While bioidentical hormones are generally considered safe when used under the guidance of a healthcare professional, they are not without risks. Like all hormone therapy, bioidentical hormones can cause side effects, particularly if the doses are too high or the hormones are not properly balanced. Some potential side effects of bioidentical hormone therapy include headaches, breast tenderness, bloating, and mood changes.
Additionally, there is some concern that bioidentical hormones may increase the risk of certain types of cancers, including breast cancer. However, the evidence on this is mixed, and more research is needed to fully understand the risks and benefits of bioidentical hormone therapy.