Few studies have investigated breastfeeding in twins, and none have addressed the effect of antenatal counseling on breastfeeding twins.The purpose of this study is to investigate the effect of antenatal breastfeeding counseling on the breastfeeding rates in twin pregnancies.

In singleton pregnancies, three randomized studies have recently examined the influence of antenatal breastfeeding education on the breastfeeding rates (Su et al. 2007; Mattar et al. 2007; Wong et al. 2014). Two of these studies did not find differences in the total breastfeeding rates between the groups that received and did not receive antenatal breastfeeding education at the infants' age of 6 months old (Su et al. 2007; Wong et al. 2014). However, Su et al. found higher exclusive breastfeeding rates for 6-months-old infants in the group that received antenatal counseling. In contrast, Mattar et al. 2007 found significantly difference in breastfeeding rates with individual counseling compared to non-counseling or only breastfeeding educational material with no counseling.

Few studies have investigated breastfeeding in twins specifically, and even fewer have focused on the duration of breastfeeding of twin infants. Furthermore, in our literature search, we did not find studies of breastfeeding of twins investigating the effect of antenatal education on breastfeeding twins. Our hypothesis is that mothers of twins receiving specific antenatal counseling on breastfeeding should have a higher rate of breastfeeding than mothers who do not receive antenatal breastfeeding counseling. Therefore, the purpose of this study was to investigate the effect of specific antenatal breastfeeding counseling on the breastfeeding rates in twin pregnancies.

Inclusion Criteria:

• twin pregnancies with both fetuses alive between 18 and 34 weeks of gestational age and followed at our twin clinic; absence of absolute contraindications for breastfeeding, such as positive serology for HIV, HTLV; absence of use of lactation inhibitors to treat prolactinoma, such as cabergoline and bromocriptine; and absence of major malformation of one or both twins that could preclude breastfeeding, including gastrointestinal defects, cleft lip and cleft palate, or malformations that would require neonatal surgery with prolonged hospital stay.

Exclusion Criteria:

• fetal or postnatal death of one or both twins; delivery before 32 weeks; major malformation diagnosed postnatal; and lost to follow up or no breastfeeding information.

No data will be shared