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Vitamins & Deficiency Diseases MCQs 2026

80 questions with detailed answers · 0 from past papers · 8 quiz batches available

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Read each question, think about the answer, then click Show Answer to reveal the correct option and explanation. Load 10 at a time so it stays manageable — perfect for one-topic study sessions on the bus or during a break.

Page 1 of 1Questions 1–10 of 80
  1. Q1hard

    What is the chemical name for Vitamin B5

    1. APantothenic acid
    2. BBiotin
    3. CFolic acid
    4. DNiacin
    💡 Explanation:

    Vitamin B5 is chemically known as Pantothenic acid.

  2. Q2medium

    Which vitamin, though not commonly deficient, plays a key role as an antioxidant protecting cell membranes from damage

    1. AVitamin B1
    2. BVitamin B6
    3. CVitamin E
    4. DVitamin B9
    💡 Explanation:

    Vitamin E functions as a fat-soluble antioxidant, protecting cell membranes from oxidative damage.

  3. Q3medium

    Which vitamin is essential for the maturation of red blood cells and can be deficient in strict vegetarians/vegans if unsupplemented

    1. AVitamin B12
    2. BVitamin C
    3. CVitamin D
    4. DVitamin K
    💡 Explanation:

    Vitamin B12 is primarily found in animal products, making strict vegans particularly susceptible to deficiency without supplementation.

  4. Q4easy

    Which vitamin is particularly important for immune function and wound healing, alongside its antioxidant role, commonly found in citrus fruits

    1. AVitamin A
    2. BVitamin C
    3. CVitamin D
    4. DVitamin K
    💡 Explanation:

    Vitamin C supports immune function, wound healing, and acts as an antioxidant.

  5. Q5easy

    A deficiency of which vitamin can lead to a condition characterized by swollen, bleeding gums and loosening teeth

    1. AVitamin A
    2. BVitamin B12
    3. CVitamin C
    4. DVitamin D
    💡 Explanation:

    Scurvy, caused by Vitamin C deficiency, notably causes swollen, bleeding gums and tooth loss.

  6. Q6hard

    Which vitamin deficiency is associated with dermatitis, diarrhea, and dementia, sometimes called the "three D's"

    1. AVitamin B1 deficiency
    2. BVitamin B3 deficiency (Pellagra)
    3. CVitamin B12 deficiency
    4. DVitamin C deficiency
    💡 Explanation:

    Pellagra, caused by Niacin (B3) deficiency, is classically associated with dermatitis, diarrhea, and dementia.

  7. Q7medium

    Which mineral is essential for proper nerve and muscle function, with deficiency linked to muscle cramps

    1. AIodine
    2. BPotassium
    3. CIron
    4. DZinc
    💡 Explanation:

    Potassium is crucial for proper nerve signaling and muscle function.

  8. Q8easy

    Which mineral deficiency commonly causes anemia, characterized by fatigue and weakness

    1. ACalcium
    2. BIron
    3. CZinc
    4. DPotassium
    💡 Explanation:

    Iron deficiency is the most common cause of anemia worldwide.

  9. Q9easy

    Which mineral is essential for strong bones and teeth, with deficiency linked to osteoporosis

    1. AIron
    2. BCalcium
    3. CIodine
    4. DSodium
    💡 Explanation:

    Calcium is essential for bone health; its deficiency can lead to osteoporosis.

  10. Q10easy

    Good dietary sources of Vitamin C include which of the following

    1. ACitrus fruits like oranges and lemons
    2. BRed meat
    3. CDairy products
    4. DGrains
    💡 Explanation:

    Citrus fruits are among the richest natural sources of Vitamin C.

  11. Q11medium

    Which group of vitamins includes A, D, E, and K, all sharing a common solubility property

    1. AWater-soluble vitamins
    2. BFat-soluble vitamins
    3. CMineral vitamins
    4. DTrace vitamins
    💡 Explanation:

    Vitamins A, D, E, and K are collectively known as fat-soluble vitamins.

