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 But the current healthcare system still relies on a handful of small-scale studies, with out-of-date data, to inform generic approaches to female health.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.

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 feamle reprodcutive 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 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 

The Reproductive Report 

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.

Meet our world-renowned research team

Made up of specialists and leaders across fertility, endocrinology, reproductive health, sexual health and genetics.

Dr Helen O’Neill

Dr Helen is a lecturer in reproductive and molecular genetics and a leading expert in reproductive science. She has a Masters in Prenatal Genetics and Fetal Medicine and a PhD in Stem Cell Biology from UCL. Her research focuses on pre-implantation embryo development and the use of CRISPR genome editing to assess understanding and treatment of disorders of infertility.

Dr Helen O’Neill

CEO, Founder

BSc (hons), MSc, PhD

Dr Natalie Getreu

Dr Natalie is an ovarian biologist with expertise in bringing scientific discovery to clinical practice. She has a Masters in Reproductive Science and Women’s Health and a PhD in Fertility Preservation from UCL. Her research focuses on ovarian tissue freezing, which allows women facing cancer treatment to be able to preserve their fertility.

Dr Natalie Getreu

COO, Co-Founder

BSc (hons), MSc, PhD

Dr Srdjan Saso

Dr Srdjan Saso is a Consultant Gynaecologist and Gynaecological Cancer Surgeon at Imperial College NHS Trust. Currently a co-investigator at the UK Uterine Transplantation team, he also sits on the Scientific Board of the International Society of Ultrasound in Obstetrics and Gynaecology.

Dr Srdjan Saso

Consultant Gynaecologist and Gynaecological Cancer Surgeon

MRCS MRCOG DIPM PhD

Dr Benjamin Jones

Dr. Jones is an Obstetrician, Gynaecologist and Fertility Specialist with a focus on reproductive medicine, uterus transplantation and social egg freezing. He has worked at Queen Charlotte’s & Chelsea, Hammersmith and St Mary’s Hospitals, and IVI London.

Dr Benjamin Jones

Obstetrician, Gynaecologist and Fertility specialist

MBChB BSc (Hons) MRCOG PhD

Dr David Crosby

Dr. David Crosby is a Consultant Obstetrician & Gynaecologist at the Irish National Maternity Hospital. He is the Clinical Lead of the Ireland East Regional Fertility Hub and Clinical Lecturer and Assistant Professor at University College Dublin.

Dr David Crosby

Consultant Obstetrician & Gynaecologist

MB BCh BAO MA MD MBA MSc MRCPI MRCOG ECMGG

Dr Jennifer Barcroft

Dr. Jen is a Specialist Obstetrics and Gynaecology Doctor with a passion for reproductive medicine. She works with women of all ages with a focus on IVF and fertility treatments, sports and reproductive health and symptom management.

Dr Jennifer Barcroft

Specialist Obstetrics and Gynaecology Doctor

MBChB BMedSci MRCOG

Dr Kirsty Munro

Dr. Kirsty Munro is an Endometriosis and Laparoscopic Surgery Specialist. She is currently the lead clinician for Risk Management with Gynaecology and Deputy Lead for the EXPPECT Edinburgh Endometriosis Centre.

Dr Kirsty Munro

Consultant Gynaecologist & Endometriosis Specialist

MD MRCOG

Dr Sugha Murugesu

Dr Sugha Murugesu graduated with First Class Honours from Sidney Sussex College, Cambridge University and is now a specialist Obstetrics and Gynaecology Registrar as well as a clinical fellow at Imperial College. Her research focus is technology applications in Gynaecology.

Dr Sugha Murugesu

Clinician

MBBChir MRCP MRCOG

Dr Lorraine Kasaven

Dr Lorraine Kasaven is a Specialist Obstetrics and Gynaecology Doctor with a BSc in Medical Sciences from the University of St Andrews, an MBChB from the University of Manchester and a PGCert in Medical Leadership, Research and Education at the University of Cambridge.

Dr Lorraine Kasaven

Clinician

BSc (Hons) MBChB MRCOG PGCert

Dr Silvia Nedelcu

Dr Silvia Nedelcu completed her training in Obstetrics and Gynaecology in Romania. She is currently an Obstetrics and Gynaecology Registrar, as well as undertaking an MSc in Reproductive Sciences at University College London Hospital. Her research interests include reproductive endocrinology and IVF.

