Chicago ? Babies should be offered pacifiers at bedtime, and they should sleep in their parents’ room – but not in their beds – in order to lessen the risk of sudden infant death syndrome, the nation’s largest group of pediatricians says.

Both measures may help keep babies from slumbering too deeply – a problem for infants prone to SIDS, said Dr. Rachel Moon, who helped draft the new recommendations on SIDS prevention. They were prepared for release Monday at the annual meeting of the American Academy of Pediatrics.

The death rate from SIDS has fallen sharply in recent years, now that parents are warned not to let their babies sleep on their stomachs or amid fluffy bedding or stuffed toys. But it remains the leading cause of death in U.S. infants between ages 1 month and 1 year, killing more than 2,000 U.S. babies each year, and new tactics are needed to fight it, the academy said.

SIDS is defined as a sudden death of an infant, often while sleeping, that remains unexplained even after an autopsy and death scene examination.

The new policy, which updates the academy’s 2000 SIDS guidelines, also says that the only recommended sleep position for infants is on their backs. Letting babies sleep on their sides, considered a less favorable option in the old policy, is now considered too risky to even be considered an option, because infants could roll over to their stomachs.