  12. Q12medium

    Which vitamin deficiency is specifically associated with dry, scaly skin and poor wound healing, alongside vision problems

    1. AVitamin A
    2. BVitamin B1
    3. CVitamin B12
    4. DVitamin K
    💡 Explanation:

    Vitamin A deficiency causes both vision problems and skin issues, including dryness and poor healing.

  13. Q13easy

    Good dietary sources of Vitamin A include which of the following

    1. ACarrots and liver
    2. BCitrus fruits
    3. CFish and dairy
    4. DGreen leafy vegetables only
    💡 Explanation:

    Carrots and liver are rich sources of Vitamin A (as beta-carotene and retinol respectively).

  14. Q14easy

    Good dietary sources of Vitamin D include which of the following

    1. ASunlight exposure and fatty fish
    2. BCitrus fruits
    3. CGreen leafy vegetables
    4. DGrains
    💡 Explanation:

    Vitamin D is primarily obtained through sunlight exposure and dietary sources like fatty fish and egg yolks.

  15. Q15easy

    Which mineral deficiency is commonly associated with goiter, an enlargement of the thyroid gland

    1. AIron
    2. BIodine
    3. CCalcium
    4. DZinc
    💡 Explanation:

    Iodine deficiency causes goiter due to the thyroid gland's inability to produce sufficient hormones.

  16. Q16medium

    Which of the following vitamins is water-soluble

    1. AVitamin A
    2. BVitamin D
    3. CVitamin K
    4. DVitamin C
    💡 Explanation:

    Vitamin C is water-soluble, unlike the fat-soluble vitamins A, D, E, and K.

  17. Q17medium

    Deficiency of Vitamin D in adults primarily causes which condition

    1. ARickets
    2. BOsteomalacia
    3. CScurvy
    4. DBeriberi
    💡 Explanation:

    In adults, Vitamin D deficiency causes Osteomalacia, softening of the bones.

  18. Q18easy

    Which vitamin is essential for blood clotting

    1. AVitamin A
    2. BVitamin C
    3. CVitamin D
    4. DVitamin K
    💡 Explanation:

    Vitamin K plays a crucial role in blood clotting (coagulation).

  19. Q19easy

    Deficiency of Vitamin D primarily causes which disease in children

    1. AScurvy
    2. BRickets
    3. CBeriberi
    4. DPellagra
    💡 Explanation:

    Vitamin D deficiency in children causes Rickets, characterized by soft, weak bones.

  20. Q20easy

    Which vitamin is produced in the human skin upon exposure to sunlight

    1. AVitamin A
    2. BVitamin C
    3. CVitamin D
    4. DVitamin K
    💡 Explanation:

    Vitamin D is synthesized in the skin when exposed to ultraviolet sunlight.

  21. Q21easy

    Deficiency of Vitamin C causes which disease

    1. AScurvy
    2. BRickets
    3. CBeriberi
    4. DPellagra
    💡 Explanation:

    Vitamin C deficiency causes Scurvy, characterized by bleeding gums and poor wound healing.

  22. Q22medium

    Deficiency of Vitamin K primarily results in which problem

    1. AExcessive bleeding
    2. BNight blindness
    3. CBone softening
    4. DAnemia
    💡 Explanation:

    Vitamin K deficiency impairs blood clotting, leading to excessive bleeding.

  23. Q23medium

    Which vitamin is known as Cobalamin

    1. AVitamin B6
    2. BVitamin B9
    3. CVitamin B12
    4. DVitamin C
    💡 Explanation:

    Vitamin B12 is chemically known as Cobalamin.

  24. Q24medium

    Deficiency of Vitamin B12 primarily causes which condition

    1. APernicious anemia
    2. BScurvy
    3. CRickets
    4. DBeriberi
    💡 Explanation:

    Vitamin B12 deficiency leads to pernicious anemia and neurological problems.

