Hormone therapy is used against certain cancers that depend on hormones for their growth. Hormone therapy keeps cancer cells from receiving or using the hormones they need. This treatment may include the use of drugs that stop the production of certain hormones or that change the way they work.
Hormone therapy can cause a number of side effects such as fluid retention, weight gain, hot flashes, and, in some cases, blood clots. In women, hormone therapy may cause: interrupted menstrual periods, vaginal dryness, and/or a loss of or an increase in fertility. Women taking hormone therapy should talk with their doctor about contraception during treatment. In men, hormone therapy may cause impotence, loss of sexual desire, or loss of fertility.