Pediatricians have been telling parents for years to put babies to sleep on their backs and keep soft bedding such as blankets, bumpers, stuffed animals or pillows out of cribs as they pose a suffocation risk. But despite decades of warnings and recommendations to reduce the risk of sudden infant death syndrome (SIDS), many parents aren't getting the message.

Every year, about 3,500 infants die from sleep-related deaths. So maybe the American Academy of Pediatrics' (AAP) newly updated "safe sleep" guidelines will be the nudge that finally gets the organization's advice to sink in.

The group's new report restates advice that's worth repeating from their 2011 guidelines: Always put baby to sleep on his back on a firm sleep surface, keeping soft objects and loose bedding out of the crib. Baby should sleep in the parents' room but in a separate bed, like a bassinet, for at least the first six months. Avoid using wedges or sleep positioners, as the AAP groups these devices in with risky soft bedding. Feel free to use a pacifier. And breastfeeding is recommended as it reduces the risk of SIDS by 50 percent.

“I think the back-to-sleep message has gotten out loud and clear,” said Rachel Y. Moon, M.D., FAAP, lead author of the statements and chair of the task force. “When you ask parents, almost every parent knows — whether they are doing it or not is a different thing. We have been less successful at getting people to not sleep with their babies, and much less successful in getting the soft bedding away from babies.”

Which is why the new guidelines specifically address an important fact of life for new moms and dads: Sometimes, tired parents may fall asleep while feeding baby. Basically, co-sleeping happens, even though parents may not intend to do it, and even though it may be dangerous.

“For the soft bedding, everybody thinks if it’s soft, then it can’t hurt the baby. But soft bedding is actually really a problem because it’s so soft they sink into it. People will often use pillows to ‘cushion’ the babies, and babies sink into them. …That’s very dangerous," said Moon. She adds that the same is true with bed-sharing: “Some parents think if baby is right next to them, they can tell if there is a problem and protect the baby.”

As dangerous as it can be to co-sleep, falling asleep with the baby on the couch is even worse, the AAP says. "No matter what, babies should never sleep on a couch, especially with another person” because infants can get wedged between the person and the cushion, said Dr. Michael H. Goldstein, M.D., FAAP, a neonatologist and task force member.

Caught on camera

Baby asleep on its back without bedding This baby has it exactly right: asleep on the back, in his own bed, wearing warm clothes, but not using blankets, bedding or stuffed animals. (Photo: FamVeld/Shutterstock)

A 2016 study from the AAP found an alarming number of babies still sleep in unsafe ways, increasing the risk of SIDS, and it may be more revealing than previous similar ones because researchers used video cameras to watch more than 160 babies while they slept for one night at three points during infancy: 1 month old, 3 months old and 6 months old. Previously, researchers simply asked parents how they put their infants to sleep, but in this study researchers could watch for themselves.

Researchers found more than 90 percent of one-month-old babies had loose items on their sleep surface. Nearly 20 percent of three-month-old babies were put to sleep on their sides or stomach. And at six months old, more than 30 percent were put to sleep on their sides or bellies, and more than 90 percent had loose items in their cribs.

"Most parents, even when aware of being recorded, placed the infants in environments with established risk factors for sleep-related infant deaths, including positioning the children on their sides or stomachs; soft sleep surface; loose bedding; or bed-sharing. Among the 167 infants enrolled in the study, those who were moved in the middle of the night were even more likely to be placed in a sleep environment that posed hazards," the AAP said in a press release.

A 2014 study showed that more than half of American babies are still in danger from the threats posed by soft bedding. Researchers from the National Institutes of Health (NIH) and the Centers for Disease Control and Prevention analyzed data from nearly 20,000 parents. In 1993, almost seven out of eight parents used blankets or other soft bedding in their baby's cribs. Although those numbers dropped sharply over the years, by 2010, more than half were still in the habit. The study, which was published in the journal Pediatrics, found the practice was most common among young mothers, blacks and Hispanics.

How to keep baby warm

This baby is wearing a sleep sack to stay warm. The arm-less one-piece garment will keep baby toasty without the suffocation risk of blankets. This baby is wearing a sleep sack to stay warm. The sleeveless one-piece garment will keep baby toasty without the suffocation risk of blankets. (Photo: loflo69/Shutterstock)

In the cold winter months, or even in the summer in an air-conditioned home, keep the blanket on the shelf. Instead, use a thicker one-piece sleep outfit (approved for use as infant sleepwear). Pajamas with feet will keep baby warm from head to toe. If you're still worried she won't be warm enough, add a onesie underneath or a sleep sack on top for an extra layer.

If you're concerned about cold hands, try baby mittens, which not only keep hands warm, they'll prevent baby from scratching herself with her fingernails, the National Sleep Foundation says. And you can prevent heat from escaping from the top of baby's head by using the soft-knit hat the hospital likely gave you when she was born.

Lastly, keep the room at a cozy temperature. Like adults, babies may sleep better in cooler temperatures. It depends on your preference, but between 68 to 75 degrees is recommended.

Editor's note: This story has been updated since it was originally published in December 2014.

Angela Nelson ( @bostonangela ) is an exhausted mom of two young daughters and two old cats, and a Pulitzer Prize-winning digital editor with more than 15 years of experience delivering news and information to audiences worldwide.