  25. Q25medium

    Which vitamin is known as Folic Acid or Folate

    1. AVitamin B6
    2. BVitamin B9
    3. CVitamin B12
    4. DVitamin C
    💡 Explanation:

    Vitamin B9 is known as Folic Acid or Folate, essential during pregnancy for fetal development.

  26. Q26medium

    Deficiency of Folic Acid (Vitamin B9) during pregnancy is particularly linked to what condition in the fetus

    1. ANeural tube defects
    2. BNight blindness
    3. CRickets
    4. DScurvy
    💡 Explanation:

    Folic acid deficiency during pregnancy is strongly linked to neural tube defects like spina bifida.

  27. Q27easy

    Which vitamin is known as Ascorbic Acid

    1. AVitamin A
    2. BVitamin B12
    3. CVitamin C
    4. DVitamin D
    💡 Explanation:

    Vitamin C is chemically known as Ascorbic Acid.

  28. Q28medium

    Which vitamin is known as Tocopherol, acting as an antioxidant

    1. AVitamin A
    2. BVitamin E
    3. CVitamin C
    4. DVitamin K
    💡 Explanation:

    Vitamin E, known as Tocopherol, functions as an important antioxidant in the body.

  29. Q29easy

    Deficiency of Vitamin B1 (Thiamine) causes which disease

    1. AScurvy
    2. BBeriberi
    3. CPellagra
    4. DRickets
    💡 Explanation:

    Thiamine deficiency causes Beriberi, affecting the nervous and cardiovascular systems.

  30. Q30medium

    Which vitamin is known as Riboflavin

    1. AVitamin B1
    2. BVitamin B2
    3. CVitamin B3
    4. DVitamin B6
    💡 Explanation:

    Vitamin B2 is chemically known as Riboflavin.

  31. Q31medium

    Deficiency of Vitamin B2 (Riboflavin) primarily causes what condition

    1. ABeriberi
    2. BCracks at corners of the mouth (Ariboflavinosis)
    3. CScurvy
    4. DRickets
    💡 Explanation:

    Riboflavin deficiency commonly causes cracked lips, sore throat, and inflammation of the mouth.

  32. Q32easy

    Deficiency of Vitamin A primarily causes which condition

    1. AScurvy
    2. BNight blindness
    3. CRickets
    4. DBeriberi
    💡 Explanation:

    Vitamin A deficiency leads to night blindness and can cause more severe eye damage if prolonged.

  33. Q33easy

    Which vitamin is known as Thiamine

    1. AVitamin B1
    2. BVitamin B2
    3. CVitamin B6
    4. DVitamin B12
    💡 Explanation:

    Vitamin B1 is chemically known as Thiamine.

  34. Q34medium

    Which vitamin is known as Niacin

    1. AVitamin B2
    2. BVitamin B3
    3. CVitamin B6
    4. DVitamin B12
    💡 Explanation:

    Vitamin B3 is chemically known as Niacin.

  35. Q35medium

    Deficiency of Vitamin B3 (Niacin) causes which disease

    1. APellagra
    2. BScurvy
    3. CRickets
    4. DBeriberi
    💡 Explanation:

    Niacin deficiency causes Pellagra, characterized by dermatitis, diarrhea, and dementia.

  36. Q36easy

    Which vitamin is also known as Retinol

    1. AVitamin A
    2. BVitamin B1
    3. CVitamin C
    4. DVitamin D
    💡 Explanation:

    Vitamin A is chemically known as Retinol, important for vision and immune function.

  37. Q37medium

    Which vitamin is known as Pyridoxine

    1. AVitamin B3
    2. BVitamin B6
    3. CVitamin B9
    4. DVitamin B12
    💡 Explanation:

    Vitamin B6 is chemically known as Pyridoxine.

  38. Q38hard

    Deficiency of Biotin (Vitamin B7) can lead to which symptoms

    1. AHair loss and skin rashes
    2. BNight blindness
    3. CScurvy
    4. DRickets
    💡 Explanation:

    Biotin deficiency is associated with hair loss, skin rashes, and brittle nails.

