Untitled Flashcards Set

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Fat-Soluble vs. Water-Soluble Vitamins

Q: What are the main differences between fat-soluble and water-soluble vitamins?
A:

  • Fat-Soluble: Stored in fat tissues; require fat for absorption; can be toxic in excess (Vitamins A, D, E, K).

  • Water-Soluble: Not stored in the body; excess excreted in urine; needed more frequently (B-complex, Vitamin C).


Fat-Soluble Vitamins (A, D, E, K)

Vitamin A

Q: What are the roles of Vitamin A?
A: Vision (retinal function), immune health, cell growth, reproduction, skin health.

Q: What are food sources of Vitamin A?
A: Liver, eggs, dairy, carrots, sweet potatoes, leafy greens.

Q: What is the precursor of Vitamin A?
A: Beta-carotene (from plant sources).

Q: What happens with Vitamin A deficiency?
A: Night blindness, weakened immunity, dry skin.

Q: What are the effects of Vitamin A toxicity?
A: Liver damage, birth defects, bone pain.


Vitamin D

Q: What are the roles of Vitamin D?
A: Bone health (calcium absorption), immune function, muscle function.

Q: What are sources of Vitamin D?
A: Sunlight, fortified milk, fish, egg yolks.

Q: What happens with Vitamin D deficiency?
A: Rickets (children), osteomalacia (adults), weak bones.

Q: What happens with Vitamin D toxicity?
A: Hypercalcemia (too much calcium), kidney damage.


Vitamin E

Q: What are the roles of Vitamin E?
A: Antioxidant, protects cell membranes, supports immune function.

Q: What are food sources of Vitamin E?
A: Nuts, seeds, vegetable oils, leafy greens.

Q: What happens with Vitamin E deficiency?
A: Nerve damage, muscle weakness, vision problems.

Q: What happens with Vitamin E toxicity?
A: Increased bleeding risk.


Vitamin K

Q: What are the roles of Vitamin K?
A: Blood clotting, bone health.

Q: What are food sources of Vitamin K?
A: Leafy greens, broccoli, soybeans.

Q: What happens with Vitamin K deficiency?
A: Excessive bleeding, weak bones.

Q: What happens with Vitamin K toxicity?
A: Rare, but can interfere with blood thinners.


Water-Soluble Vitamins (B Vitamins & Vitamin C)

Vitamin C

Q: What are the roles of Vitamin C?
A: Antioxidant, collagen synthesis, immune support, iron absorption.

Q: What are food sources of Vitamin C?
A: Citrus fruits, peppers, strawberries, broccoli.

Q: What happens with Vitamin C deficiency?
A: Scurvy (bleeding gums, weak immunity, fatigue).

Q: What happens with Vitamin C toxicity?
A: Stomach cramps, kidney stones.


B Vitamins & Their Roles in Metabolism

Q: What are the collective roles of B vitamins?
A: Energy metabolism, red blood cell formation, nervous system function.

Q: What happens with B vitamin deficiencies?
A: Fatigue, anemia, nerve damage, skin disorders.


The 8 B Vitamins
  1. B1 (Thiamin)

    • Role: Energy production, nerve function.

    • Sources: Whole grains, pork, legumes.

    • Deficiency: Beriberi (weak muscles, nerve issues).

    • Toxicity: Rare.

  2. B2 (Riboflavin)

    • Role: Energy metabolism, skin health.

    • Sources: Dairy, eggs, leafy greens.

    • Deficiency: Cracked lips, sore throat.

    • Toxicity: Rare.

  3. B3 (Niacin)

    • Role: Energy production, skin health, lowers cholesterol.

    • Sources: Meat, fish, nuts.

    • Deficiency: Pellagra (diarrhea, dementia, dermatitis).

    • Toxicity: Flushing, liver damage.

  4. B5 (Pantothenic Acid)

    • Role: Fatty acid metabolism.

    • Sources: Whole grains, avocados.

    • Deficiency: Rare (fatigue, headaches).

    • Toxicity: Rare.

  5. B6 (Pyridoxine)

    • Role: Amino acid metabolism, brain function.

    • Sources: Bananas, poultry, potatoes.

    • Deficiency: Irritability, depression.

    • Toxicity: Nerve damage.

  6. B7 (Biotin)

    • Role: Hair, skin, nails, metabolism.

    • Sources: Eggs, nuts.

    • Deficiency: Hair loss, skin issues.

    • Toxicity: Rare.

  7. B9 (Folate)

    • Role: DNA synthesis, cell growth.

    • Sources: Leafy greens, legumes.

    • Deficiency: Neural tube defects, anemia.

    • Toxicity: Can mask B12 deficiency.

  8. B12 (Cobalamin)

    • Role: Nerve function, red blood cell formation.

    • Sources: Animal products.

    • Deficiency: Anemia, nerve damage.

    • Toxicity: Rare.


Meeting Vitamin Needs & Supplement Debate

Q: How can you choose foods to meet vitamin needs?
A: Eat a variety of fruits, vegetables, whole grains, lean proteins, and dairy.

Q: Arguments for taking vitamin supplements?
A: Helps with deficiencies, supports restrictive diets, benefits certain medical conditions.

Q: Arguments against taking vitamin supplements?
A: Risk of toxicity, expensive, not necessary with a balanced diet.


Water, Electrolytes, and Minerals

Q: Why is water balance important?
A: Maintains temperature, transports nutrients, removes waste.

Q: What is electrolyte balance?
A: Proper sodium, potassium, and chloride levels to regulate hydration.

Q: What is acid-base balance?
A: The body's way of maintaining pH for normal function.


Major Minerals & Their Functions

  1. Calcium - Bone health (Milk, cheese, leafy greens).

  2. Phosphorus - Bone, teeth, ATP production (Meat, dairy).

  3. Potassium - Muscle function, BP regulation (Bananas, potatoes).

  4. Sulfur - Protein synthesis (Meat, eggs).

  5. Sodium - Fluid balance (Salt, processed foods).

  6. Chloride - Digestive health (Salt, seaweed).

  7. Magnesium - Muscle, nerve function (Nuts, dark chocolate).


Trace Minerals & Their Functions

  1. Iron - Oxygen transport (Red meat, spinach).

  2. Zinc - Immune support (Meat, nuts).

  3. Copper - Iron metabolism (Shellfish, nuts).

  4. Manganese - Bone health (Nuts, whole grains).

  5. Iodine - Thyroid function (Salt, fish).

  6. Selenium - Antioxidant (Brazil nuts, seafood).

  7. Fluoride - Dental health (Water, tea).

  8. Chromium - Glucose metabolism (Whole grains, broccoli).

  9. Molybdenum - Enzyme function (Legumes, grains).


Osteoporosis Prevention

  • Consume calcium & vitamin D

  • Engage in weight-bearing exercises

  • Avoid smoking & excessive alcohol

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