Infant formula: Should I use tap or bottled water?
Is it safe to mix infant formula with tap water? I've read that too much fluoride can be harmful to infants.
- Barb / Minnesota
Answer
In 2006, the American Dental Association published interim guidelines suggesting that fluoridated tap water not be used to prepare infant formula.
Keep in mind that exposure to fluoride during infancy helps prevent tooth decay during childhood and beyond. That's why fluoride supplements are often recommended for infants who are exclusively breast-fed after age 6 months.
However, regularly mixing powdered or liquid infant formula concentrate with fluoridated water may increase the risk of a child developing faint white markings on the teeth — a sign of mild enamel fluorosis. This affects both baby teeth and permanent teeth. In children younger than 8 years old, combined fluoride exposure from all sources — water, food, toothpaste or other products — contributes to fluorosis.
If you use only nonfluoridated water — such as purified, deionized or distilled bottled water — to prepare your baby's formula, your baby's doctor may recommend fluoride supplements beginning at age 6 months.
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