  39. Q39hard

    What is the chemical name for Vitamin B7

    1. APantothenic acid
    2. BBiotin
    3. CCobalamin
    4. DRiboflavin
    💡 Explanation:

    Vitamin B7 is chemically known as Biotin.

  40. Q40medium

    Which of the following vitamins is fat-soluble

    1. AVitamin C
    2. BVitamin B12
    3. CVitamin D
    4. DVitamin B1
    💡 Explanation:

    Vitamin D, along with A, E, and K, is fat-soluble, while B-complex and C are water-soluble.

  41. Q41hard

    Which vitamin deficiency disease was historically prevalent among populations whose diet consisted mainly of corn (maize) without proper preparation

    1. AScurvy
    2. BPellagra
    3. CRickets
    4. DBeriberi
    💡 Explanation:

    Pellagra was historically common in populations relying heavily on untreated corn, which lacks accessible niacin.

  42. Q42hard

    Nixtamalization, a traditional food preparation process for corn, helps prevent which vitamin deficiency disease by making niacin more bioavailable

    1. AScurvy
    2. BPellagra
    3. CRickets
    4. DBeriberi
    💡 Explanation:

    Nixtamalization (treating corn with alkali) releases bound niacin, helping prevent pellagra in corn-dependent diets.

  43. Q43medium

    The recommended primary method for preventing Vitamin D deficiency in most healthy individuals is what

    1. ARegular, moderate sun exposure
    2. BAvoiding sunlight entirely
    3. COnly through dietary supplements
    4. DOnly through injections
    💡 Explanation:

    Regular, moderate sun exposure is generally the most natural and effective way for most people to maintain adequate Vitamin D levels.

  44. Q44medium

    Which vitamin, when deficient, is particularly associated with impaired night vision that can progress to complete blindness if untreated

    1. AVitamin A
    2. BVitamin B6
    3. CVitamin C
    4. DVitamin E
    💡 Explanation:

    Untreated Vitamin A deficiency can progress from night blindness to xerophthalmia and complete blindness.

  45. Q45easy

    Which of the following food sources is particularly rich in Vitamin B12, given its primary presence in animal products

    1. AMeat, eggs, and dairy
    2. BCitrus fruits
    3. CGreen leafy vegetables
    4. DWhole grains
    💡 Explanation:

    Vitamin B12 is found almost exclusively in animal products such as meat, eggs, and dairy.

  46. Q46medium

    Which vitamin plays an important role in converting food into energy and is found abundantly in whole grains, meat, and legumes

    1. AVitamin B1 (Thiamine)
    2. BVitamin C
    3. CVitamin D
    4. DVitamin K
    💡 Explanation:

    Thiamine (B1) is essential for converting carbohydrates into energy, found in whole grains, meat, and legumes.

  47. Q47medium

    Which vitamin, found abundantly in nuts, seeds, and vegetable oils, is known for its skin health and antioxidant benefits

    1. AVitamin B6
    2. BVitamin C
    3. CVitamin E
    4. DVitamin K
    💡 Explanation:

    Vitamin E, abundant in nuts and seeds, supports skin health through its antioxidant properties.

  48. Q48medium

    Which vitamin is particularly abundant in green leafy vegetables and plays a key role in blood clotting

    1. AVitamin A
    2. BVitamin B12
    3. CVitamin C
    4. DVitamin K
    💡 Explanation:

    Green leafy vegetables like spinach and kale are excellent sources of Vitamin K.

  49. Q49medium

    Which vitamin's primary dietary sources include eggs, dairy products, and fortified cereals, alongside sunlight synthesis

    1. AVitamin A
    2. BVitamin C
    3. CVitamin D
    4. DVitamin B9
    💡 Explanation:

    Vitamin D is found in eggs, dairy, and fortified foods, in addition to being synthesized through sunlight exposure.

