Objective and Method. To report on the weaning reasons at the maternity ward, at 3, 6, and 12 months and to report the socioeconomic characteristics of mothers not satisfied with breastfeeding duration as well as of those who have weaned their child because of perceived insufficient milk (PIM). Two cross-sectional studies were performed in 2012. Results. 62.9% of mothers in Wallonia and 56.8% in Brussels are dissatisfied with the duration of breastfeeding. In the two regions, younger mothers, ignoring theWHOrecommendations, having a low level of education, or thinking not having sufficient milk production, weremore likely to be dissatisfied. According to the analysed period, PIM and return to work are the two leading causes of weaning.While in Brussels PIM seemed to be associated only with partial BF at the maternity ward, in Wallonia, PIM was associated with a less educated environment and with ignoring theWHO recommendations. Conclusions. Too many mothers, especially destitute, are dissatisfied. They more often evoke PIM as reason for weaning. However, the literature shows that the real lack of milk only affects 1-5% of the mothers. Professionals need to be better informed of this discrepancy between mothers' perception and physiology. They should be more supportive, especially among more precarious mothers. ; info:eu-repo/semantics/published