Brain fog, low energy, poor motivation and mood changes can be some of the most frustrating symptoms of perimenopause and menopause. They can affect work, confidence, relationships and the feeling of being like yourself.
It is understandable to wonder whether testosterone is part of the picture. Social media, patient stories and some clinical content often link testosterone with energy, confidence, motivation, concentration and mood. Some people do report wider wellbeing changes when testosterone is prescribed appropriately.
However, reported improvement is not the same as a guaranteed treatment effect. At LIVVE, testosterone is considered carefully, with the strongest evidence and guideline-backed indication remaining persistent low sexual desire associated with menopause after a wider assessment.
Why do people link testosterone with brain fog, energy and mood?
Women naturally produce testosterone, and levels change across life. Testosterone is involved in sexual function, and it also interacts with many tissues in the body. Because of this, it is often discussed in relation to broader wellbeing.
Some patients describe feeling more confident, more interested in intimacy, more responsive, or more like themselves after treatment. Others notice little or no change. Some people may be improving because of testosterone, while others may be improving because their HRT has been reviewed, sleep has improved, vaginal symptoms are better controlled, stress has reduced, or they feel more supported.
This is why it is important to separate three things:
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Patient experience
What people notice
Some patients report changes in confidence, energy, motivation or mental clarity. These experiences matter, but they do not prove that testosterone will have the same effect for everyone.
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Evidence
What studies can show
Research into mood and cognition is developing, but the evidence is not yet strong enough to make testosterone a routine treatment for brain fog, fatigue or mood symptoms.
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Clinical indication
What guidelines support
The clearest guideline-backed indication is persistent low sexual desire associated with menopause after wider causes have been considered.
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Your situation
What applies to you
Your clinician should review your symptoms, HRT, blood results where relevant, medicines, sexual wellbeing, side effects and wider health before recommending treatment.
What does the evidence say?
The most established evidence for testosterone in menopause care relates to low sexual desire, particularly when it is persistent, associated with menopause and causing personal distress. This is sometimes described clinically as hypoactive sexual desire disorder, or HSDD, although not everyone with low libido has a disorder.
For cognition, mood, energy and musculoskeletal symptoms, the evidence is less settled. Some patients report improvement, and research continues, but current guidance is more cautious. Testosterone should not be presented as a guaranteed treatment for brain fog, fatigue, low mood, motivation, weight or general wellbeing.
A cautious way to think about it is this: testosterone may be discussed when low sexual desire is a significant part of the picture, but if your main concern is brain fog, exhaustion or mood, a broader review is usually the safer starting point.
What this means for you
Testosterone is not an instant clarity, energy or confidence switch. If it is prescribed, the main aim is usually to assess whether it improves persistent low sexual desire and related distress. Any broader wellbeing changes should be tracked, but they should not be assumed or promised.
What else can cause brain fog, low energy or mood changes?
Symptoms such as brain fog, poor motivation, fatigue and mood change can feel hormonal, but they are not always caused by testosterone. Several factors can overlap at the same time.
- Sleep problems: night sweats, insomnia, early waking, snoring or restless sleep can affect concentration, mood and energy.
- Low or fluctuating oestrogen: perimenopause can affect sleep, mood, anxiety, hot flushes, headaches, joint aches and overall wellbeing.
- Thyroid disease: thyroid imbalance can cause fatigue, low mood, anxiety, palpitations, weight change or brain fog.
- Iron, B12 or vitamin D deficiency: deficiencies can contribute to tiredness, low mood, weakness, hair shedding or poor concentration.
- Stress and caring load: chronic stress, overwhelm and emotional labour can make desire, motivation and focus feel much harder.
- Depression or anxiety: mood disorders can affect libido, energy, concentration, sleep and self-confidence.
- Medicines: some antidepressants, pain medicines, antihistamines, sedatives, blood-pressure medicines and hormonal treatments can affect energy, mood or sexual desire.
- Alcohol: even moderate alcohol can worsen sleep quality, anxiety, hot flushes and next-day energy for some people.
- Under-eating or overtraining: not enough nutrition, over-exercising or low recovery can affect hormones, mood, energy and libido.
- Other illness: autoimmune conditions, infections, anaemia, long-term pain and other medical conditions can all contribute.
When is a wider review more appropriate than testosterone?
A wider medical, nutritional or medication review may be more appropriate if your main symptoms are tiredness, poor concentration, low mood, motivation changes or feeling unlike yourself, especially if low sexual desire is not your main concern.
This does not mean your symptoms are not hormonal, and it does not mean you are being dismissed. It means the safest plan is to look at the whole picture first.
A wider review may include:
- reviewing whether your HRT is controlling symptoms adequately
- checking whether vaginal or urinary symptoms are affecting sleep, confidence or intimacy
- reviewing sleep quality, stress, mood and mental health
- checking nutrition, alcohol, activity levels and recovery
- reviewing medicines that may affect libido, energy or mood
- considering blood tests such as thyroid, full blood count, ferritin, B12 or vitamin D where clinically appropriate
- discussing whether low sexual desire is present, persistent and personally distressing
When may testosterone still be discussed?
Testosterone may still be discussed if persistent low sexual desire is a key concern, particularly where it is associated with menopause, causes personal distress and has not improved after other relevant factors have been addressed.
Before testosterone is prescribed, your clinician may review whether your HRT needs adjusting, whether vaginal symptoms or painful sex need treatment, whether medicines may be affecting libido, and whether stress, mood, sleep or relationship factors are contributing.
If testosterone is prescribed, it should be monitored. The aim is not to raise levels as high as possible. The aim is to use the lowest appropriate treatment approach, assess benefit and side effects, and keep testosterone levels within the female physiological range.
What should I track before or during a review?
It can help to keep a simple note of what you are experiencing. This makes your review more useful and helps avoid focusing on one symptom in isolation.
- whether low sexual desire is present, persistent and distressing
- whether arousal, response, pleasure or orgasm have changed
- whether sex is painful, uncomfortable or avoided because of dryness
- sleep quality, night sweats or early waking
- energy, motivation, concentration and mood patterns
- stress, workload, caring responsibilities and relationship strain
- current HRT, vaginal treatments, medicines and supplements
- any acne, hair changes, irritation, mood changes or other side effects if already using testosterone
How this fits into the LIVVE pathway
If libido is your main concern, LIVVE will help you understand whether testosterone may be appropriate after a wider suitability review. If brain fog, fatigue, motivation or mood are your main concerns, the better first step may be a broader menopause and symptom review.
That review may lead to HRT optimisation, vaginal or urinary symptom treatment, blood tests, lifestyle or nutrition advice, medication review, psychosexual support, or a monitored testosterone assessment where appropriate.
Book a wider hormone and symptom review
If you are struggling with brain fog, low energy, mood changes, motivation or low sexual desire, LIVVE can help you review the whole picture and decide what support is most appropriate.