  50. Q50hard

    Which scientist is credited with first isolating Vitamin C and later won a Nobel Prize for this and related work

    1. AAlbert Szent-Gyorgyi
    2. BJames Lind
    3. CCasimir Funk
    4. DChristiaan Eijkman
    💡 Explanation:

    Albert Szent-Gyorgyi isolated Vitamin C and received the Nobel Prize in Physiology or Medicine in 1937 for his work.

  51. Q51medium

    Which vitamin deficiency was historically common among populations relying heavily on polished white rice as a dietary staple

    1. AVitamin A deficiency
    2. BVitamin B1 (Thiamine) deficiency
    3. CVitamin C deficiency
    4. DVitamin D deficiency
    💡 Explanation:

    Polished rice lacks the thiamine-rich outer bran layer, historically causing widespread beriberi in rice-dependent populations.

  52. Q52medium

    Newborn infants are often given a Vitamin K injection shortly after birth for what reason

    1. ATo prevent bleeding disorders, since their natural levels are initially low
    2. BTo prevent scurvy
    3. CTo prevent rickets
    4. DTo boost immunity generally
    💡 Explanation:

    Newborns have naturally low Vitamin K levels, so a supplemental dose helps prevent potentially serious bleeding disorders.

  53. Q53hard

    Who is credited with coining the term "vitamine," later shortened to "vitamin"

    1. ACasimir Funk
    2. BJames Lind
    3. CChristiaan Eijkman
    4. DFrederick Hopkins
    💡 Explanation:

    Polish biochemist Casimir Funk coined the term "vitamine" in 1912 while researching nutritional deficiency diseases.

  54. Q54hard

    Which scientist's research on beriberi in chickens in the Dutch East Indies contributed significantly to the discovery of Vitamin B1

    1. AChristiaan Eijkman
    2. BJames Lind
    3. CCasimir Funk
    4. DAlbert Szent-Gyorgyi
    💡 Explanation:

    Christiaan Eijkman's research on beriberi in chickens fed polished rice led to the discovery of thiamine deficiency's role in the disease.

  55. Q55medium

    Which vitamin deficiency in the diet of pregnant women is specifically supplemented to help prevent birth defects of the brain and spine

    1. AVitamin B9 (Folic Acid)
    2. BVitamin B12
    3. CVitamin C
    4. DVitamin K
    💡 Explanation:

    Folic acid supplementation during pregnancy is specifically recommended to reduce the risk of neural tube defects.

  56. Q56hard

    Which severe eye condition, caused by prolonged Vitamin A deficiency, involves drying and damage to the cornea

    1. AXerophthalmia
    2. BGlaucoma
    3. CCataract
    4. DConjunctivitis only
    💡 Explanation:

    Xerophthalmia is a severe manifestation of Vitamin A deficiency, involving progressive corneal drying and damage.

  57. Q57hard

    Excessive intake of which vitamin can lead to toxicity causing liver damage, due to its fat-soluble nature and storage in the body

    1. AVitamin A
    2. BVitamin B1
    3. CVitamin C
    4. DVitamin B9
    💡 Explanation:

    Because Vitamin A is fat-soluble and stored in the liver, excessive intake can accumulate to toxic levels causing liver damage.

  58. Q58medium

    Which vitamin was historically linked to sailors on long voyages who lacked fresh fruits and vegetables

    1. AVitamin A
    2. BVitamin C
    3. CVitamin D
    4. DVitamin K
    💡 Explanation:

    Sailors historically suffered from scurvy due to Vitamin C deficiency from lack of fresh produce during long voyages.

  59. Q59hard

    Which scientist is credited with discovering that citrus fruits could prevent and cure scurvy among sailors

    1. AJames Lind
    2. BCasimir Funk
    3. CFrederick Hopkins
    4. DChristiaan Eijkman
    💡 Explanation:

    James Lind, a Scottish naval surgeon, conducted early clinical trials in 1747 demonstrating citrus fruits cured scurvy.

