The average weight for a baby boy of 15 months is 10.2kg. Your baby son's weight of 8kg falls on the 3rd percentile line of the infant weight chart, the lowest 3% for baby's of his age. As he has been breast fed all along and even with his poor appetite, I would have expected his weight to be closer to average than it is.It would be best to take your son for a check up either by a paediatrician or by a clinic nurse to see if there is any obvious reason why your son is not gaining weight well and also why he has such a poor appetite.
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