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#1
By Ahmed Akber
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Medium
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Fact Checked
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27 Aug 2026
In a population consuming primarily starchy tubers, children show swelling and fatty livers. Which deficiency is most likely?
💡 Explanation:These symptoms describe Kwashiorkor, a form of malnutrition that occurs when there is sufficient calorie intake but a severe deficiency in protein.
#2
By Rabia Anum
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Hard
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Fact Checked
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25 Jul 2026
How do tannins in tea and coffee primarily impact the nutritional status of iron-deficient individuals?
💡 Explanation:Tannins are polyphenolic compounds that bind to non-heme iron (found in plant foods and supplements) during digestion, creating insoluble complexes that the body cannot absorb, thereby reducing iron bioavailability.
#3
By Rabia Anum
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Hard
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Fact Checked
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16 Jun 2026
Why does high phytate intake in cereal grains often lead to mineral deficiencies in some populations?
💡 Explanation:Phytates act as antinutrients by chelating essential minerals like iron, zinc, and calcium, forming insoluble salts that significantly reduce their intestinal absorption and bioavailability.
#4
By Rabia Anum
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Medium
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Fact Checked
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20 May 2026
Why do whole grains promote better metabolic health than refined grains?
💡 Explanation:Whole grains contain intact fiber which slows down the breakdown of carbohydrates into glucose. This prevents rapid insulin spikes, reducing the risk of metabolic syndromes and Type 2 diabetes.
#5
By Rabia Anum
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Hard
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Fact Checked
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20 Mar 2026
Which vitamin deficiency is characterized by the ‘four Ds’ (dermatitis, diarrhea, dementia, and death) and is historically linked to maize-heavy diets?
💡 Explanation:Pellagra is caused by a deficiency of Niacin (Vitamin B3). It was historically prevalent in regions where maize was the primary food source because maize is low in tryptophan and its niacin is chemically bound unless treated with alkali.
#6
By Kalsoom Tahir
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Medium
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Fact Checked
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17 Mar 2026
What is the primary objective of food biofortification in public health nutrition?
💡 Explanation:Biofortification is the process of increasing the density of vitamins and minerals in a crop through plant breeding or agronomic practices, ensuring that the food is more nutritious from the point of harvest.
#7
By Kalsoom Tahir
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Easy
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Fact Checked
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08 Feb 2026
What is the standard formula to calculate an individual’s Body Mass Index (BMI)?
💡 Explanation:The Body Mass Index (BMI) is a value used to broadly categorize a person based on tissue mass and height. It is defined as the body mass in kilograms (kg) divided by the square of the body height in meters (m²) (BMI = kg/m²).
#8
By Rabia Anum
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Hard
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Fact Checked
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29 Jan 2026
What nutrient significantly enhances the bioavailability and intestinal absorption of non-heme iron when consumed concurrently?
💡 Explanation:Vitamin C (Ascorbic Acid) is a powerful reducing agent. It converts ferric iron (Fe3+), the form most commonly found in plant-based (non-heme) sources, into the more soluble and readily absorbed ferrous iron (Fe2+) state in the acidic environment of the stomach, significantly increasing its uptake.
#9
By Ahmed Akber
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Medium
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Fact Checked
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29 Jan 2026
A perishable meal was left at 75°F (24°C) for four hours. What is the recommended public health action?
💡 Explanation:Perishable food should not be left in the 'Temperature Danger Zone' (40°F to 140°F or 4.4°C to 60°C) for more than two hours. At 75°F, which is within this zone, four hours is long enough for bacterial and toxin levels to become unsafe. Reheating will kill bacteria but not destroy all toxins produced, making immediate disposal necessary.
#10
By Kalsoom Tahir
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Medium
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Fact Checked
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27 Jan 2026
Vitamin B12 deficiency impairs DNA synthesis, primarily manifesting as which hematological condition?
💡 Explanation:Vitamin B12 (cobalamin) is a crucial cofactor for DNA synthesis. A deficiency leads to defective DNA production, which disproportionately affects rapidly dividing cells, such as red blood cell precursors in the bone marrow. This results in the formation of abnormally large, immature red blood cells (megaloblasts), a condition known as megaloblastic anemia. Iron-deficiency anemia is microcytic, hemolytic anemia is due to RBC destruction, and aplastic anemia is total bone marrow failure.
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