Water soluble vitamins

Question 1

What is the purpose of vitamins?

Answer 1

maintain health an homeostasis for growth and reproduction

Question 2

How are vitamins obtained?

Answer 2

in the diet through consumption of natural and fortified foods and supplements

Question 3

What may be required for vitamin transport?

Answer 3

carrier protein

Question 4

Which vitamins may be absorbed requiring conversion to active form?

Answer 4

provitamins

• Some vitamins are absorbed as an inactive pro vitamin or vitamin precursor and must be converted into active forms

Question 5

What can inhibit absorption of fat soluble vitamins?

Answer 5

Low fat diet

Question 6

Interaction with what may effect vitamin absorption?

Answer 6

Other dietary components

Question 7

What are the water soluble vitamins?

Answer 7

B vitamins
Thiamin (b1)
Riboflavin (b2)
Niacin (b3)
Biotin
Pantothenic acid
Vitamin b6
Folate
Vitamin b 12
Vitamin C

Question 8

What are the fat soluble vitamins?

Answer 8

Vitamin A, D, E and K

Question 9

What are fortified foods?

Answer 9

Fortified Foods have nutrients added that are not normally found in that food (eg vitamin D in milk)


Question 10

What are enriched foods?

Answer 10

Enriched foods have nutrients added back that have been removed during processing (enriched white flour)

Question 11

Supplements can contain a combination of what?

Answer 11

vitamins, minerals, herbs, amino acids, botanical extracts


Question 12

Why should caution be taken when taking supplements?

Answer 12

regulation is not a stringent as for pharmaceuticals


Question 13

Dietary supplements cannot replace foods consumed in the diet. T or F

Answer 13

t

Question 14

When can toxicity occur with dietary supplements?

Answer 14

if consumption goes beyond established UL


Question 15

What is the purpose of Health Canada’s Natural Health and Non Prescription Products Directorate?

Answer 15

regulate the use of natural health products and non prescription drugs

Question 16

What products will have an eight digit Natural Product Number (NPN) or Homeopathic Medicine Number (DIN-HM) on them?

Answer 16

Licensed products that have been reviewed and approved for use by Health Canada

Question 17

Licensed products that have been reviewed and approved for use by Health Canada; this license ensures what?

Answer 17

that any claims are supported by scientific evidence and it is produced using good manufacturing practice (GMP)


Question 18

Health claims are usually related to what?

Answer 18

dietary deficiency, not over consumption

Question 19

Approximately 40-90% of vitamins are absorbed where?

Answer 19

in the small intestine

Question 20

Fat soluble vitamins require what for absorption?

Answer 20

dietary lipids

Question 21

Water soluble vitamins may require what for absorption?

Answer 21

transport molecules or specific molecules in the GI tract

Question 22

Are fat soluble or water soluble more likely to be present at toxic levels?

Answer 22

Fat soluble

Question 23

Why are water soluble vitamins less likely to be present at toxic levels?

Answer 23

Their solubility in the blood allows them to be filtered out and excreted by the kidney when ingested in excess

Question 24

Are fat soluble or water soluble less stable and allow tissue depletion more readily?

Answer 24

Water soluble

Question 25

Most water soluble vitamins are converted to co enzymes that function in:

Answer 25

• Energy generation
• Hematopoiesis (blood cell formation)

Question 26

When do deficiencies first appear in water soluble vitamins?

Answer 26

in rapidly growing tissues