The sex hormones listed below will all have a positive impact on sex, including increased sexual pleasure, decreased libido, improved sexual performance, and improved sexual sensitivity. You can read more about the effects of different hormones in Sex and Psychology (also see the Sex and Relationships page for many articles on the topic). Most sex hormones have a low-dose, long-term effect, which means that they will continue to work for many years to come. Sex hormones that are high-dose, short-term, or both have a negative effect on sexual performance and sexual pleasure. I also offer free consultation services. As always, you can also call 1-800-234-8388 or (866) 959-9000 to talk about your sex hormones . A number of different sex hormones exist. The most popular are estrogen, progesterone, testosterone, and some synthetic forms of these hormones. A few others exist, including luteinizing hormone (LH), androsterone, and androstenedione, and estriol. Most of these hormones don't cause side effects like acne, hair growth, hair loss, or any other unwanted effects. You need one particular form of hormone to function normally in the body, and the one that works for you is called your "biological sex." If you're born with one or more sex chromosomes, your sex is determined by how your body and your brain develop.