CNS CNS Nutrition Across the Lifespan

Question 1

Which nutrient's adequate intake (AI) increases from 400 mcg/day to 600 mcg/day during pregnancy to prevent neural tube defects?

Accepted Answer

Folate (folic acid)

Answer

Folate supplementation of 600 mcg DFE/day during pregnancy reduces neural tube defect risk; the USPSTF recommends 400–800 mcg of folic acid starting before conception.

Question 2

The American Academy of Pediatrics recommends exclusive breastfeeding until what age, barring contraindications?

Accepted Answer

6 months

Answer

The AAP recommends exclusive breastfeeding for the first 6 months of life, with continued breastfeeding alongside complementary foods for at least 12 months and as long as desired.

Question 3

Which mineral's requirement increases dramatically in pregnancy from 18 mg/day to 27 mg/day due to expanded blood volume and fetal demands?

Accepted Answer

Iron

Answer

Iron needs increase in pregnancy to support hemoglobin synthesis for expanded maternal blood volume and to build fetal iron stores for the first 6 months of life.

Question 4

In healthy term infants, which vitamin is routinely administered as an intramuscular injection at birth to prevent hemorrhagic disease?

Accepted Answer

Vitamin K

Answer

Newborns have very low vitamin K stores and limited gut microbiota to synthesize it; IM vitamin K1 injection prevents vitamin K deficiency bleeding (VKDB).

Question 5

According to DRI guidelines, what is the recommended daily calcium intake for adolescents aged 9–18 years?

Accepted Answer

1,300 mg/day

Answer

Adolescents require 1,300 mg/day of calcium — the highest RDA across all age groups — because up to 90% of peak bone mass is accrued during this period.

CNS - Certified Nutrition Specialist Exam Practice Test

CNS - Certified Nutrition Specialist Exam Practice Test

CNS CNS Nutrition Across the Lifespan