餵乳的問題是怕營養不夠，如果餵了以後會變胖，表示其營養成分不錯，而基因決定胖瘦，餵母乳太久會導致肥胖的說法缺乏科學根據。
餵母乳有沒有壞處？這是一個在主流醫學還有些爭議的問題，但根據美國兒科醫學會(Amerian Academy of
Pediatrics)的建議，餵哺母乳並沒有年齡的上限，並沒有證據顯示餵哺母乳太久會有什麼問題。
牛奶肚是一個隨意編出的名詞，其意義跟啤酒肚一樣。這些不太高雅的肚子形容詞，都屬於醫學的迷思。肚子突出源自於遺傳基因，卻常被宣稱跟飲食過量有關。不信的話再看看好了，小安安到國小之前，肚子一定會縮小，到了中年以後，肚子一定會再度突出，這種人生歷程是具有啤酒肚基因者無法避免的，除非刻意保持營養不良狀態，肚子才不會突出。
美國AAP建議原文：
Pediatricians and parents should be aware that exclusive breastfeeding is
sufficient to support optimal growth and development for approximately the
first 6 months of life and provides continuing protection against diarrhea
and respiratory tract infection. Breastfeeding should be continued for at
least the first year of life and beyond for as long as mutually desired by
mother and child.
Increased duration of breastfeeding confers significant health and
developmental benefits for the child and the mother, especially in
delaying return of fertility (thereby promoting optimal intervals between
births).
There is no upper limit to the duration of breastfeeding and no
evidence of psychologic or developmental harm from breastfeeding into the
third year of life or longer.
