What the researchers found, was that there is, in fact, very little difference between babies who were exclusively breastfed, and those who received a combination of formula and breastmilk, at least when it comes to reducing the risk of SIDS. According to
Working Mother magazine, the study review found that any breastfeeding for the first 2-4 months reduces the risk of SIDS by about 40 percent. Any breastfeeding for 4-6 months reduces the risk of SIDS by about 60 percent. And any breastfeeding for longer than 6 months reduces the risk of SIDS by about 74 percent.