When my girls decided they were happier sharing a bedroom than having their own, we decided to invest in a bunk bed. I take comfort in its sturdiness and safety railings, but health experts say that -- despite regulation changes that have made them safer -- bunk beds are still a common cause of childhood injury.

The most common reason for bunk bed injuries, obviously, is falls. Researchers found that boys get hurt more often than girls. The most common injuries are cuts, bruises, and bone fractures, most often to the head and neck. They also found that over 93% of falls happen at home.

However, researchers discovered something interesting. Young adults -- age 18 to 21 -- are particularly at risk for bunk bed injuries when away from home (dorms, military facilities, etc.), so the risk doesn't end with childhood. That said, kids under the age of 6 make up half of all bunk bed injuries, so keep those little ones off the top bunk. Visit CBS News for more on bunk bed safety.