Sleep is essential for baby’s development, health and growth. The human growth hormone, a protein hormone secreted by the pituitary gland responsible for the baby’s physical growth, is mostly secreted while the baby is in deep sleep. In fact, studies have proven that 80% of growth hormone is released during the deep sleep phase. Therefore severe and prolonged sleep dissorders or defficiency might directly impact your baby’s physical development and growth.
It has also been studied that sleep (in particular, REM sleep) promotes brain growth. Babies are born with around 30% of their full brain size. During the first years of life, the brain grows enormously to its full adult size. Sleep plays an integral role in this growth.