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This question tests a core concept of human nutrition: Kwashiorkor classically presents with bilateral pitting oedema in the setting of severe protein malnutrition. The correct answer is Oedema.
Kwashiorkor classically presents with bilateral pitting oedema in the setting of severe protein malnutrition. Night blindness reflects vitamin A deficiency, goitre iodine deficiency and bleeding gums vitamin C deficiency.
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The human body requires six major nutrients: carbohydrates (energy source), proteins (growth and repair), fats (energy storage and insulation), vitamins (regulatory functions), minerals (bone and metabolic functions), and water. Each nutrient plays a specific role in maintaining health. A balanced diet includes all these nutrients in proper proportions.
Vitamins are organic compounds required in small quantities for normal body function. They are classified as fat-soluble (A, D, E, K) and water-soluble (B-complex, C). Vitamin A maintains vision, D helps calcium absorption, C builds immunity and prevents scurvy, B1 (thiamine) prevents beriberi, and B12 is essential for nerve function and blood formation.
Nutrient deficiency diseases include: Scurvy (Vitamin C deficiency), Rickets (Vitamin D deficiency in children), Beriberi (Vitamin B1/thiamine), Night blindness (Vitamin A), Anaemia (Iron or B12 deficiency), Goitre (Iodine deficiency), Kwashiorkor and Marasmus (protein-energy malnutrition), and Pellagra (Niacin/Vitamin B3 deficiency).
Carbohydrates provide immediate energy (4 kcal/g) and are found in rice, wheat, and fruits. Proteins are building blocks made of amino acids (4 kcal/g), essential for growth and repair, found in eggs, meat, legumes. Fats store energy (9 kcal/g), insulate organs, and aid vitamin absorption; found in oils, butter, nuts.
A balanced diet contains all essential nutrients — carbohydrates, proteins, fats, vitamins, minerals, and water — in the right proportions. It supports growth, maintains energy, boosts immunity, and prevents deficiency diseases. ICMR recommends a daily intake that includes cereals, pulses, vegetables, fruits, dairy, and adequate water.
