Infants' brains developed better with breast milk

July 10, 2006|Carla K. Johnson, Associated Press

The tiniest premature infants fed with breast milk in the hospital did better on tests of mental development later in life than did others fed only formula, a new study has found.

The research is the first to show the benefits of breast milk for babies born weighing less than 2 pounds 3 ounces. With medical advances, hospitals are saving more of these babies, some born more than three months early.

For these infants, brain development that would normally occur in the womb during the third trimester of pregnancy must occur in the neonatal intensive care unit of a hospital, said study co-author Dr. Betty Vohr of Brown Medical School in Providence.

Ingredients in breast milk, particularly fatty acids, seem to help the brain develop properly, she said.

Feeding breast milk to the smallest, sickest babies on the edge of viability could save schools money in special education services later, Vohr said.

The study appears in the July issue of Pediatrics. A separate study in the same issue showed that children breast-fed longer than three months were less likely to become bed-wetters later .

Researchers tracked 1,035 extremely low-birthweight infants born at 15 hospitals. About three-quarters of the babies received at least some breast milk in the hospital. One-quarter received only formula. Even when the researchers took education and income into account, the breast milk babies scored higher on tests of mental development when they were 18 months old than the formula babies.

The more breast milk the babies consumed, the better they did on the tests. Breast milk had no effect on rates of cerebral palsy, blindness, or hearing problems.