Bio identical hormone therapy is a type of hormone replacement therapy that uses hormones that are structurally identical to the ones produced naturally in the human body. Unlike synthetic hormones used in traditional hormone replacement therapy, bio identical hormones are derived from plant sources and are designed to mimic the body's own hormones exactly. This approach is said to provide the benefits of hormone replacement with fewer side effects, as the body recognizes the hormones as its own. Bio identical hormones can be used to address a variety of hormonal imbalances, from menopause symptoms in women to andropause in men.