A sex hormone is a hormone that works on male or female sex organs to enhance or correct them. These hormones often have effects in both the female and male bodies, and can include the increase of hormones to increase muscle mass, the production of testosterone to produce a man's hair, the increased bone density of the bone or muscle in the body, and many other benefits. Sex hormones are a different type of medication than sex-changing hormones, and may affect the way the body is used. Male sex hormones, or estrogen, can be used to increase male sexual characteristics (e.g. increasing the size of the penis), but these can cause unwanted side effects, including a man's hair falling out or getting longer. This is my current favorite sex hormone. Hormones like estrogen and progesterone, also called estrogen, and progesterone, are produced by the body to regulate the development of male and female sexual characteristics. These are different types of hormone that can be taken orally or injected. While it is safe to use estrogen and progesterone, the side effects are more severe if you have a pre-existing condition. Many medical experts think that the combination of hormones can be used to prevent cancer.