Note to new parents and other caregivers: Babies should sleep on their backs and ditch the soft bedding — no padded crib bumpers, blankets or pillows, including those claiming to shape infant heads."The use of head-shaping pillows can create an unsafe sleep environment for infants and may contribute to the risk of of suffocation and death," the Food and Drug Administration warned on Thursday, noting that it had recently learned of companies claiming thee products can can prevent and treat so-called flat-head syndrome.The issue is one that can arise when babies spend a lot of time on their backs, with flat spots developing on the back of their heads.But most cases of what's technically known as plagiocephaly, are short-lived and improve with age, according to the FDA.The AAP also recommends that infants sleep on their backs without any soft bedding."