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Where science meets life, for every body

We run the world’s largest dataset on female reproductive health and turn our cutting-edge, novel research into personalised care solutions, for the modern woman.

1 in 5 women

experience pain during intercourse with no effective medical treatment available

Nearly 70% of women

don’t have a 28 day cycle, despite common medical discourse referencing this as the norm

Over 80% of women

experience hormonal symptoms, with limited research on symptoms outside the context of disease

Findings from our Reproductive Report, 2022

Generic female health advice is harming us

There’s no one-size-fits-all when it comes to our reproductive health—every body is unique. But the current healthcare system still relies on a handful of small-scale studies, with out-of-date data, to inform generic approaches to female health.

That's why we exist. We’ve built the largest global dataset on female reproductive health, with over 835,000 data variables. This novel research fuels our personalised at-home testing and the most advanced diagnostic tool in female reproductive health—improving the lives of real women, in real-time.

Join us in the Reproductive Revolution and take your first step by participating in our online health assessment.

Meet the new standard of scientific rigour in female health

Radically reducing time to diagnosis

From years to weeks for multiple, under-researched health conditions

Drastically improving patient outcomes

By providing personalised solutions tailored to you and your unique biology

Providing up-to-date evidence-based clinical advice

From diverse, expansive datasets reflective of the global female population

Want to help forward women’s health research?

We regularly run clinical trials and novel research studies. Sign up here if you’re interested in taking part.

https://www.endocrine.org/https://www.asrm.org/https://alphaconference2022.org/https://www.eshre.eu/https://www.rcog.org.uk/https://cogi-congress.org/about-cogi/

Our research in action

Scroll to see the latest news from our research team, including our latest publication announcements and conference presentations.

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An umbrella review of meta-analyses regarding the incidence of female-specific malignancies after fertility treatment

Authors: Srdjan Saso, Jen F Barcroft, Lorraine S Kasaven, Nicolas Galazis, Bríd Ní Dhonnabháin, Karen J Grewals, Timothy Bracewell-Milnes, Benjamin P Jones, Natalie Getreu, Maxine Chan, Anita Mitra, Maya Al-Memar, Jara Ben-Nagi, J Richard Smith, Joseph Yazbek, Dirk Timmerman, Tom Bourne, Sadaf Ghaem-Maghami, Jan Y Verbakel

See publication

Predictors of successful expectant and medical management of miscarriage: A systematic review

Authors: Sughashini Murugesu, Emily Braun, Srdjan Saso, Tom Bourne

See publication

Lab-based semen parameters as predictors of long-term health in men-a systematic review

Authors: Silvia Nedelcu, Srisailesh Vitthala, Abha Maheshwari

See publication

The New FIGO Ovulatory Disorder Classification: PRO and CON

Authors: Balen, A. H., Munro, M. G., O’Neill, H. C., Lunenfeld, B., & Fauser, B. C. J. M.

See publication

Capillary blood collection tubes containing serum separator gel result in lower measurements of oestradiol and total testosterone

Authors: Vasavan, T., Getreu, N., Rutter, E., Biggs, R., Woolley, T., Timpson, A., & O'Neill, H. C.

See publication

Does advanced paternal age affect outcomes following assisted reproductive technology? A systematic review and meta-analysis

Authors: Sughashini Murugesu, Lorraine S. Kasaven, Aviva Petrie, Anusiya Vaseekaran, Benjamin P. Jones, Timothy Bracewell-Milnes, Jennifer F. Barcroft, Karen J. Grewal, Natalie Getreu, Nicolas Galazis, Flavia Sorbi, Srdjan Saso, Jara Ben-Nagi

See publication

A comparison of fertility preservation outcomes in patients who froze oocytes, embryos, or ovarian tissue for medically indicated circumstances: a systematic review and meta-analysis

Authors: Bríd Ní Dhonnabháin, Nagla Elfaki, Kyra Fraser, Aviva Petrie, Benjamin P Jones, Srdjan Saso, Paul J Hardiman, Natalie Getreu

See publication

Age-related fertility decline: is there a role for elective ovarian tissue cryopreservation?

Authors: Lorraine S Kasaven, Srdjan Saso, Natalie Getreu, Helen O'Neill, Timothy Bracewell-Milnes, Fevzi Shakir, Joseph Yazbek, Meen-Yau Thum, James Nicopoullos, Jara Ben Nagi, Paul Hardiman, Cesar Diaz-Garcia, Benjamin P Jones

See publication

Genetic associations with polycystic ovary syndrome: the role of the mitochondrial genome; a systematic review and meta-analysis

Authors: Moosa, A., Ghani, M., & O'Neill, H. C.

