endocrine control

A friend of mine has some endocrine disease. She told me that her illness is very common. The basic is that some hormones are increased and because of that her body does not function well. Therefore I would like to know something more about endocrine control. For any advice thanks in advance.

Endocrine system is the system of glands that secrete chemicals called hormones in blood. Sometime this gland does not function well so the level of their hormones increases or decreases. If it is low it is called hypofunction and if is high-hyprefunction. This hormone has their target organs, those that are controlled by them. If their level is changed organ's function will be undermine. That is often causing the disease.