Which statement about iron supplementation is correct?

• A. Iron supplementation is necessary for all newborns at birth.
• B. Iron supplementation is not relevant for most newborns.
• C. Iron supplementation should be avoided in all cases.
• D. Iron supplementation considerations are based on age and intake.

Answer: (D)

Iron supplementation decisions hinge on a baby's age and how they’re getting iron. Newborns start with iron stores that typically last several months, and if formula is iron-fortified, extra supplementation is usually not needed in the first half of the year. For exclusively breastfed infants, supplementation or the introduction of iron-rich foods is often recommended around 4–6 months, with adjustments for prematurity or low birth weight. This is why the statement that supplementation considerations are based on age and intake is the best answer: it captures the need to tailor guidance to the infant’s stage of development and their source of iron. The other options treat supplementation as universal at birth, irrelevant for most newborns, or something to avoid entirely, which doesn’t reflect how clinicians assess iron needs.