#AskTheExpert Hello doctor My 4 month baby urinate small amount with yellow colour and at night not urinate for long time,is this due to dehydration?? please advise how to resolve this issue

A. Your newborn pees all day and night because his bladder is very small, even a small accumulation of pee can cause his body to expel it as a reflex action. However, as your baby grows, his bladder capacity will increase, and his body will start to produce a hormone that prevents him from peeing at night.