Most hormones are produced by a group of glands known collectively as the endocrine system. Even though these glands are located in various parts of the body, they are considered one system because of their similar functions and relationship to each other.
Hormones are secreted into the bloodstream by these glands. From there, they travel to all parts of the body playing the role of chemical messengers turning specific target tissues on or off. Because they can not be stored in the cells, hormones do their work as they pass through and then they gone. As a result, hormones must be made and released at the precise time they are needed. To keep things functioning at their best, the body must constantly fine-tune hormone release to keep levels within proper limits.
Because of the complexity of these interactions, a hormonal imbalance rarely stems from only one type of hormone. More often, the problem involves a series of hormones that are out of balance. In addition, a disruption in the balance of hormones produced by one gland or set of glands can cause other glands or systems to dysfunction. Before you know it, your are feeling miserable on multiple fronts.