EDUCATION
2015 Specialist Reproductive Medicine
2014 Specialist in Obstetrics and Gynecology Auth. ID 00SW4
2012 DMSc in Medicine, University of Copenhagen (UCPH)
2001 MD, UCPH
EMPLOYMENT
2021- Chair Professor UCPH & Chief Physician, Dept. of ObGyn, Hvidovre Hospital (HH)
2019-2021 Clinical Professor UCPH & Chief Physician, Dept. of ObGyn, HH
2016-2019 Chief Physician Fertility Clinic 50% – Research 50% RH
2014-2016 Department doctor, Fertility Clinic, RH 2014 Maternity leave 3 months
2013-2019 Associate Professor, UCPH
2011-2014 Assistant Chief Editor AOGS
2009-2014 Specialist training Ob/Gyn RH
2005-2009 PhD student Fertility Clinic RH 36 months, maternity leave 17 months
2004-2005 Gimbie Hospital, Ethiopia. Humanitarian work 5 months
2004 MD Oncology RH 6 months
2003-2004 Maternity Leave 6 months
2002-2003 Introductory year ObGyn, Zealand Region (ZR)
2001-2002 Basic clinical training, ZR
SCIENTIFIC ACTIVITIES
Thesis
2012 DMSc in Medicine, University of Copenhagen: Secondary Miscarriage and H-Y immunity. Hum Re-prod Update.2011;17(4):558-74.
Awards
2025 Inaugural annual prize by the Cross-party alliance for women’s health
2025 Profiled in The Lancet Ob/Gyn Inaugural Issue September 2025
2023 Best clinical project (Copenhagen Pregnancy Loss Study) in Denmark (innovation)
2013 Best doctoral thesis 2012 (DMSK) 2013 Best thesis in OB/GYN 2012 (Karl Brogaards prize)
Patents
Pending: PCT/EP2024/076792, EP24160940.3, EP24187182.1, EP24183863.0, EP24171923.6
Research Funding >130 mio DKK as applicant
Publications
172 pubmed indexed articles. H-index, H-52, i10: 118 (Google Scholar). Orcid ID 0000-0003-2106-8103
Research leadership
2013- I established my own interdisciplinary research group to understand the underlying biology of re-productive & women’s health & disease to provide diagnostics, prognostics, and treatments. The strategy has been successful as we have established infrastructure for high-impact research and innovation. We attract international talent (>100 applications for positions), I was awarded the first clinical Biostudio project from BII, we are the first clinical users at the AI Supercomputer Gefion analyzing our almost 1PB of data, I have been awarded 4 BRIDGE fellows and we have 2 TUH Associate Professors in the group.
Supervision
Post Docs: 9 incl. 4 NNF-funded BRIDGE excellence fellows, with Profs. Brunak, Hoffmann, Brickman & Zylicz
PhD students: 19 of which 10 are completed Other supervision: 35 bachelor or master students including 18 pre-graduate research year students
Assessments PhD 10, Associate Professor: 22, Professor: 16
Primary investigator (PI)
1. Ongoing RCTs: HCQ/Placebo for RPL, DYSCOVER vaginal microbiome transplantations
2. BII Faculty Project Early diagnosis of Pregnancy loss (PL). Total of 1,500 whole genome sequenced PL trios (fetus, father, mother), detailed biobank and database. Goal: PL diagnostic tool
3. Thematic non-diabetic endocrinology grant SURVIVE. Increase collection of the above to 3,000 PL trios to understand the endocrinology behind PL
4. Pathophysiology of RPL – disease trajectories (Danish registries) and the Danish RPL unit
5. Microbiota in Reproduction. Total of 35,000 microbiota samples collaboration with Center for Transla-tional Microbiome Research at Karolinska Institute
6. SARS-CoV-2 in Pregnancy and Childbirth (n=5,244)
PI of parts of
1. ReproUnion 3.0 an EU/INTEREG project with public-private partnership with 11 hospitals, universities, and industry partners. Funding 25 mio Euro
2. Genetics in Women’s Health. Copenhagen Hospital Biobank, DBDS & deCODE (n~400,000)
POSISITIONS OF TRUST
2025- Member of The International Advisory Board the Lancet Ob/Gyn & Women’s Health
2025- Chair of The Clinical Academic Group: Women’s Health in a life course Perspective
2024-Co-Founder LuluHealth. A company focusing on wearable for tracking menstrual cycle
2023- Board member Copenhagen Medical Society www.dmsk.dk
2022- 2024 Coordinator European Society Human Reproduction and Embryology SIG Implantation and early pregnancy www.eshre.eu 2021- Executive Board ReproUnion www.reprounion.eu 2019- Steering committee, Nordic Center for Women´s and Reproductive Health
2019- Steering committee Copenhagen Hospital biobank
2018- Steering group postgraduate PhD Program “life cycle in medicine” UCPH
2014- Co-Founder OvaCure www.ovacure.org. NGO focused on treatments for ovarian cancer
2005- Founder and Chairperson Maternity Foundation www.maternity.dk Aim: Saving lives in childbirth. De-veloped the safe delivery platform used by >500,000 health care workers in >70 countries.
PUBLICATION LIST
Below are listed selected publications from 2023-2025 covering a wide range of women´s diseases.
1. Wrønding T, /20 authors/, Nielsen HS. The Lancet Microbe 2026 in press
2. Árnadóttir G, /37 authors/, Nielsen HS & Steffansson K. Nature 2025; 642(8068):672-681
3. Berntsen S, /18 authors/, Nielsen HS & l.C. Freiesleben N. Nature Medicine 2025; 31(6):1939-1948
4. Venkatesh SS /15 authors/, Nielsen HS, / 32 authors. Nature Genetics 2025; 57(5):1107-1118
5. Westergaard D, /38 authors/, Nielsen HS. Nat Genet. 2024; 56(8):1597-1603
6. Oddsson A, /8 authors/, Nielsen HS, /27 authors/, Stefansson K. Nat Genet. 2024;56(9):1804-1810
7. Steinthorsdottir V, /25 authors/, Nielsen HS & Stefansson K. Nat Struct Mol Biol. 2024; 31(4):710-6
8. Hugerth LW, /7 authors, Nielsen HS & Schuppe-Koistinen. Microbiome. 2024;12(1):153 (p1-16)
9. Hartwig TS, /17 authors/, Nielsen HS. The Lancet 2023; 401(10378):762-771
10. Solé-Navais P, / 71 authors/, Nielsen HS, /11 authors/ Nat Genet. 2023; 55(4):559-567