See publication

Impact of limited reproductive health awareness on PCOS diagnosis timelines and the need for improved patient education

Authors: Zoya Ali, Tharni Vasavan, Meeladah Ghani, Eliza Waskett, Natalie Getreu, Helen O’Neill

See publication

PCOS symptom recognition and diagnosis: Time for better education and clinical resources

Authors: Zoya Ali, Tharni Vasavan, Meeladah Ghani, Eliza Waskett, Natalie Getreu, Helen O’Neill

See publication

Impact of limited reproductive health awareness on PCOS diagnosis timelines and the need for improved patient education

Authors: Z Ali, T Vasavan, G Meeladah, W Eliza, N Getreu, H O’Neill

See publication

Mosaic embryos – are they accurately detected by PGT-A?

Authors: T Popa, E Whitney, M Kanani, L Xanthopoulou, E Bakosi, C Davis, H O'Neill, C Ottolini

See publication

The current status of female reproductive health and preconception behaviour in the UK: cross-sectional data from over 135,145 Hertility users

Authors: H O'Neill, T Vasavan, S Rodrigues Vaz, L Lawrie, N Getreu, A Timpson

See publication

Data from 143,251 women indicates that black women access at-home fertility testing services later in life compared to white women in the United Kingdom

Authors: R Relton, S Rodrigues Vaz, N Getreu, H O’Neill, T Vasavan

See publication

Embryo Selection By Ai: Are We Playing Fair? Interrogating The Sex Bias Question Through Embryo Developmental Morphokinetics And PGT-A Data.

Authors: Teodora Popa, BSc, MSc, Matthew Lau, MBBS, Chloe He, BEng, Alexa Zepeda, MD, MSc, Cristina Hickman, PH.D., Colin Davis, MBBS, MD, Christian S. Ottolini, BSc, PhD, Helen C. O'Neill, B.SC., M.SC., PH.D.

See publication

Concordance of reproductive and thyroid hormone measurements betweeen venipuncture and capillary blood samples through the menstrual cycle

Authors: Natalie Getreu, Tharni Vasavan, Adrian Timpson, Helen O’Neill

See publication

Redefining laboratory reference ranges for female reproductive and thyroid hormones

Authors: Helen C. O'Neill, B.SC., M.SC., PH.D. Tharni Vasavan, BSc, MSc, PhD, Adrian Timpson, PhD, Natalie Getreu, BSc, MSc, PhD

See publication

Meiotic Aneuploidy And Preimplantation Embryo Arrest Following In Vitro Fertilisation (IVF)

Authors: Teodora Popa, BSc, MSc, Helen C. O'Neill, B.SC., M.SC., PH.D.Colin Davis Mr, MBBS, MD, Christian S. Ottolini, BSc, PhD

See publication

Reduced accuracy of gold top blood collection tubes for reproductive hormone profiling in capillary blood samples

Authors: Natalie Getreu, Tharni Vasavan, Adrian Timpson, Helen O’Neill

See publication

Proudly working with

Our research is backed and guided by top-rated and accredited research bodies, dedicated to evidence-based science.

University College London HospitalsPrecision medicineRoyal Free London

Real-life research, for the modern woman

We publish novel research papers dedicated solely to female endocrinology and reproductive health outcomes.

The Reproductive Report 2026 is available!

Get the insights to your inbox now.

The Inequality report

The Inequality report

Amplifying the voices of real Black women, this report addresses the stark reproductive health inequalities Black women experience in comparison to other ethnic groups across the UK.

The Reproductive Report 2024/2025

The Reproductive Report 2024/2025

Presenting the findings from our novel dataset, we uncovered the most pressing reproductive healthcare challenges facing women today and current gaps in female health research. 

Proactive guide to getting pregnant

Proactive guide to getting pregnant

Jam-packed with all the information you need to start your conception journey, from fertility basics to treatment options.

egg

Want to join our mission?

With every test taken, we're one step closer to bridging the gender data and caregap. By taking one of our At-Home Hormone Tests, you're not only understanding your own body but you're allowing us to better understand the bodies of women worldwide.

We value your privacy

At Hertility, we know that privacy is a paramount consideration, particularly when it comes to personal health matters. Throughout your entire experience with Hertility, from taking our virtual health assessment to getting expert care, your personal information and data is kept safe. Please view our Privacy page for more information.

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