  60. Q60medium

    The World Health Organization has identified Vitamin A deficiency as a leading cause of what preventable condition in developing countries

    1. APreventable childhood blindness
    2. BAdult diabetes
    3. CHeart disease
    4. DObesity
    💡 Explanation:

    Vitamin A deficiency remains a leading cause of preventable blindness among children in developing countries, per WHO data.

  61. Q61hard

    Which of the following best describes megaloblastic anemia, associated with certain B-vitamin deficiencies

    1. ALarge, immature red blood cells due to impaired DNA synthesis
    2. BSmall red blood cells due to iron deficiency
    3. CExcess red blood cell production
    4. DAbnormally shaped white blood cells
    💡 Explanation:

    Megaloblastic anemia, linked to B12 or folate deficiency, involves the production of large, immature red blood cells.

  62. Q62medium

    Government fortification programs commonly add which vitamin to wheat flour to combat widespread deficiency, alongside iron

    1. AVitamin C
    2. BFolic Acid (Vitamin B9)
    3. CVitamin D
    4. DVitamin K
    💡 Explanation:

    Folic acid fortification of wheat flour is a common public health measure to reduce neural tube defects and address widespread deficiency.

  63. Q63medium

    Which of the following symptoms is most classically associated with early Vitamin C deficiency

    1. ABleeding gums and slow wound healing
    2. BNight blindness
    3. CMuscle cramps only
    4. DHair loss specifically
    💡 Explanation:

    Bleeding, swollen gums and impaired wound healing are hallmark early symptoms of Vitamin C deficiency (scurvy).

  64. Q64hard

    Which vitamin plays a key role in supporting the function of enzymes involved in amino acid metabolism

    1. AVitamin B6 (Pyridoxine)
    2. BVitamin C
    3. CVitamin D
    4. DVitamin K
    💡 Explanation:

    Vitamin B6 (Pyridoxine) is essential as a cofactor for numerous enzymes involved in amino acid metabolism.

  65. Q65medium

    Alcohol dependency is often associated with deficiency of which vitamin, due to poor diet and absorption issues

    1. AVitamin C
    2. BVitamin B1 (Thiamine)
    3. CVitamin K
    4. DVitamin A
    💡 Explanation:

    Chronic alcohol use is commonly associated with Thiamine (Vitamin B1) deficiency due to poor diet and impaired absorption.

  66. Q66hard

    Deficiency of which vitamin can specifically contribute to peripheral neuropathy, causing numbness and tingling in extremities

    1. AVitamin B6 or B12 deficiency (both can cause this)
    2. BVitamin C
    3. CVitamin A
    4. DVitamin K
    💡 Explanation:

    Both Vitamin B6 and B12 deficiencies can cause peripheral neuropathy, resulting in numbness and tingling sensations.

  67. Q67hard

    Which vitamin, if taken in excessive supplemental doses over time, is most associated with peripheral nerve damage as a toxicity risk

    1. AVitamin B6 (in very high doses)
    2. BVitamin C
    3. CVitamin B1
    4. DVitamin B9
    💡 Explanation:

    Ironically, while Vitamin B6 deficiency causes neuropathy, extremely excessive supplemental doses have also been linked to nerve damage.

  68. Q68medium

    Which vitamin deficiency-related disease was historically linked to certain populations relying heavily on polished grains without fortification

    1. ABeriberi (Vitamin B1 deficiency)
    2. BScurvy
    3. CRickets
    4. DNight blindness
    💡 Explanation:

    Beriberi was historically prevalent in populations relying on polished rice or grains stripped of thiamine-rich bran.

  69. Q69easy

    The condition rickets, caused by Vitamin D deficiency, primarily affects which part of the body

    1. AMuscles
    2. BBones
    3. CSkin
    4. DBlood
    💡 Explanation:

    Rickets primarily affects bone development, causing weak, soft, and deformed bones in children.

