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The femtech revolution: understanding female hormones and why they matter

By Dr Nicky Keay, Honorary Clinical Lecturer, Division of Medicine, UCL

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Hormones are key to all aspects of physical and mental health, says Keay

Female hormones are the most complex of all the hormone networks, which partly explains why to date, this is often an unresearched and less well understood area of hormone health.

Fortunately, as a female doctor, I embrace a challenge, especially one so important as female hormone health.

Hormones direct health

Over 2,500 years ago Hippocrates, the father of medicine, advocated for each individual “just the right amount of nourishment and exercise” as “the surest way to health”.

Hippocrates was effectively articulating what we would now call personalised preventative medicine. However, we had to wait over 2,000 years to understand why Hippocrates was right.

The answer lies in the actions of our hormones “setting in motion” the surest way the health. The word hormone is derived from ancient Greek meaning “setting in motion”, reflecting the mechanism of action of a hormone in determining gene expression.

Hormones bring DNA to life by directing which proteins to produce, at what time and how much.

Female hormones

Female hormones orchestrate many aspects of health and well-being, not exclusively reproduction, although that is their evolutionary purpose.

For example, oestradiol – the most active form of oestrogen – is the sex steroid hormone that reigns supreme when it comes to musculoskeletal health.

Low levels of oestradiol are associated with poor bone health, increase risk of fracture and soft tissue injuries. Oestradiol also plays an important role in cardiovascular health. Low levels increase the risk of cardiovascular disease, which is the main cause of death in menopausal women (not breast cancer).

Female ovarian hormones support neurological and cognitive function, together with mood. Low levels of these hormones, in both young and older women, are associated with low mood and “brain fog”.

Harnessing Hormones

As outline by Hippocrates, our lifestyle behaviours play an important part in determining our health. This connection between our behaviours and health is facilitated by hormone networks.

A hormone system often runs according to its own individual biological clock. To harness hormones effectively to optimise health, the trick is to try and harmonise the timing of our behaviours with our internal hormone clocks. However, what happens when the hormone clock in question is very complex and changes over the lifespan?

Female hormone choreography

Out of all the hormone networks, that of the menstrual cycle is the most complex and beautiful.

Each woman will have subtilties of individual timing, levels and biological response relating to this hormone choreography. This is why generic advice is not always helpful or appropriate.

Medical interpretation of female hormone measurements, taken in the clinical context of the individual is essential.

For example, irregular or lack of menstrual periods is an external manifestation that something is amiss with internal hormone choreography. Identifying the most likely cause requires forensic medical interpretation of results, in the clinical context.

For a woman of reproductive age, where regular cyclical variation of hormones would be expected, any disruption of hormone networks, in the absence of medical conditions, could indicate an imbalance in behaviours.

On the other hand, with advancing age, female hormones are expected to wind down in the lead up to menopause when the ovaries retire from their production of eggs and hormones.

Distinguishing between the underlying causes of female hormones dysregulation is essential to be able to direct the individual woman to the most appropriate course of action.

Understanding female hormone choreography

It is inspiring to see the expansion of femtech to provide support for many aspects of female health.

However, when it comes to female hormone choreography over the lifespan, this requires a deep medical understanding of these hormones to unravel the complexities and distinguish between expected biological variation and signs of hormone mistiming.

Artificial Intelligence (AI) techniques are becoming more widespread across many areas of medicine and healthcare.

However, when it comes to female hormones it is more a case of augmented intelligence. Ultimately, even the cleverest mathematical and technological techniques will come to nothing if not directed by medical understanding and interpretation.

On a positive note, appropriately applied, backed by clinical validation and research, these emerging clinical tools will empower women to tune into their personal female hormone choreography and make informed decisions towards the “surest way to health”.

Hormones, Health and Human Potential is out on October 28.

Join one of Dr Nicky Keay’s free discussion events below:

Cambridge

UCL, London

 

Insight

WUKA and Royal Yachting Association partner to support women and girls in sailing

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WUKA has announced a groundbreaking partnership with the Royal Yachting Association (RYA), including RYA Scotland and RYA Northern Ireland, supporting women and girls in sailing.

