Hormones, such as estrogen and testosterone, are naturally occuring in the body. However, there may be a time when you notice these levels dropping, often signaled by certain symptoms that prompt a visit to your doctor. That's where bioidentical hormone therapy comes in. Bioidentical hormones are hormones that are given either by injection or through the use of pellet therapy. These hormones are identical to biological hormones, making them a safe and effective replacement when the body doesn't produce enough of these hormones on its own. The body will recognize these hormones as being a naturally occurring hormone in the body, so it will accept it and use it as though it were made by the body naturally.