Dr Silvia Nedelcu

Clinician

MD MSc

Dr Saaliha Vali

Dr Saaliha Vali obtained a BSc degree with honours in Reproductive and Developmental Sciences from Imperial College London and an MBChB from the University of Liverpool. She is currently a Clinical Research Fellow and doing a PhD with Imperial College London. Her research interests include fertility preservation.

Dr Saaliha Vali

Clinician

MBChB BSc (Hons)

Dr Tharni Vasavan

Dr Tharni is a scientific researcher with an MSc in reproductive science from University College London and a PhD in women’s health from King's College London. An author of multiple publications on foetal cardiac dysfunction during pregnancy, an oral presenter at the RCOG annual academic meetings and British Maternal and Foetal Medicine Society.

Dr Tharni Vasavan

Head of Scientific Product Research

BSc (hons), MSc, PhD

Zoya Ali

Zoya is a scientific researcher with a Bachelor's degree in Biotechnology and a Masters in Prenatal Genetics & Foetal Medicine from University College London. Her research interests are reproductive genetics, fertility preservation, gynaecological health conditions and sexual health.

Zoya Ali

Senior Scientific Research Associate

BSc (hons), MSc

Bríd Ní Dhonnabháin

Bríd is a Senior Scientific Researcher at Hertility, with a BSc (Hons) in Physiology from UCC and a Masters in Reproductive Science and Women’s Health from University College London. Her research interests focus on fertility preservation, tissue cryopreservation, foetal and maternal medicine and sexual health education.

Bríd Ní Dhonnabháin

Senior Scientific Research Associate

BSc (hons), MSc

Bethan Davies

Bethan is a research and development scientist with an MSc in Analytical and Forensic Science. A registered scientist with the Science Council, Bethan is currently coming towards the end of her PhD under the specialism of toxicology. Bethan’s research areas are analytical analysis for female sex hormones.

Bethan Davies

Research and Development Scientist

BSc (Hons), MSc, RSci

Dr Laura Convertino

Dr. Laura Convertino is PhD candidate in cognitive and computational neuroscience at UCL and a Clinical Fellow in Neurology at the National Hospital for Neurology and Neurosurgery. She has been awarded a 4-year MRes/PhD scholarship by the Leverhulme Trust EcoBrain Doctoral Training Programme and is a Co-founder of Science for Democracy.

Dr Laura Convertino

Clinician

MD, MBChB, MSc, MRes

Dr Adrian Timpson

Dr Adrian is research scientist in the department of Genetics, Evolution and Environment UCL. He is an expert in bespoke statistical modelling, data science and machine learning, with a particular focus in Bayesian inference. He has published in a diversity of disciplines, including past-population dynamics; human cultural and genetic evolution; stable isotope analysis of archaeological material; and the evaluation of forensic DNA at crime scenes.

Dr Adrian Timpson

Machine Learning & Data Scientist

BSc (hons), MSc, PhD

Dr Matt Hobby

Dr Matt Hobby

Director of Data & AI

PhD, MEng (Hons), CEng

Lucinda Lawrie

Lucinda is a data analyst with a special interest in health data, particularly the field of reproductive health. She holds a BSc in Statistics from Newcastle University. Lucinda is passionate about using data to make positive real world changes and to close the gender data gap.

Lucinda Lawrie

Data Analyst Manager

BSc (Hons)

Sofia Rodrigues Vaz

Sofia is a data analyst with an engineering background. She holds a BSc and MSc in Engineering Physics from Instituto Superior Tecnico in Lisbon. Sofia is particularly interested in using data as a tool to create positive change and improve people’s lives.

Sofia Rodrigues Vaz

Data Analyst

BSc, MSc

Lorna Brightmore

Lorna Brightmore

Lead Machine Learning Scientist

PhD, MMATH (Hons)

Dave Walker-Cornes

Dave Walker-Cornes

Senior Data Engineer

BSc

Chavini Ranasinghe

Chavini Ranasinghe

Clinical Operations Associate

MBBS BSc (Hons)

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