All newborns, during their first 3-4 days of life, suffer from a transitory weight loss called physiological loss. To consider that our baby loses normal weight, we must know that it ranges between 5 and 10% of the weight he had at birth, that is, if the baby at birth weighed 3,400 grams, after three days he can reach 3,060 grams
This decrease in weight is natural, due to the loss of fluids that the baby suffers when passing from the aqueous environment of the uterus to the dry outside environment. The loss of fluids is determined by various factors, such as body temperature and humidity, room temperature, etc., and are eliminated through urine, sweat and meconium (the first feces).
It should also be borne in mind that at first the breast produces less milk (colostrum), since the real rise occurs between the second and fifth day. While we are in the hospital, the medical staff will monitor the baby's weight loss, once we return home, we will have to weigh the baby after one week after birth. Normally, between 7 and 10 days, the child will have recovered the grams he lost, although the recovery time can be extended to two weeks.
The best thing for the baby to recover satisfactorily, is to offer the breast on demand, that is, to drink whenever he asks for it, in addition, milk production will be regulated based on the baby's needs.
What should not be done is to provide a complement of milk, because if we resort to them, the baby will not be so hungry when we breastfeed and suck less, which will also decrease milk production. Nor should we become obsessed with the double heavy, the growth of our son is not constant over time, so we must wait at least a week to check its evolution.
Do not forget that all your doubts you can consult the pediatrician, for example, if the baby takes little breast, does not grow properly and urinates little and very concentrated, it is likely that he will not feed enough, so do not doubt that the specialist will give The solution to the problem.
