Music of Mozart Soothes the Preemie Baby

Dec. 9 -- MONDAY, Dec. 7 (HealthDay News) -- Could the music of the 18th century classical genius Wolfgang Amadeus Mozart help tiny infants born today?

Yes, suggests an Israeli study that found that listening for just 30 minutes a day helped premature babies use less energy, which may help them grow faster.

"Within 10 minutes of listening to Mozart music, healthy infants [born prematurely] had a 10 percent to 13 percent reduction of their resting energy expenditure," the study authors wrote. "We speculate that this effect of music on resting energy expenditure might explain, in part, the improved weight gain that results from this Mozart effect."

The findings were published online Monday in Pediatrics, and are slated to appear in the January print issue of the journal.

In the 1990s, researchers released a small study that found that when adults listened to a Mozart sonata they performed better on intelligence tests. Numerous studies have been done since, including studies on premature infants that have found the "Mozart effect" can decrease the heart rate, lower stress hormone levels and ease distressed behavior in premature infants, according to background information in the new study. Babies exposed to music have also shown an increase in their levels of oxygen and weight gain.

However, none of these studies have been able to look at how the music might be causing these changes.

To get an idea of how Mozart's music might help weight gain, the researchers designed a prospective, randomized trial that included 20 healthy babies who were born prematurely. The babies weren't eating on their own, but instead were being tube-fed consistent quantities of food.

The babies were randomly assigned to listen to no music or to Mozart for 30 minutes for two consecutive days.

During the first 10 minutes, the resting energy expenditure was similar in both groups. But during the next 10 minutes, the researchers noted a change in the babies who were exposed to Mozart -- their resting energy expenditure decreased, and the effect continued through the next 10-minute period as well. Overall, there was a 10 percent to 13 percent drop in resting energy expenditure.