Low testosterone in females is a real but often overlooked hormonal issue. Women produce testosterone in much smaller amounts than men, but it still plays a significant role in energy, sex drive, bone strength, and mood. A healthy 30-year-old woman typically has a total testosterone level between 15 and 46 ng/dL, compared to several hundred in men. When levels fall below that range, a cascade of symptoms can follow.
Where Testosterone Comes From in Women
Women produce testosterone from three sources in roughly equal parts. About 25% comes from the ovaries, another 25% from the adrenal glands (small organs on top of the kidneys), and the remaining 50% is converted from precursor hormones elsewhere in the body. This means anything that disrupts ovarian or adrenal function can significantly reduce testosterone output.
Only about 1 to 2% of testosterone circulating in your blood is actually “free” and available for your body to use. The rest is bound to a protein called SHBG, which carries hormones through the bloodstream but prevents them from being active. This is why two women can have the same total testosterone number but feel very different: if one has high SHBG, less of her testosterone is actually doing anything. It also means a standard blood test for total testosterone doesn’t always tell the full story.
How Testosterone Naturally Declines
Testosterone levels in women drop steadily with age. The decline begins in the late 20s and continues through menopause. By the time a woman reaches her 40s, her testosterone may be roughly half of what it was at 20. Menopause accelerates the process because the ovaries, which supply a quarter of total production, dramatically slow down.
Surgical removal of both ovaries causes an immediate and steep drop, since it eliminates one of the three production pathways entirely. Other medical conditions that can lower testosterone include premature ovarian failure, adrenal insufficiency, hypothalamic amenorrhea (when the brain stops signaling the reproductive system properly), and pituitary disorders. Certain medications also suppress testosterone, including oral contraceptives, oral estrogen therapy, and corticosteroids.
Symptoms to Recognize
The most commonly reported symptom is low sex drive, sometimes to the point where desire feels almost entirely absent. But the effects extend well beyond the bedroom. Women with low testosterone frequently experience persistent fatigue that doesn’t improve with rest, loss of muscle tone and strength, difficulty sleeping, and thinning hair. Mood changes are common too, particularly depression and anxiety that may not respond well to typical treatments.
Other symptoms include vaginal dryness, dry or brittle skin, irregular menstrual cycles, and difficulty conceiving. Because many of these overlap with other conditions like thyroid problems, iron deficiency, or perimenopause, low testosterone in women often goes undiagnosed for years. The symptoms tend to develop gradually, which makes them easy to dismiss as “just getting older” or stress-related.
Long-Term Effects on Bone Health
Beyond day-to-day symptoms, chronically low testosterone may have consequences for bone density. Research in postmenopausal women has found a positive association between testosterone levels and bone mineral density in the lumbar spine. Women with levels below 30 ng/dL had measurably lower bone density compared to those with higher levels. While estrogen loss gets most of the attention in discussions about osteoporosis after menopause, testosterone appears to independently support bone health through its own receptor pathways. Appropriately raising testosterone in women below that 30 ng/dL threshold may improve bone outcomes.
How It’s Diagnosed
Diagnosis relies on a combination of symptoms and blood work. If you’re still menstruating, timing matters. Research shows the most reliable window for testosterone testing falls between days 12 and 15 of the menstrual cycle, with blood drawn in the morning when hormone levels are most stable. Your provider should ideally test both total and free testosterone, since SHBG levels can mask a deficiency in the total number.
There’s no single universally agreed-upon cutoff that defines “low” in women the way there is for men. The reference range for a 30-year-old woman spans roughly 15 to 46 ng/dL for total testosterone and 1.2 to 6.4 pg/mL for free testosterone. Levels near or below the lower end of those ranges, combined with symptoms, generally point toward deficiency. A 2019 Global Consensus Position Statement, endorsed by 11 major medical societies including The Endocrine Society and the International Menopause Society, acknowledged testosterone’s role in female sexual function but emphasized that diagnosis should not be based on lab numbers alone.
Treatment Options
No testosterone product has been FDA-approved specifically for women. All testosterone therapy in women is prescribed off-label, meaning doctors adapt products designed for men. The typical starting dose is about one-tenth of the male dose.
Transdermal formulations (gels, creams, or patches applied to the skin) are the preferred method. They allow for gradual absorption and easy dose adjustments to keep levels in the normal female range. A common starting point with a 1% testosterone gel is about 5 mg per day, which can be increased to 10 mg based on symptom response and follow-up lab results. Injections are sometimes used but can cause hormone levels to spike and dip, pushing above the normal range before dropping back down. Oral testosterone is generally avoided because of inconsistent absorption and potential liver effects. Implanted pellets offer convenience but lack the ability to adjust dosing once they’re placed.
The goal of treatment is to restore testosterone to normal premenopausal levels, not to exceed them. Going above the physiological range increases the risk of side effects. In studies of women receiving higher-dose pellet implants (75 mg), about 5% reported mild facial hair growth and around 10% experienced abnormal vaginal bleeding. Localized effects at the application site, like increased hair growth or acne, have also been reported with gels and creams. These side effects are generally linked to doses that push levels above the normal female range and tend to be reversible when the dose is reduced.
What Helps Beyond Medication
Resistance training is one of the most reliable ways to support healthy testosterone levels naturally. Strength exercises stimulate hormone production and help counteract the muscle loss and bone thinning that accompany low testosterone. Adequate sleep also matters, since most hormone production follows a circadian rhythm and chronic sleep deprivation suppresses it. Maintaining a healthy body weight plays a role too: both very low body fat and obesity can disrupt the hormonal balance between testosterone, estrogen, and SHBG.
If you’re taking oral contraceptives or oral estrogen and experiencing symptoms consistent with low testosterone, it’s worth discussing alternatives with your provider. These medications increase SHBG production, which binds more testosterone and reduces the amount your body can actually use, even if your total levels look normal on paper.