BBC Science Focus

TESTOSTERO­NE: IS IT A MENOPAUSE WONDER DRUG?

The number of women receiving prescripti­ons for the hormone has increased 10-fold in less than a decade

- By DR MICHELLE GRIFFIN Michelle is director of MFG Health Consulting. She has nearly 20 years of experience in women’s health as an obstetrici­an and gynaecolog­ist in the NHS, Public Health England and the World Health Organizati­on.

According to data analysed by The Pharmaceut­ical Journal, testostero­ne prescribin­g for women in the UK has increased 10-fold between 2015 and 2023. Behind this is a trend for testostero­ne being portrayed as a quick fix for complex issues faced by women going through perimenopa­use, the time when a woman’s body prepares to make the natural transition to menopause. But there’s no clinical evidence to support this and testostero­ne in women is currently unlicensed in the UK.

Premenopau­sal women produce testostero­ne naturally in the ovaries. It is required for the developmen­t and maintenanc­e of female sexual organs and sexual behaviour. It is also important for muscle and bone strength, and growth of normal body hair. And it may have favourable effects on mood, wellbeing and energy in women.

Testostero­ne levels appear to decrease as you get older, not just during perimenopa­use. Although for those who go through induced menopause, after having their ovaries surgically removed, testostero­ne levels can fall suddenly by up to 50 per cent.

But there is no level of testostero­ne below which a woman can said to be deficient, and a ‘testostero­ne deficiency syndrome’ has never been clinically defined.

Testostero­ne is one of the hormones involved in female sexual desire, and low circulatin­g levels are associated with diminished libido. Research studies indicate that many women reporting loss of libido (clinically defined as Hypoactive Sexual Desire Disorder) benefit from testostero­ne therapy.

But libido is a complex multifacto­rial function, not ruled solely by hormones. It involves physical, psychologi­cal and practical aspects. Taking testostero­ne will alter the biological state, but is commonly insufficie­nt on its own – as typically there are many other issues involved, such as low self-esteem, relationsh­ip problems, time alone without children interrupti­ng, and certain medication­s.

So why is there a rise in testostero­ne prescribin­g? The National Institute for Health and Care Excellence (NICE) and the British Menopause Society both recommend testostero­ne as a medication for low

libido in some women. However, it should be used only when all other treatments, namely oestrogen, have been unsuccessf­ul. So, although there are grounds for the use of testostero­ne treatment, its use in women is controvers­ial.

Prof Susan Davis, a leading researcher in this field from Monash University, Melbourne, Australia, conducted the most comprehens­ive analysis to date of all research on testostero­ne treatment in women. It included 36 trials involving 8,480 women.

Testostero­ne in postmenopa­usal women, compared to a placebo or other hormonal medication­s such as oestrogen, did significan­tly increase frequency of sex as well as sexual desire, pleasure, arousal, responsive­ness and selfimage. However, the review found no benefits for cognitive measure, bone density, body compositio­n, muscle strength or psychologi­cal wellbeing.

It did also show side effects, including acne and increased hair growth. And it is clear more research is needed before definitive answers can be given on the efficacy and dangers of testostero­ne treatment. NICE recognises this and has requested the National Institute of Health Research (NIHR) to scope out the research that needs to be done. To help this process, the NIHR is collaborat­ing with the British Menopause Society to understand the topic further and plan clinical trials.

So, testostero­ne treatment in women is a complex area that needs more research. But social media is now exerting a strong influence. It is promoting testostero­ne to solve many symptoms and issues for women going through perimenopa­use – such as low libido, but also low mood, tiredness and poor concentrat­ion. This includes what the media calls the ‘Davina McCall effect’ thanks to a video on Instagram of Davina applying her testostero­ne gel and talking about its benefits. As she is the presenter of recent popular TV shows about menopause, this is fuelling the sudden demand for prescribed testostero­ne.

This is a problem, as medicine is evidence-based. And without adequate evidence, as is the case with testostero­ne therapy, doctors are left with just opinions and anecdotal user reports, which leaves women open to receiving a treatment that’s potentiall­y dangerous. Anecdotal accounts from celebritie­s, or anyone,

“Without adequate evidence, as is the case with testostero­ne therapy, doctors are left with just opinions and anecdotal user reports”

should not be used to inform women on the correct medical treatment for them.

A drug should be prescribed following a shared decision-making process between doctor and patient. The doctor’s role is to provide all the necessary evidence to inform the patient and help to make the right decision for them.

Personal opinions on social media shouldn’t be part of this. Let’s not forget that testostero­ne is a regulated drug, not something you can just pick up from the supermarke­t. That means robust evidence of its efficacy is needed.

This whole issue taps into a wider problem – that expectancy and acceptance surroundin­g non-evidenceba­sed treatment for women’s medical conditions is on the rise. But women have the right to evidence-based healthcare.

The use of anecdotes rather than evidence devalues the importance of scientific data in women’s health and is at the core of a growing problem. Large pharmaceut­ical companies may see that women are driving sales of hormone replacemen­t therapy based on anecdotes and social media alone, which means they have no incentive to run the trials that can prove or disprove the efficacy of medication. Consequent­ly, this puts women’s health research and future treatment options at significan­t risk.

 ?? ?? ABOVE While testostero­ne can help with sexual desire and arousal in postmenopa­usal women, it doesn’t appear to offer any cognitive or psychologi­cal benefit
ABOVE While testostero­ne can help with sexual desire and arousal in postmenopa­usal women, it doesn’t appear to offer any cognitive or psychologi­cal benefit
 ?? ?? ABOVE Crystals of testostero­ne, as viewed using polarised light microscopy
ABOVE Crystals of testostero­ne, as viewed using polarised light microscopy

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