Vitamins

Question 1

Water soluble vs Fat soluble Absorption, transport, storage, excretion, toxicity, requirements

Answer 1

Slide pic

Question 2

Factos effecting bioavailability

Answer 2

• efficiency of digestion/transit time
• previous nutrient intake
• other foods consumed simultaneously
• food preparation method
• source of the nutrient - synthetic or natural

Question 3

Thiamine - function

Answer 3

coenzyme of carb metabolism (energy yielding)

Question 4

wet vs dry beriberi

Answer 4

wet - odema, CVD failure

Dry - pain, tingling, loss of sensation

Question 5

Wernicke - encephalopty

Answer 5

alcohol related rain damage - language problems, walking difficulty

Question 6

Korsakoff syndrome

Answer 6

amnesia, inavility to learn, confabulation

Question 7

Thaimine foods

Answer 7

wholegrain cereals, fortified foods, legumes, sunflower seeds, pork

Question 8

Folate funciton

Answer 8

coenzyme for DNA syntehsis

Question 9

Folate deficiency

Answer 9

Macrosytic anaemia, poor growth, NTD e.g spina bifida

Question 10

Folate foods

Answer 10

GLF, legumes, seeds, liver, fortified cereals

Question 11

Cause of folate deficiency

Answer 11

low intake
reduced absorption
drugs
high alcohol intake
pregnancy (Increased requirement)

Question 12

Folate requirement pregnacy

Answer 12

800ug/day 4 weeks prior or 5000ug/day previous history

Question 13

Vitamin A - function

Answer 13

Vision night and colour, health of cornea, prevent drying of skin and eyes (maintains healthy mucous membranes)

Question 14

Keratinisation

Answer 14

bumpy skin, poor immune response

Question 15

Xerothalmia

Answer 15

night blindness - vit A deficincy

Question 16

Vit A toxicity - beta carotine and retinol

Answer 16

beta - overconsumption of food, ineffecient conversion - can go orange
Retinol - overconsumption from supplements e.g acne mediciation

Question 17

Vit A foods

Answer 17

retinol - eggs, dairy

Beta carotene - GLF, deep orange F and V

Question 18

Function of Vit D

Answer 18

increase absorption of calcium, phosporous, miantains optimum blood calcium and calcification of bone, regulates immune function and cell growht

Question 19

Vit D deficiency

Answer 19

Rickets in children, osetomalacia in adults

Question 20

Vit D - conversion to active form

Answer 20

7 dehydrocholesterol in skin, sun to vit D3, then in liver to 25-hydroxy vit D, kidney - 1-25 dihydroxy vit D - active form

Question 21

Food sources of Vit D

Answer 21

liver, fatty fish, salmon, milk, egg

Question 22

People who need supplements

Answer 22

Poor nutrient intake (elderly, dieters, vegeterians)
Increased nutreitn requirements (preg, children, lactation)
Increased metabolic demands (surgery, trauma)
Maldigestion and malabsorption
Drug nutrent interactins
Medical treatment interacitons