  70. Q70medium

    Which vitamin, essential for vision, is also important for immune function and cell growth

    1. AVitamin A
    2. BVitamin B1
    3. CVitamin C
    4. DVitamin E
    💡 Explanation:

    Vitamin A supports vision, immune function, and healthy cell growth and differentiation.

  71. Q71medium

    Which vitamin deficiency can impair the body's ability to absorb calcium properly, indirectly affecting bone health

    1. AVitamin C
    2. BVitamin D
    3. CVitamin B1
    4. DVitamin B6
    💡 Explanation:

    Vitamin D is essential for proper calcium absorption in the intestines, directly affecting bone health.

  72. Q72medium

    Strict vegan diets, without supplementation, put individuals at particular risk for deficiency of which vitamin

    1. AVitamin A
    2. BVitamin C
    3. CVitamin B12
    4. DVitamin K
    💡 Explanation:

    Vitamin B12 is found almost exclusively in animal products, making strict vegans at risk without supplementation.

  73. Q73medium

    Which vitamin's deficiency is more common in elderly individuals with limited sun exposure and dietary intake

    1. AVitamin C
    2. BVitamin D
    3. CVitamin B1
    4. DVitamin B9
    💡 Explanation:

    Vitamin D deficiency is common among elderly individuals due to reduced sun exposure and dietary intake.

  74. Q74medium

    A diet lacking fresh fruits and vegetables for an extended period is most likely to cause deficiency in which vitamin

    1. AVitamin B12
    2. BVitamin C
    3. CVitamin D
    4. DVitamin B1
    💡 Explanation:

    A diet lacking fresh produce is a classic risk factor for Vitamin C deficiency, leading to scurvy.

  75. Q75medium

    Which vitamin is particularly important for collagen synthesis, essential for skin and connective tissue health

    1. AVitamin A
    2. BVitamin C
    3. CVitamin D
    4. DVitamin K
    💡 Explanation:

    Vitamin C plays a critical role in collagen synthesis, essential for healthy skin, blood vessels, and connective tissue.

  76. Q76hard

    Which severe neurological condition, associated with thiamine deficiency, is particularly linked to chronic alcoholism

    1. AWernicke-Korsakoff syndrome
    2. BPellagra
    3. CScurvy
    4. DRickets
    💡 Explanation:

    Wernicke-Korsakoff syndrome, a severe neurological condition, is strongly linked to thiamine deficiency in chronic alcoholism.

  77. Q77medium

    What broad term is used to describe illness caused by insufficient intake of essential vitamins or minerals

    1. AMalnutrition (specifically micronutrient deficiency)
    2. BObesity
    3. CFood poisoning
    4. DAllergic reaction
    💡 Explanation:

    Deficiency diseases fall under the broader category of malnutrition, specifically related to micronutrient deficiency.

  78. Q78medium

    Which vitamin is added to milk in many countries specifically to help prevent rickets

    1. AVitamin A
    2. BVitamin C
    3. CVitamin D
    4. DVitamin B12
    💡 Explanation:

    Milk is commonly fortified with Vitamin D in many countries specifically to help prevent rickets in children.

  79. Q79hard

    Which vitamin, in excess, can be particularly dangerous during pregnancy, potentially causing birth defects

    1. AVitamin C (excess is low risk)
    2. BVitamin A (excess, especially as retinol)
    3. CVitamin B1
    4. DVitamin B9
    💡 Explanation:

    Excessive Vitamin A intake, particularly as preformed retinol, during pregnancy is associated with an increased risk of birth defects.

  80. Q80medium

    Which vitamin's deficiency can be assessed through symptoms like fatigue, pale skin, and shortness of breath, related to red blood cell issues

    1. AVitamin A
    2. BVitamin B12 (and B9)
    3. CVitamin D
    4. DVitamin K
    💡 Explanation:

    Both Vitamin B12 and B9 deficiencies can cause anemia-related symptoms like fatigue, pale skin, and shortness of breath.

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