Hormonal health
Oestrogens play a hidden role in cancers, inhibiting a key immune cell

Oestrogens are known to drive tumour growth in breast cancer cells that carry its receptors, but a new study by Duke Cancer Institute researchers unexpectedly finds that oestrogens play a role in fuelling the growth of breast cancers without the receptors, as well as numerous other cancers.
The researchers describe how oestrogens not only decrease the ability of the immune system to attack tumours, but also reduce the effectiveness of immunotherapies that are used to treat many cancers, notably triple-negative breast cancers. Triple-negative breast cancers are an aggressive form of disease that are negative for oestrogen, progesterone, and the HER2 receptor proteins
Informed by retrospective analysis of patient data and experiments in mice, the researchers found that anti-oestrogen drugs reversed the effects of oestrogens, restoring potency to immunotherapies.
“The treatment for triple-negative breast cancer has been greatly improved with the advent of immunotherapy,” said senior author Donald McDonnell, Ph.D., professor in the departments of Medicine, Pharmacology and Cancer Biology, and Cell Biology at Duke University School of Medicine.
“Developing ways to increase the anti-cancer activity of immunotherapies is a primary goal of our research,” McDonnell said.
“Here we have found a simple way bolster the effectiveness of immunotherapy for this type of breast cancer and the benefit was even seen in other cancers, including melanoma and colon cancers.”
McDonnell and colleagues, including lead author Sandeep Artham, a postdoctoral associate in the McDonnell lab, focused on a type of white blood cell called eosinophils, which are typically activated during allergic reactions and inflammatory diseases.
Eosinophils have recently been identified as important in tumours, and a phenomenon called tumour associated tissue eosinophilia, or TATE, is associated with better outcomes among patients with multiple types of cancer, including colon, oesophageal, gastric, oral, melanoma and liver cancers.
In their studies, the Duke team described how oestrogens decrease the number of eosinophils and TATE in mice. The hormone contributes to increased tumour growth in oestrogen receptor-negative breast cancer tumours and in melanoma tumours, which do not rely on oestrogen receptors for tumour growth.
Conversely, anti-oestrogen therapies inhibited oestrogen receptor signalling and enhanced the efficacy of immunotherapies, slowing tumour growth.
“These findings highlight the importance of oestrogen-receptor signalling as a regulator of eosinophil biology and TATE and highlight the potential near-term clinical application of anti-oestrogen drugs to increase the benefits of immunotherapies in multiple tumour types,” McDonnell said.
He said clinical trials are being planned using an investigational anti-oestrogen drug called lasofoxifene among patients with triple-negative breast cancers.
The research has been published in the journal Science Advances.
Menopause
Menopause hormone treatment may ease brain fog, study suggests

Estriol treatment may ease menopause brain fog and other cognitive symptoms, according to a small observational study of 20 menopausal women.
The study involved menopausal women with an average age of 53.
They underwent an initial assessment of their cognitive symptoms before receiving a customised regimen of estriol and progesterone for 12 months.
Estriol is a natural form of oestrogen that occurs during pregnancy and has been used in Europe and Asia to treat menopausal symptoms including hot flushes and genitourinary symptoms.
It differs from estradiol, the most commonly used oestrogen hormone therapy in the US, by binding primarily to a different oestrogen receptor in the brain.
Previous research has shown that estriol may help protect brain cells and reduce brain atrophy in the hippocampus, the region responsible for learning and memory.
After 12 months of treatment, participants reported significant reductions in brain fog, concentration problems, working memory problems, slower processing speed, verbal memory problems and problem-solving difficulties compared with before treatment.
Senior author Dr Rhonda Voskuhl, a neurologist and member of the Comprehensive Menopause Center at UCLA Health, said: “Oestrogen plays a well-documented role in protecting the brain, yet there are still no approved type and dose of treatment that specifically targets the cognitive symptoms so many women experience during menopause.
“Women are often told to simply live with brain fog, when in fact there is a neuroscience basis for it, and potentially a way to address it. That gap in care is what motivated us to look more closely at estriol.”
Researchers also examined estriol treatment in midlife female mice to investigate how the hormone treatment might work.
Estriol reduced markers of brain pathology in the hippocampus and improved measures of working and spatial memory in the animals.
The findings are preliminary. The study was a small case series with no placebo group or randomisation, meaning the results may not apply to broader populations.
The researchers said larger placebo-controlled clinical trials using brain imaging and standardised cognitive testing are needed to confirm the findings on cognitive symptoms.
The treatment used in the study was invented by Voskuhl and is patented by UCLA. UCLA licenses the patent to CleopatraRX, which sells the treatment as PearlPAK. Voskuhl serves as a medical adviser to CleopatraRX.
Menopause
Deaf women “excluded” from menstrual health conversations at UK unis

