Most adults would never dream of sleeping without their favorite pillow and blanket, but such items put infants at increased risk of SIDS (Sudden Infant Death Syndrome). This is especially true for infants less than 12 months of age.
The American Academy of Pediatrics (AAP) launched the "Back to Sleep" campaign in 1992 to educate parents that the safest way for infants to sleep is on their backs. Since this campaign, there has been a drastic decrease in SIDS related deaths. Unfortunately, other causes of sleep-related deaths have increased.