Low libido: causes, tests and what helps in the UK

Low libido means a lower sex drive than feels normal for you, and it is only a problem if it bothers you, affects your wellbeing, or creates distress in a relationship. The useful approach is to look for the driver: stress, mood, relationship strain, pain, erectile problems, vaginal dryness, medicines, contraception, menopause, testosterone deficiency, sleep loss, alcohol, thyroid disease, diabetes or another health condition can all reduce desire.¹

When low libido is normal

Sex drive naturally varies. It often dips during grief, illness, pressure at work, new parenthood, poor sleep, relationship conflict, pain, fertility treatment, trauma, surgery, cancer treatment, or when someone does not feel safe, seen or rested. A lower libido is not a failure of character and it is not automatically a medical disorder.

The key clinical question is distress. Some people have a naturally low interest in sex and are comfortable with that. Others notice a clear change from their usual pattern and feel worried, disconnected, ashamed or pressured. The target is not to reach someone else's idea of a normal sex drive. It is to understand whether there is a treatable cause and whether you want help.

Desire also works differently in different people. Some people feel spontaneous desire before sex starts. Others mostly experience responsive desire, meaning interest appears after affection, relaxation, touch, privacy and emotional safety are present. If you only wait for spontaneous desire, you may miss a healthy responsive pattern.

Common causes

The commonest causes are usually layered. A person may have menopause-related dryness, an SSRI antidepressant, fatigue, resentment about unequal caring responsibilities and worry about performance. Treating only one layer may help a little, but the better results usually come from mapping the whole pattern.

Mood matters. Depression can reduce pleasure, energy, confidence and sexual interest. Anxiety can keep the nervous system in threat mode. Past sexual trauma or current coercion can make desire shut down. If low libido sits alongside severe depression, thoughts of self-harm, feeling unsafe, or pressure to have sex you do not want, seek help promptly. In the UK, speak to your GP, use NHS 111 and select the mental health option for urgent support, call 999 if life is at risk, and Samaritans are free on 116 123 at any time.

Medicines are another common layer. NHS guidance lists blood pressure medicines, antidepressants and hormonal contraception as possible contributors.¹ Antidepressant-related sexual side effects can involve reduced desire, delayed orgasm, erectile difficulty or genital numbness. A 2021 systematic review and network meta-analysis found that evidence for add-on treatments is limited and mixed, so the safest route is review with the prescriber rather than experimenting alone.⁸

Alcohol deserves a direct mention. It may reduce inhibition short term, but heavier drinking can worsen sleep, mood, erections, orgasm, testosterone signalling and relationship conflict. Recreational drugs, anabolic steroids and some performance drugs can also disrupt libido.

What to check

A good review starts with the story, not a huge hormone panel. Useful details include onset, whether desire is low in all situations or only with one partner, pain, dryness, erections, orgasm, menstrual or menopause symptoms, pregnancy or postpartum context, sleep, alcohol, stress, mood, trauma history if relevant, contraception, medicines, chronic illness and relationship safety.

Basic checks may be more useful than expensive private panels. Depending on the pattern, a GP may consider full blood count and ferritin for anaemia or iron deficiency, HbA1c for diabetes risk, thyroid function, kidney or liver tests, prolactin if symptoms suggest it, pregnancy test where relevant, and medication review. If there are pelvic symptoms, pain, bleeding changes, vaginal dryness or recurrent urinary symptoms, sexual health or gynaecology assessment may be more relevant than hormones alone.

In men with low libido, fewer morning erections, erectile dysfunction, infertility, hot flushes, small testes, gynaecomastia or reduced shaving frequency, testosterone testing can be appropriate. The Endocrine Society guideline recommends diagnosing hypogonadism only when symptoms and signs fit and testosterone is unequivocally and consistently low, confirmed with repeat morning fasting total testosterone.⁴ One afternoon result after poor sleep or illness is not enough.

