What is the best age to introduce solid food into an infant's diet?
a. 2 to 3 months
b. 4 to 6 months
c. When birth weight has tripled
d. When tooth eruption has started
ANS: B
Physiologically and developmentally, 4- to 6-month-old infants are in a transition period. The extrusion reflex has disappeared, and swallowing is a more coordinated process. In addition, the gastrointestinal tract has matured sufficiently to handle more complex nutrients and is less sensitive to potentially allergenic food. Infants of this age will try to help during feeding. Two to 3 months is too young. The extrusion reflex is strong, and the child will push food out with the tongue. No research indicates that the addition of solid food to a bottle has any benefit. Infant birth weight doubles at 1 year. Solid foods can be started earlier. Tooth eruption can facilitate biting and chewing; most infant foods do not require this ability.
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