132 full-term healthy infants were studied for the first 18 months of life and parents were interviewed regarding their child's acceptance of solid foods. Results indicate that infants breast fed for less than 3 months showed a better acceptance of solid foods at 18 months than those breast fed for 6 months or more. It would appear that prolonged breast feeding increases resistance to weaning, and that later feeding problems can be reduced if chewable foods are introduced at an appropriate age.