What actually helps

The best treatment depends on the driver. If sex hurts, treat pain and dryness first. Lubricants can help friction, but persistent vaginal dryness, recurrent urinary symptoms or pain after menopause may need vaginal oestrogen or wider menopause care. NICE lists genitourinary symptoms and low sexual desire among menopause-associated symptoms, and recommends an individualised approach.²

If erections are unreliable, desire may drop because sex has become stressful. That does not mean the person has no desire. It may mean the body has learned to anticipate pressure. Erectile dysfunction, premature ejaculation, delayed ejaculation and orgasm problems deserve direct assessment, including cardiovascular and diabetes risk where relevant.

If mood is the main driver, treatment may mean psychological therapy, exercise and sleep work, social support, medication review, or antidepressant adjustment. Do not stop an antidepressant abruptly because libido is low. A GP or prescriber can discuss timing, dose, alternative medicines, therapy access and relapse risk.

If relationship strain is central, relationship counselling or sex therapy may be more effective than supplements. NHS guidance lists relationship counselling as a possible treatment when relationship problems are driving low libido.¹ A practical goal is to reduce pressure and rebuild non-demand intimacy: affection, touch, shared time, privacy, honest conversations and permission for sex not to be the immediate outcome.

Psychological and sex-therapy approaches can help, particularly where anxiety, attention, shame or loss of erotic focus are part of the problem. In a 2021 randomised trial, Brotto and colleagues compared eight weekly sessions of group mindfulness-based cognitive therapy plus sex education with supportive sex education and therapy for women with sexual interest or arousal disorder.⁷ The details are specialist, but the principle is simple: desire often improves when attention, body awareness, anxiety and sexual communication improve.

Supplements are a weak area. Many products marketed for libido contain stimulants, undeclared drug-like ingredients or hormone claims that do not match evidence. Be especially cautious with "testosterone boosters", yohimbine, high-dose herbal stacks, online peptides and products promising instant arousal. Use the stack builder to screen supplement stacks for duplication and interaction risks, and use insights when a sexual health product sounds too confident.

Hormones and testosterone

For men, testosterone treatment is not a general libido tonic. It can help when true hypogonadism is present, but it can also suppress fertility, raise haematocrit, worsen acne or sleep apnoea, and mask the real cause if used casually. The Endocrine Society also recommends against starting testosterone in men planning fertility in the near term and in several higher-risk situations, including untreated severe obstructive sleep apnoea and recent major cardiovascular events.⁴

For women and people registered female at birth, testosterone is nuanced. The global consensus position statement says the only evidence-based indication for testosterone therapy in women is hypoactive sexual desire disorder in postmenopausal women, after a full clinical assessment.⁶ The ISSWSH clinical practice guideline also frames systemic testosterone as a treatment for carefully assessed hypoactive sexual desire disorder, not a blanket treatment for fatigue, brain fog or low mood.⁵

In the UK, NICE recommends considering testosterone supplementation for low sexual desire associated with menopause if HRT alone is not effective.² The British Menopause Society states that the evidence-based indication is persistent low libido in postmenopausal women after other contributing factors have been addressed, and notes that there are no testosterone products for female use licensed in the UK.³

A practical plan

Start with a two-week pattern log. Track sleep, alcohol, stress, mood, medicines, cycle or menopause symptoms, pain, erections or lubrication, and whether desire is absent everywhere or mainly in a specific context. This is not homework for blame. It helps separate body load, relationship load and medical triggers.

Then choose the first bottleneck. If pain or dryness is present, treat that first. If a medicine change lines up with the drop, book a medication review. If mood is low, treat mood as a health issue rather than hoping libido will return by force. If sex has become pressured, take intercourse off the table temporarily and rebuild closeness without performance demands. If symptoms point to testosterone deficiency, thyroid disease, diabetes, anaemia or menopause, ask for targeted assessment.

The health library can help you compare low libido with related problems such as menopause symptoms, thyroid disease, diabetes, sleep apnoea and depression. If you want a structured route through private or NHS options, start here and build a short, evidence-based question list before the appointment.

This article is educational and does not constitute medical advice, diagnosis, or a treatment recommendation. Medication uses described as “off-label” are not licensed for that purpose in the UK and should only be considered under qualified clinical supervision. Always speak to your GP, pharmacist, or a registered specialist before starting, stopping, or changing any treatment. If you have severe or alarm symptoms - unintentional weight loss, blood in your stool, difficulty swallowing, persistent vomiting, a fever, or severe pain - seek urgent medical care.