I came across some funny words on internet after childbirth. They are the words about breast-feeding.
完ミ……完全にミルクで育てる（Grow a baby with only powder milk）
完母……完全に母乳で育てる（Grow a baby with only breast milk)
混合……ミルクと母乳を両方使って育てる（Grow a baby with both powder milk and breast milk）
After childbirth, I knew for the first time that there are some groups which strongly go ahead with breast-feeding. A doctor told me that they even call powder milk as “chemical soup”.