The result of a prolonged period of crying is, of course, negative. This is because during the first year, a human's brain develops over 100 billion cells. After that, the number of brain cells will no longer increase but expand rapidly in size and connecting fibres. According to a study published in Psychology Today, when babies are stressed their bodies release cortisol, a toxic hormone that kills brain cells, into their systems.
What most parents do not know or understand is that crying is how babies communicate their hunger, pain, fear, a need for sleep, and more. When babies cry, tension rises, not only with the new parents who have no idea of what to do, but also in the babies themselves.