What is the most common reason that vitamin B12 deficiency, or at least compromised B12 status, occurs in older adults?
a. Diets are frequently low in vitamin B12, since oral problems and financial difficulties limit meat intake and meats are the best dietary sources of B12.
b. Pernicious anemia is common in the elderly.
c. Their diets provide primarily synthetic forms of vitamin B12, which are less absorbable than the protein-bound form found naturally in foods.
d. The elderly have a higher incidence of bacterial overgrowth, which decreases secretion of hydrochloric acid.
e. None of the above
d
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The label of a protein supplement states that it contains a "fast-acting" protein. This terminology suggests that the supplement contains:
a. whey. b. casein. c. glucose. d. insulin.
Calbindin carries calcium into the enterocyte
Indicate whether the statement is true or false
The iron-carrying protein that assists in the transport of oxygen into muscle cells is
A) myoglobin. B) hematocrit. C) hemoglobin. D) hemosiderin.
By law, how often are the Dietary Guidelines for Americans reviewed and revised?
A) ?every year B) ?every 5 years C) ?every 10 years D) ?every 25 years