Strict vegetarians are at risk of developing a vitamin B12 deficiency because ____

a. specific foods in their diet inhibit the absorption of vitamin B12
b. their diet causes increased excretion of the vitamin
c. only animal foods contain sufficient amounts of the vitamin
d. their diet increases the rate of use of the vitamin by their bodies
e. vitamin B12 is unavailable in fortified foods


c

Nutritional Science

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