Levels of testosterone are naturally much higher in males. Testosterone is a hormone that your gonads (sex organs) mainly produce. Testosterone levels are naturally much higher in males. However, low libido for a long period of time can sometimes be an indicator of an underlying health condition. If changes in your sex drive concern you, a doctor can offer more guidance. WebMD does not provide medical advice, diagnosis or treatment. Irwin Goldstein, MD, director of sexual medicine, Alvarado Hospital, San Diego; editor-in-chief, The Journal of Sexual Medicine. If damaged, the tiny blood vessels supplying the penis can no longer dilate to bring in the strong flow needed for a firm erection. Testosterone is the main androgen, meaning it stimulates the development of male characteristics. More specifically, both testicles and ovaries produce testosterone. Testosterone is a hormone that your gonads (testicles or ovaries) mainly produce. Men with low testosterone have traditionally taken testosterone in creams or gels made specifically for men. Neither is testosterone’s effects on improving bone and muscle strength, or leveling mood. These include deep voices and facial hair and higher voices and breast development. Female bodies readily convert testosterone and other androgens they produce into female sex hormones. Testosterone is an androgen, which is a "male" sex hormone that plays a role in reproduction, growth, and maintenance of a healthy body. When it comes to sex hormones, women are driven by estrogen, and men are driven by testosterone, right? However, the wisdom and effectiveness of testosterone treatment to improve sexual function or cognitive function among postmenopausal women is unclear. However, many men with normal testosterone levels have similar symptoms, so a direct connection between testosterone levels and symptoms is not always clear. Testosterone therapy is approved for the treatment of delayed male puberty and abnormally low production of testosterone secondary to malfunction of the testes, pituitary or hypothalamus. Also, as men get older, their livers make more sex hormone binding globulin (SHBG), which binds to testosterone circulating in the bloodstream. In fact, as men age, testosterone levels drop very gradually, about 1% to 2% each year — unlike the relatively rapid drop in estrogen that causes menopause. Part of this may be due to the difficulty defining "normal" testosterone levels and "normal" behavior. It's one of several androgens (male sex hormones) in females. The studies that do exist have yielded uncertain results beyond improving sexual function; plus, little is known about the long-term effects of testosterone in women. Historically, testosterone was used in combination with estrogen and progesterone, hormones that decline with age. But can testosterone therapy for women really lead to such profound health improvements? Low self-esteem could take a toll on your sexual, emotional, and physical well-being. Some stress management techniques, such as breathing exercises, meditation, and talking with a therapist, may help improve libido. If you’re distracted by situations or periods of high pressure, sexual desire may decrease. They may recommend a treatment plan that could include home remedies to sleep better and medication. If you experience decreased libido and sleep disturbances, speak with a healthcare professional. Testosterone is an important male hormone that’s mostly produced in the testicles.