本研究共收集53名完全哺牛乳，及39名完全哺母乳的新生兒為對象，以探討不同哺乳方式新生兒出生一週內及滿月時的體重變化。
研究結果發現，「哺牛乳組」於產後滿二天時體重最低，此時平均生理性體重喪失為2.95%，三天時開始回升;「哺母乳組」則於產後二、三天時體重最低，此時平均生理性體重喪失約為4.16%，於四天時開始回升。本研究並發現，雖然哺母乳新生兒出生一週內之生理性體重喪失顯著多於哺牛乳組，但在出生六日時，哺母乳組的體重回升已顯著較哺牛乳組快。至滿月時，兩組新生兒體重的增加已無顯著差異。

The purposes of this study were to understand the body weight changes of bottle -or breast-fed neonates from birth to one week and at the age of one month. 53 fully-bottle-fed neonates and 39 fully-breast-fed neonates were involved in this study.
The results were identified as: (1) The bottle-fed neonates significantly lost weight. (2.95% of physiological body weight loss) on day 2 after birth, and regained weight on day 3; (2) The breast-fed neonates significantly lost weight (about 4.16% of physiological body weight loss) at the age of 2 days and 3 days, and regained weight on the fourth day after birth; (3) Although the breast-fed neonates had more physiological body weight loss than the bottle-fed neonates during their first week, they regained more weight on day 6 (p<0.01). At one month after delivery, there were no significant difference in body weight between these two groups.