Building on WUKA’s growing #TackleAnything campaign – which has already reached thousands of girls across sports in the UK – this collaboration brings practical period solutions into sailing.

Together, WUKA and the RYA are committed to breaking down barriers so periods never limit confidence, participation, or performance on the water.

Ruby Raut, WUKA founder & CEO, said: “Partnering with the RYA has been incredibly important for us at WUKA.

“Sailing is an amazing way for women and girls to build confidence, and periods shouldn’t hold anyone back from enjoying the water or reaching their full potential.

“Through this partnership and our #TackleAnything campaign, we’re proud to provide practical solutions and innovative products that help female sailors feel comfortable, confident, and free to focus on learning, performing, and having fun.

“Breaking down barriers and supporting women to tackle anything — on land, at sea, and everywhere in between – has never felt more meaningful.”

WUKA, which stands for Wake-Up Kick Ass, shares the RYA’s commitment to inclusivity and empowerment.

In 2023, WUKA launched #TackleAnything, a campaign supporting women, girls and sportspeople with periods. Since its launch, the initiative has reached 3,576 girls across 46 clubs and partnered with a range of sports across the UK – from Scottish Gymnastics to Titans wheelchair basketball – helping young athletes play without limits and stay confident, comfortable, and in the game.

The brand offers period-friendly aquatic apparel and practical solutions that help women train and compete with freedom of movement and total assurance.

Through this partnership, WUKA will provide innovative period swimwear for young sailors across key RYA programmes, including the NI Sailing Team, the RYA Scotland Performance Pathway Programme, and the British Sailing Pathways Talent Academies.

By combining WUKA’s mission to challenge stigma with the RYA’s commitment to inclusion, the partnership ensures young sailors can focus on what matters most – learning, performing, and enjoying their time on the water – with confidence and comfort. RYA members will also receive a 10 per cent discount on WUKA products.

Sailing offers incredible benefits for women and girls, but time on the water can present unique challenges -particularly during menstruation.

Together, WUKA and the RYA are providing practical solutions that remove these barriers, helping young sailors participate fully and confidently in the sport.

Sara Sutcliffe, RYA CEO, said: “At the RYA, we have been making strides to break down barriers for women of all ages to help ensure they can experience the water in a supportive and positive environment.

“From education workshops and practical sessions, we want to make sure our female sailors are empowered and this partnership is another great example of how we can demonstrate possible tools to equip them to succeed”.

This partnership is part of the RYA’s wider commitment to making sailing a sport where women and girls can thrive. Alongside initiatives such as the Female Futures Group, the Women’s Race Officials Programme and all new Talent Academy Female Future’s Camps; it demonstrates a continued focus on removing barriers and creating meaningful opportunities across every stage of the sailing.

WUKA’s involvement ensures that practical solutions are available on the water, from innovative period swimwear to support resources, helping young sailors feel fully equipped and confident during training and competition.

By integrating these tools into RYA programmes, WUKA brings a new level of comfort and assurance to female athletes, allowing them to focus entirely on performance, enjoyment, and growth in the sport.

For any women and girls looking to learn more about sailing, visit www.rya.org.uk.

For more information on WUKA visit www.wuka.co.uk.

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Insight

Study links changing population to low London screening rates

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London’s shifting population is holding down breast screening uptake, experts have said, with the capital at 62.8 per cent in 2024, below the NHS’s acceptable 70 per cent threshold.

The London Assembly Health Committee recently heard that the capital faces distinct challenges compared with the rest of the country and that these issues must be addressed.

Josephine Ruwende, a cancer screening lead at NHS England, said frequent moves within the rented sector and the cost-of-living crisis pushing people out of London had made it difficult to reach eligible patients, which she described as “population churn”.

She said: “This is people changing addresses and then not updating their GP, this then affects the invitation process because GP details are used to identify individuals who are eligible.

“In boroughs where we have the highest population churn, we see it strongly associated with lower uptake.”

