During this time there may be issues that develop if you put your baby to sleep in a baby box can cause the baby to die suddenly. Is this myth true? Sudden infant death syndrome (SIDS) is a diagnosis made when a baby who appears to be healthy dies suddenly without obvious signs and causes. Usually this scary syndrome afflicts newborns or under one year old. The cause of sudden infant death syndrome is not known with certainty, but it is suspected that SIDS is caused by a combination of several factors, which include the physical condition of the baby and his sleeping environment. There is even a myth that says if SIDS occurs due to putting your baby to sleep in a baby box. Myth or Fact? In fact, putting children to sleep in a baby box does not cause SIDS. The problem lies in the environment or circumstances surrounding the baby's box or crib. For example, babies sleep on soft or too soft mattress surfaces. This can increase the risk of SIDS and other causes of infant death.