Micronutrients in Blood Health: B-complex vitamins

Question 1

what is folate?

Answer 1

naturally occurring form of B9 in foods

Question 2

what is folic acid

Answer 2

synthetic form of folate added to foods and supplements, active form is tetrahydrofolate

Question 3

Functions of folate

Answer 3

vital for DNA synthesis, create and maintain new cells, helps body use amino acids

Question 4

Good sources of folate

Answer 4

enriched grains, legumes, seeds, broccoli, asparagus, leafy greens

Question 5

RDA of folate

Answer 5

400 ug per day of dietary folate equivalents, preggos needs more

Question 6

folate toxicity and deficiency

Answer 6

UL is 1,000 ug per day of folic acid from fortified foods and supplements, too much folic acid may mask vit b12 anemia
folate deficiency can lead to macrocytic anemia

Question 7

Vitamin B12

Answer 7

Cobalamin,
dietary form: cyanocobalamin
active form: methylcobalamin
functions: 
-dna synthesis, 
-conversion of homocysteine to methionine
-maintenance of myelin sheath
-synthesis of new cells
-activates folate

Question 8

explain vitamin b12 absorption

Answer 8

requires intrinsic factor to be absorbed in small intestine:

Question 9

Are americans hitting rda?

Answer 9

ya we eat 4 per day, rda is 2.4, fortified foods and meat and dairy

Question 10

vit b12 toxicity?

Answer 10

no UI, deficiency can cause macrocytic anemia, pernicious anemia due to impaired intrinsic factor synthesis