Cabbage (Brassica oleracea) leaves have been applied topically to the breasts to treat breast engorgement and as an adjunct to treatment of mastitis. Some investigators cut out a hole in the leaves to keep the nipples dry. Leaves have been applied frozen, refrigerated or at room temperature. Various studies found cabbage leaves beneficial for reducing breast engorgement and pain regardless of temperature. However, a meta-analysis concluded that there is no good evidence that topical cabbage leaves were better than no treatment, because engorgement tends to improve over time regardless of treatment. The authors felt that the intervention was cheap, unlikely to cause harm and might be soothing for the mother.[1] Another systematic review concluded that no evidence exists for cold cabbage leaves decreasing breast engorgement, but that they do decrease breast pain.[2] Unrestricted nursing of the infant may be an important factor in reducing engorgement.[3,4] Some low-quality evidence indicates that maternal cabbage ingestion might cause colic in their breastfed infants.[5]