Deaf women face barriers to menstrual health information and support at UK universities, according to a study involving 12 BSL users.
Researchers believe it is the first study of its kind.
Participants described difficulties discussing sensitive health issues because universities and healthcare services often rely on hearing-centred communication systems.
The study was led by Professor Jemina Napier from Heriot-Watt’s School of Social Sciences and involved interviews and co-design workshops with 12 deaf women who use British Sign Language (BSL) and work or study in UK universities.
Napier said: “Our findings show that deaf women face many of the same menstrual health challenges as hearing women, but they also encounter additional barriers because information and support are rarely designed around their language and communication needs.
“The burden of constantly adapting to hearing-centred systems can leave deaf women feeling excluded from conversations about their own health.”
Participants reported a lack of accessible information about menstruation, endometriosis, fibroids, perimenopause and menopause, despite working in highly educated environments.
They also reported feeling excluded from informal conversations where hearing colleagues often share experiences and learn about menstrual health.
Researchers identified four main issues affecting participants: communication, access to information, interpreter dynamics and factors including ethnicity, geography and additional disabilities.
Many participants said they preferred discussing menstrual health directly in BSL but rarely had that opportunity because managers and healthcare professionals did not sign.
Instead, they often communicated through interpreters or written English, which some said reduced privacy, comfort and confidence when discussing personal health issues.
Napier said: “A recurring theme was that of the ‘deaf tax’, which refers to the additional emotional and practical effort deaf women need to continually undertake to explain their needs or secure support.
“It’s ongoing emotional labour and fatigue and reduced participation in menstrual-health related activities.”
BSL interpreters were seen as essential, but participants said their involvement could raise concerns about confidentiality, trust and accuracy, particularly when discussing sensitive topics.
Several highlighted that male interpreters appeared uncomfortable discussing menstrual health.
The researchers also found that existing menstrual health information is largely produced in English and then translated into BSL, rather than being created in BSL from the outset.
Abigail Gorman, deaf independent facilitator, health policy consultant and co-author of the report, said: “To be in charge of your own health, you need to be able to recognise when something’s wrong, name it, and ask for help – in an appointment where you can actually be understood. That’s the whole chain.
“But if the information was never accessible in the first place, deaf women can’t even get to step one. If the appointment itself isn’t accessible either, that breaks the chain all over again, when it matters most.
“BSL-first health resources aren’t a nice-to-have; they’re how deaf women get to be equal participants in decisions about our own health.”
Napier said: “The deaf women we interviewed want more visual, culturally appropriate resources designed specifically for them – not a crude translation of existing material.
“BSL accessibility should be the default for menstrual health information and events.
“We need improved interpreter policies and BSL-first educational resources.
“The university sector should also establish a UK-wide, deaf-led health and wellbeing network.
“All these changes would reduce communication barriers and improve access to menstrual health support for deaf women working in higher education.”
Menopause
Menopausal women posing as men to buy testosterone amid NHS access issues

Menopausal women in Wales are posing as men to buy testosterone online amid difficulties accessing NHS prescriptions, a consultant has said.
Access to testosterone for postmenopausal women varies between Welsh health boards despite a “very sharp increase” in referrals, according to menopause specialist Dr Michelle Olver.
Olver said she had seen women with testosterone levels up to 12 times the safe level after they bought the hormone online, putting them at risk of permanent side effects.
She said it was “incredibly sad” to see women lying to obtain the drug online because they were being “denied access to something they need”, but said proper counselling and monitoring were needed.
Olver, a consultant in sexual and reproductive health, said: “We want to maintain women in female physiological range for testosterone. We don’t want them to have sky-high levels.
“When you persistently have very high testosterone levels you can get undesirable permanent side effects.
“Nobody wants to have baldness, deepening of the voice or enlargement of the clitoris.”
Testosterone occurs naturally in women, but levels decline with age.
It is prescribed after menopause to help with reduced libido, while research is under way in Wales into whether reported effects on cognition and energy can be scientifically supported.
Women are advised to have a baseline blood test and regular tests afterwards to ensure levels remain within the female range.
Emma Thomas, co-founder of menopause support group Menopals Cardiff and Vale, said members had reported difficulties accessing testosterone through the NHS.
She said: “We hear a lot of women saying their GP thinks there’s no need for it or their surgery won’t prescribe it.”
Prescribing arrangements differ across Wales’ seven health boards, which use a traffic light system. In some areas testosterone is classified as red, meaning only specialists can prescribe it.
There are two amber options.
One involves a GP seeking support or agreement from a hospital specialist that testosterone is appropriate for a patient.
The other requires a hospital specialist to start and monitor treatment under a shared care agreement, with GPs continuing to prescribe it.
The Welsh government said: “All health boards are expected to adhere to the NICE guidelines on identification and management of menopause including providing individualised care when prescribing HRT.
“We are aware this may include some practitioners prescribing testosterone for some women.
“We expect all health boards to conform to any recommendation made by NICE in relation to prescribing testosterone when its guidance is published.”
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