How do we know that folate fortification has improved the biochemical folate status of Americans?
A) More folate is being consumed.
B) More Americans are meeting recommendations for folate intakes.
C) There is a decline in NTDs.
D) RBC folate levels have increased.
Question 2
Nutrients can be used to compensate for some gaps in our DNA. For example:
A) Individuals with a change in the base sequence for the phenylalanine hydroxylase gene can correct the sequence of bases by eating a lot of phenylalanine.
B) Obese individuals can lose body weight by eating fewer calories than they expend.
C) Omega-3 fatty acids can upregulate genes encoding for fat oxidation.
D) Individuals with a polymorphism that decreases activity of a folate-metabolizing enzyme, methylene tetrahydrofolate reductase, may have more elevated plasma homocysteine than those with a normal enzyme while more folate intake can normalize plasma homocysteine for those with this polymorphism.
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