

Which indicator best reflects both acute and chronic malnutrition?

Accepted Answer

Low weight-for-age

Answer

Low height-for-age

Answer

Low weight-for-height

Answer

Low height-for-weight

Question 9

What is the estimated daily caloric requirement for an adult male worker with moderate activity levels?

Accepted Answer

2730 Kcal/day

Answer

2320 Kcal/day

Answer

2230 Kcal/day

Answer

3490 Kcal/day

Question 10

Which vitamin is absent in eggs?

Accepted Answer

Vitamin C

Answer

Vitamin B1

Answer

Vitamin B6

Answer

Vitamin E

Nutrition and Health — MCQs

Nutrition and Health — MCQs

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