Fat Soluble Vitamins

Question 1

Fat soluble vitamins

Answer 1

ADEK

Question 2

Vitamin

Answer 2

Complex Organic Substance

• Required in smaller quantities than other nutrients (except trace elements)
• Essential
• Specific functions

Question 3

Non B-Complex

Answer 3

Vit C

Question 4

B Complex categories

Answer 4

1. Energy metabolism
2. Hematopoietic
3. Other

Question 5

Properties of fat soluble

Answer 5

• Accumulate in stores
• Require dietary fat absorption
• +/- blood transport system
• Potential toxicity with excess intake

Question 6

Micronutrient Deficiency Risk

Answer 6

• inadequate or monotonous diet
• Inc. nutrient requirements
• Inc. metabolic demands
• Malabsorption
• Interactions w/ pharmaceuticals

Question 7

Vit A

Answer 7

Fxn:

• Photochemical for vision (retinal signaling)
• Maintenance of conjunctiva and cornea

2 Types of food sources:

• Preformed retinyl palmitate from animal sources
• Precursor beta-carotene (yellow & green veggies)

Deficiency:

• Eyes: xeropthalmia, Bitot’s spots (foamy!), night blindness
• Epithelium: linings flat, dry, and keratinized

Question 8

Vit A Deficiency

Answer 8

• Eyes: xeropthalmia, Bitot’s spots (foamy!), night blindness
• Epithelium: linings flat, dry, and keratinized
• Immune impairment (dysregulation, effect depends upon infectious agent; GI and measles have worst effects)

Risk:

• Low vit A intake (autistic child with severely restricted diet)
• Protein energy malnutrition
• Very low fat intake
• Fat malabsorption

Question 9

Vit A Toxicity

Answer 9

NOT with beta-carotene
- only with preformed Vit A

Sx:

• Vomiting, increased ICP, headache
• bone pain, osteopenia
• liver damage hepatits –> fibrosis –> failure
• death
• birth defects

Question 10

Lab testing for Vit A

Answer 10

• Serum retinol level
• Remains nl until liver stores are exhausted
• Negative APR , so decreased with inflammation