June 5, 2023/Women's Health

Symptoms of Low Testosterone in Women (and Reasons Why It Might Be Low)

Symptoms are subtle, but could include a reduced libido and mood swings

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Everyone has testosterone. In women and people assigned female at birth (AFAB), testosterone only accounts for a small amount of their hormones, but it plays a critical role.

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In women and people AFAB, testosterone contributes to:

  • Bone health.
  • Cognitive function.
  • Energy level.
  • Mood.
  • Muscle mass.
  • Ovarian health.
  • Sex drive.

Testosterone is an androgen (sex hormone) produced in your ovaries and adrenal glands. Low testosterone levels can affect your mood, libido and musculoskeletal health. But low testosterone in women and people AFAB often doesn’t get much attention.

“You may have symptoms of low testosterone and low testosterone levels in your blood, but there is no defined ‘low testosterone syndrome’ in women,” says endocrinologist Divya Yogi-Morren, MD. “It’s something that’s hotly debated in the fields of endocrinology and general medicine, and has been for decades.”

But even if your low testosterone isn’t identified as a syndrome, the symptoms are real and sometimes treatable. Dr. Yogi-Morren explains what you need to know.

Low testosterone symptoms in women and people AFAB

Symptoms of low testosterone can be subtle, Dr. Yogi-Morren says. But that doesn’t mean they should be left untreated.

Here are some common signs that you may have low testosterone:

Decreased libido (sexual dysfunction)

The most common symptom of low testosterone is sexual dysfunction, which can include:

If you’re experiencing signs of sexual dysfunction, Dr. Yogi-Morren urges bringing up the issue to your healthcare provider. Low libido can also indicate a chronic condition like diabetes or a thyroid disorder. Your provider will want to rule out other conditions to make sure you get the best treatment for your symptoms.

“Low libido is not something people are always comfortable talking about, even though low sexual desire is common among people AFAB,” Dr. Yogi-Morren recognizes. “And when people do talk about it, their provider may refer them to mental health counseling instead of also looking at physical causes. But low testosterone and other hormones play an important role in libido and need to be fully evaluated.”

Increased mental health issues

Low testosterone can cause vague symptoms that mimic mental health conditions. Mental health distress can also stem from the sexual dysfunction that comes along with low testosterone levels.

When testosterone levels are low, you may feel:

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  • Anxious.
  • Depressed.
  • Irritable.
  • Fatigued.
  • Moody.

Reduced cognitive function and other symptoms

Sexual dysfunction and mental health issues are the two most common symptoms of low testosterone in women and people AFAB. But they aren’t the only signs.

Research shows that testosterone may help protect your brain from cognitive decline and the development of dementia. When levels are low, it may cause a feeling of brain fog.

“While it’s not a very common symptom of low testosterone, some people do find it harder to focus or concentrate,” Dr. Yogi-Morren notes.

Other less common signs of low testosterone include:

  • Dry skin.
  • Lack of energy.
  • Muscle weakness.
  • Thinning hair.
  • Trouble sleeping.

What causes low testosterone in women and people AFAB?

Knowing the cause of low testosterone may reveal options for treatment. Testosterone levels can decline because of:

Age

Before menopause, women and people AFAB produce three times as much testosterone as estrogen. Age is the most common cause of low testosterone. Testosterone production, like estrogen, naturally decreases with age, gradually declining from the time of your first period to the time you go through menopause.

By the time you’re 40, your androgens have likely decreased by half. After menopause, Dr. Yogi-Morren says that your testosterone levels stabilize.

Bilateral oophorectomy

Your body produces most of its testosterone in two places: Your adrenal glands and ovaries. But some people need to have their ovaries removed to treat a disease or reduce their cancer risk during a bilateral oophorectomy.

“Whenever you remove the ovaries,” Dr. Yogi-Morren explains, “you remove one of your body’s testosterone factories. As a result, you’ll have lower-than-normal testosterone levels from that point forward.”

Adrenal insufficiency

Like your ovaries, your adrenal glands are a chief producer of testosterone (and other hormones). When you have adrenal insufficiency, your glands don’t make enough of some hormones, including testosterone.

Adrenal insufficiency can happen because of an autoimmune disease or after suddenly stopping steroid medication.

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Pituitary disorders

Your pituitary gland is a pea-sized gland located at the base of your brain, and it produces the hormones that tell other glands in your body to do their jobs. When your pituitary gland doesn’t work right, it interferes with many of the glands it controls. One of those glands is your adrenal gland, which makes testosterone.

Hypopituitarism is a rare condition that involves an underactive pituitary gland,” Dr. Yogi-Morren further explains. “And it’s linked to low testosterone. The adrenal glands can’t do their job when the pituitary gland doesn’t release the right hormones in the correct amounts.”

Medications

Low testosterone can be a side effect of certain medications like:

  • Oral contraceptives: Birth control reduces androgens (including testosterone) in the body.
  • Corticosteroids: This medicine can suppress testosterone production when used long-term.

“Any medication that contains estrogen, even the low doses used for hormone replacement therapy post-menopause, can cause lowered testosterone levels,” Dr. Yogi-Morren says. “If you’re having symptoms of low testosterone and taking medication containing estrogen, it could be the cause.”

How is low testosterone diagnosed in women and people AFAB?

Low testosterone can be challenging to diagnose in women and people AFAB. The symptoms often go undiagnosed or are misdiagnosed because they mimic other conditions like:

Healthcare providers can use a blood test to measure the amount of androgen hormones in your blood. But changing hormone levels can make it difficult to accurately identify an androgen deficiency. The normal range for testosterone in women and people AFAB is 15 to 70 ng/dL, but where you fall within that range may depend on your age and other health factors.

Treatment for women and people AFAB who have low testosterone

Currently, there aren’t any testosterone replacement therapies approved by the U.S. Food and Drug Administration (FDA) for treating women and people AFAB.

“Testosterone treatments might get the response you want, such as an increase in sexual desire,” Dr. Yogi-Morren reports. “But there are side effects, such as increased acne, hair growth and mood disorders. Remember, data on the safety and efficacy of testosterone treatment for women is very limited. There is no data on long-term use.”

The most effective way to treat low testosterone is to identify and treat the cause. But causes like aging aren’t treatable. When providers can’t treat the cause, they shift the focus to treating the symptoms:

  • Sexual dysfunction: This often improves with vaginal estrogen therapy, certain antidepressants and topical androgens other than testosterone.
  • Mental health issues: You may benefit from cognitive behavioral therapy or medication.

“Low testosterone won’t usually cause significant consequences as long as your other hormones, specifically the other androgens, are within the normal range,” Dr. Yogi-Morren states. “But make sure you follow all the age-recommended guidelines for preventive health — especially getting bone density tests and screening for osteoporosis, since testosterone plays a big role in bone health.”

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