Stress is a disease that has some effect on the immune system of smaller, because these can result in immunosuppression of the responses against various external attacks that suffers the same, translating everything as a child with constant illness.
Babies show situations that are stressed by crying, this does not mean that every time your baby cries is under a situation of stress, but the crying is their way of letting us know that sometimes something is not quite right.
It also manifests itself in a constant state of alert, so it does not rest or sleep properly, appears angry most of the time, and has trouble feeding, causing much needed to nurse more often than normal.
Stress in a newborn can affect their emotional and social well being then a boy of low self-esteem, memory problems and getting along with peers, then this situation extending even to adulthood.
By lowering your immune system, the baby is eating disorders, weight loss or gain, trouble sleeping, hypersensitivity diseases, atopic and contact, autoimmune diseases, which they can not be controlled, constant presence of infections such as herpes labialis, death of cancer, and progression of tumor diseases.
It is very important for the baby to develop in an environment away from stress, not only preventing disease but provide proper development.