A seven-month-old infant who is fed reconstituted infant formula and complementary foods may be at risk of over-supplementation with which nutrient?

• A. Vitamin A
• B. Fluoride
• C. Vitamin E
• D. Iron

Answer: (B)

Fluoride intake in infancy is a balance because excess during tooth development can cause dental fluorosis. When a seven‑month‑old is receiving formula reconstituted with fluoridated water and is also starting complementary foods, the total fluoride exposure can exceed the recommended amount if fluoride supplements or additional fluoride‑containing products are used. The formula itself contributes fluoride, and adding more from supplements or certain foods can push intake over safe levels, making fluoride the nutrient most at risk for over-supplementation in this situation. Other nutrients listed—such as vitamin A, vitamin E, or iron—do not pose the same immediate risk of over-supplementation from this feeding pattern.