She noted that even in the wealthiest boroughs there can be high levels of movement, with around 40 per cent of residents changing address within a year.

Such areas also tend to have more people who own second homes or spend long periods abroad, making it harder for the NHS to keep contact details up to date.

As a result, screening invitations may be sent to out-of-date addresses or to people who are overseas.

Leeane Graham, advocacy lead at Black Women Rising, which supports women of colour with a cancer diagnosis, said there were cultural barriers, fear and a mistrust of the health service due to previous experience within communities.

She said: “If you’ve never been for a breast screening before, the thought of having a mammogram can be really, really terrifying.”

Helen Dickens, from Breast Cancer Now, said other reasons included a lack of understanding of breast screening, along with concerns about discomfort, trust and practical issues such as travel.

She said: “We have amazing public transport and we feel that we’ve got great accessibility, but we also know that we don’t have screening centres in every borough.

“We know that for some women that barrier of transport and access will still be a really big reason why they’re not attending screenings.”

NHS London launched its first screening campaign last year in response to the figures, aiming to increase detection at an earlier stage.

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The hidden cost of “business as usual” in gynecologic surgery

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A Common Surgery with Outsized Consequences

Hysterectomy and myomectomy are among the most frequently performed surgeries worldwide.

Minimally invasive and robotic approaches have delivered clear benefits at the point of care, including shorter hospital stays, faster recovery, and fewer complications.

To remove the uterus or fibroids through small incisions, surgeons use a technique known as morcellation, in which tissue is cut into smaller pieces for extraction during surgery.

However, when tissue is cut without containment, those short-term gains can be offset by downstream harm.

The risks fall into three interconnected categories:

  • dissemination of undiagnosed malignancy
  • spread of benign tissue, including endometriosis and parasitic fibroids
  • legal and financial exposure linked to off-label device use

Crucially, these costs often surface years after the original procedure and rarely where the original cost savings were realized.

Cancer Dissemination: A Known and Preventable Risk

The risk of occult uterine malignancy in women undergoing surgery for presumed benign fibroids is well documented.

The U.S. Food and Drug Administration has estimated this risk at approximately 1 in 350 women, prompting repeated safety communications recommending tissue containment during morcellation.

When morcellation is performed without containment, undiagnosed cancer will be dispersed throughout the abdominal cavity, effectively upstaging disease from localised to disseminated.

The clinical implications are profound, and so are the economic consequences.

Treatment costs for early-stage uterine cancer typically range from $40,000 to $60,000. Once disease becomes disseminated, costs can exceed $150,000 to $300,000, excluding indirect costs such as lost productivity, long-term disability, and caregiver burden.

Beyond treatment expenses, litigation related to morcellation-associated cancer spread has resulted in multi-million-dollar settlements, particularly during the power morcellation litigation wave of the mid-2010s. Several cases explicitly tied disease progression to tissue dissemination during surgery.

From a system perspective, a single preventable dissemination event can negate the cost savings of hundreds of minimally invasive procedures.

Benign Tissue Seeding: The Long Tail of Surgical Cost

Cancer is not the only concern.

Uncontained morcellation has also been associated with the spread of benign tissue, including parasitic fibroids and iatrogenic endometriosis, conditions that may present years after the index surgery.

Endometriosis alone represents one of the most expensive chronic gynecologic conditions. Multiple health economic studies estimate annual per-patient costs of $12,000 to $16,000, with lifetime costs exceeding $100,000, driven by repeat surgeries, chronic pain management, hormonal therapy, and fertility interventions.

While the financial impact may surface years later, downstream harm is increasingly traced back to the index procedure, including the choice between FDA-cleared containment and off-label alternatives used during tissue extraction.

Off-Label Use and the Quiet Accumulation of Liability

One of the least visible, but most consequential, dimensions of morcellation risk lies in off-label device use.

Many tissue bags currently used during morcellation are not FDA-cleared for prevention of tissue spillage during organ cutting and removal. While off-label use is common in medicine, it carries distinct legal and financial implications when complications occur.

