A hormone is a substance made by one tissue and carried by the bloodstream to another tissue in which it exerts some effect.
Hormones affect growth and metabolism.
There are many reasons that these glands and target tissues may fail. If you have a hormone disorder, your symptoms will vary based upon the affected tissue. Any unintentional change from what is normal for you should be mentioned to your healthcare provider. Treatment is available for most hormonal problems. This may be done with hormone replacement, or by destruction or removal of abnormal glandular tissue to control excess production of the hormone.