At what age can a baby be put to sleep on their stomachs?

According to the American Academy of Pediatrics, "We are unsure of the level of risk associated with placing a baby on their stomach to during the first year of life, although there are some data that suggest that the greatest decrease in SIDS incidence in those countries that have changed to mostly back sleeping position has been seen in the younger aged infants (2 to 6 months). Therefore, the first 6 months, when babies are forming sleeping habits, are probably the most important time to focus on. Nevertheless, until more data suggest otherwise, it seems reasonable to continue to place babies down for sleep on their backs throughout infancy." The AAP says that sleep position preference is a learned behavior among infants from birth to 4 to 6 months of age. However, many infants over 6 months of age still haven't "learned" to like their stomachs, position, so it is likely that they will continue turning over to a position they prefer.

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