<prompt> Newborn loses how much weight in the first week?1-25-1010-1515-20  <response>: It is expected that newborns will lose some weight in the first 5-7 days of life. A 7-10 loss is considered normal for breastfed babies.A 5 weight loss is considered normal for a formula-fed newborn. Most neonates should regain this lost weight by days 10-14 of life.Refer: Nelsons Textbook of Pediatrics, SAE, 1st edition, pg no. 789 -791 