Genevera Pittman's Reuter's article entitled, "Infant bed-sharing tied to longer breastfeeding"examines the association between bed sharing and breastfeeding. Women who co-sleep tend to breastfeed an average of ten weeks longer than those that do not share a bed with their child. This seems to be due to the convenience of not having to get up and get the baby in and out of the crib.
The World Health Organization recommends that children are exclusively breastfed until six months (when food should also be introduced to a baby's diet), though in the United States only one in six women exclusively breastfeed up until six months. Despite the seeming benefits of co-sleeping, the American Academy of Pediatrics recommends against it, because of the link with SIDS. They instead urge parents to place children in the same room, but in a separate sleeping space.
Interestingly, Pittman, in another article "Bed-sharing increasing among minority families" explores the racial disparity in co-sleeping. In the study, 39 percent of black infants and 21 percent of hispanic infants were bed-sharing compared to only 9 percent of white infants. It is unclear the reason the this racial imbalance.