Testosterone in Perimenopause: The Hormone Women Are Not Told About

Testosterone is not just a male hormone. Women make it too — and during perimenopause, levels can quietly drop in ways that affect energy, libido, mood, and mental sharpness. Yet testosterone is rarely part of the conversation when doctors discuss perimenopause with women. If you've been feeling flat, foggy, or have lost interest in sex and can't quite explain why, testosterone perimenopause women's health researchers have been paying increasing attention to this gap.

What does testosterone actually do in a woman's body?

Your ovaries and adrenal glands produce small amounts of testosterone throughout your life. It plays a role in maintaining muscle mass, bone density, mood, concentration, and sexual desire. It also works alongside estrogen and progesterone in ways that aren't yet fully understood.

In perimenopause — the years before your final period — all three hormones fluctuate unpredictably. Estrogen and progesterone get most of the attention, but testosterone levels also decline gradually across a woman's reproductive years. By the time menopause arrives, levels may be meaningfully lower than they were in your thirties. Some women barely notice. Others find it explains a cluster of symptoms they'd been struggling to name.

I spent a long time attributing my low energy and complete disinterest in sex to stress and exhaustion. It wasn't until testosterone came up in a conversation with my doctor that the pieces started to connect.

What are the symptoms of low testosterone in perimenopause women?

Low testosterone doesn't announce itself clearly. Symptoms tend to overlap with other aspects of perimenopause, which is part of why it goes unrecognised. The most commonly reported include:

• Reduced libido or loss of interest in sex entirely
• Persistent fatigue that doesn't improve with rest
• Difficulty concentrating or a sense of mental flatness
• Low mood or reduced motivation, distinct from clinical depression
• Loss of muscle tone or increased difficulty building strength
• Reduced sense of wellbeing that's hard to pin down

None of these is specific to testosterone. That's the frustrating part. They could point to thyroid issues, iron deficiency, sleep disruption, depression, or simply the broader hormonal chaos of perimenopause. A blood test measuring testosterone levels is a reasonable starting point, though interpreting results in women is less straightforward than in men — there are no universally agreed reference ranges for women across different life stages.

Is testosterone available as a treatment, and does it work?

For one specific use, the evidence is reasonably solid: testosterone therapy for low sexual desire in postmenopausal women has support from clinical trials and professional bodies including the British Menopause Society. Hypoactive sexual desire disorder — a persistent, distressing loss of libido — is the area where testosterone has the clearest case for use. The NHS recognises testosterone as a treatment option for this in women who have already tried estrogen-based hormone replacement therapy without adequate improvement in this area.

Beyond libido, the picture is less clear. Trials looking at testosterone's effects on mood, energy, and cognitive function in perimenopausal and menopausal women have been smaller and results have been mixed. It may help some women feel more energetic and mentally sharper, but the evidence isn't strong enough to make confident claims. Honest answer: we don't fully know yet.

The formulations currently available to women are typically low-dose — far lower than doses used in men. Gels or creams applied to the skin are most common. Side effects at appropriate doses are generally mild, but can include increased body hair or acne if doses are too high.

Why are so many women not told about this?

A few reasons compound each other. Testosterone in women hasn't attracted the same research investment as other areas of hormonal health. Many of the available products are licensed for men, meaning doctors prescribing them to women are doing so "off-label" — which is legal and not unusual in medicine, but can make some practitioners cautious.

There's also a lingering cultural assumption that women's hormonal symptoms are primarily about estrogen. The broader story of perimenopause, including progesterone and testosterone, tends to get flattened into a simpler narrative. The result is that testosterone perimenopause women's health remains a under-resourced corner of medicine — improving, but slowly.

The 2002 Women's Health Initiative study cast a long shadow over all hormonal treatments for menopausal women. Even though subsequent analysis revised many of those findings, the caution it generated has shaped clinical practice in ways that have sometimes left women undertreated. HRT more broadly has had to work hard to reclaim its evidence base, and testosterone has faced similar scepticism.

Should testosterone be considered alongside HRT?

For many women, it comes after estrogen — not instead of it. Professional guidance generally suggests that women with low libido first try optimising their estrogen therapy, since vaginal dryness and discomfort can themselves reduce sexual desire in ways that testosterone won't fix. If libido remains low after that, testosterone is a reasonable next step to discuss.

For other symptoms — fatigue, mood, concentration — testosterone is sometimes tried as part of a broader hormonal assessment, but it shouldn't be positioned as a silver bullet. It's one piece of a more complicated puzzle. The evidence for its benefits in these areas, while promising, remains limited enough that any prescriber should be honest with you about that.

If you're already on hormone replacement therapy and still struggling with energy or low mood, raising testosterone with your doctor is worth doing. If you haven't yet explored HRT at all, that's likely the more established first conversation.

When to talk to your doctor about testosterone perimenopause concerns

Bring it up if you've been experiencing persistent low libido, unusual fatigue, or a flattening of mood and motivation that doesn't respond to other changes. Ask specifically about testosterone — don't wait for it to be offered, because it often isn't. A blood test is a sensible starting point, alongside a discussion of your overall hormone picture.

Women with a history of hormone-sensitive cancers should have specialist guidance before any hormonal treatment, including testosterone. Annual review is recommended for anyone on hormonal therapy, so the dose and approach can be adjusted as your body changes.

You deserve a full picture of what's happening hormonally — not just the parts medicine has historically been most comfortable discussing. Testosterone is part of that picture, and asking about it is entirely reasonable.