Risk management guidance from MedPro Group, one of the largest medical malpractice insurers in the United States, has repeatedly warned that off-label use increases professional liability exposure in three key ways:

1. Burden of justification

When an FDA-cleared alternative exists, the legal burden shifts to the surgeon to prove that off-label use met the standard of care.

2. Informed consent vulnerability

Standard consent language may be insufficient for off-label device use, increasing exposure to failure-to-warn claims if complications arise.

3. Changed liability dynamics

Off-label use alters traditional liability dynamics, increasing scrutiny on clinical decision-making at the hospital and surgeon level.

Legal scholarship published in Clinical Orthopaedics and Related Research has echoed these concerns, noting that courts increasingly allow off-label status to be considered in malpractice cases, particularly when patient harm occurs and safer alternatives were available.

Recent U.S. court decisions have further reinforced that while off-label use is generally permitted, it is not immune from civil liability and, in rare but serious circumstances, criminal consequences when tied to demonstrable patient harm.

FDA Guidance Exists, Adoption Lags Behind

Regulatory expectations around morcellation are no longer ambiguous. The FDA has consistently called for tissue containment during tissue cutting to mitigate the risks of cancer and tissue dissemination.

Yet real-world adoption remains inconsistent.

A 2025 survey reported by News-Medical found widespread gaps in safe tissue containment during laparoscopic gynecologic surgery.

Respondents cited variability in training, institutional protocols, and access to FDA-cleared containment systems. Many surgeons reported reliance on improvised or non-cleared solutions despite growing awareness of regulatory and legal risk.

The result is a widening gap between guidance and practice, one that is increasingly visible to regulators, insurers, and hospital leadership.

Who Ultimately Pays?

The economic impact of uncontained morcellation does not fall on a single stakeholder.

  • Hospitals face litigation exposure, rising malpractice premiums, re-operations, and reputational risk.
  • Surgeons shoulder personal liability, heightened scrutiny around informed consent, and evolving standards of care.
  • Payers absorb downstream oncology costs, chronic disease management, and repeat interventions.
  • Patients bear the heaviest burden, including preventable morbidity, fertility loss, financial toxicity, and erosion of trust.

Taken together, these costs far exceed the price of prevention.

From Clinical Risk to Market Response

This growing recognition of risk has begun to reshape the market.

Before regulatory scrutiny intensified, power morcellation was widely adopted because it saved time, reduced operating room burden, and supported high procedural throughput.

It represented a multi-billion-dollar global market, supported by major surgical device manufacturers and deeply embedded in minimally invasive gynecologic practice.

The withdrawal of power morcellation from many hospitals did not eliminate the clinical need for efficient tissue extraction. Instead, it created a prolonged gap between surgical efficiency and acceptable risk.

That gap is now beginning to close.

With the emergence of FDA-cleared tissue containment systems designed specifically for morcellation, hospitals are reassessing whether power morcellation can be responsibly reintroduced in a manner aligned with regulatory guidance, patient safety, and liability mitigation.

This has significant implications for operating room efficiency, surgeon ergonomics, and system-wide cost management.

One example is Ark Surgical, a U.S.-focused surgical technology company advancing safety-first approaches to tissue extraction.

Its double-wall, airbag-like LapBox containment chamber was developed to support FDA-aligned morcellation while integrating into existing laparoscopic workflows, an increasingly important consideration as hospitals evaluate not just procedural efficiency, but long-term risk exposure.

Ark Surgical is currently in an active investment round, reflecting broader investor interest in technologies that address regulatory-driven risk while unlocking previously constrained markets.

More broadly, capital is flowing toward solutions that make it possible to restore clinical efficiency without reintroducing legacy risk.

The Cost Question Is No Longer “If,” but “When”

Healthcare systems already absorb the cost of uncontained morcellation through litigation, chronic disease management, repeat interventions, and loss of trust.

What has changed is visibility.

As clinical data, regulatory expectations, and market solutions converge, the question is no longer whether containment matters, but whether healthcare systems can afford to continue treating it as optional.

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