Geneticist & Women's Health Scientist; Clinical Assistant Professor at Keck School of Medicine of USC; Chief Scientific Officer at Harmonia Healthcare

Los Angeles, CA, USA
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Marlena Fejzo Biography

Dr. Marlena Fejzo is a Harvard-trained geneticist and women's health scientist whose research has contributed to the understanding of pregnancy sickness. Fejzo earned an undergraduate degree from Brown University in applied mathematics and a doctorate in genetics from Harvard University. She has published peer-reviewed articles on diseases affecting women, including ovarian cancer, breast cancer, and multiple sclerosis, and identified the first genes associated with uterine fibroids, nausea and vomiting of pregnancy, and hyperemesis gravidarum.

At the Keck School of Medicine of USC, Fejzo serves as a clinical assistant professor of population and public health sciences in the Center for Genetic Epidemiology, focusing on advancing women's health research. Her interest in hyperemesis gravidarum, a severe form of pregnancy sickness, stems from personal experience. While working at UCLA on ovarian cancer research, Fejzo began investigating the genetic basis of hyperemesis gravidarum, collaborating with 23andMe to publish findings linking nausea and vomiting of pregnancy to the placenta, appetite, and the hormone GDF15. She later published the first mutation in GDF15 associated with hyperemesis gravidarum and, in collaboration with Sir Stephen O'Rahilly and international researchers, identified mechanisms involved in pregnancy-related nausea and vomiting.

Fejzo's work has been recognized by TIME Woman of the Year, TIME 100 Health, the National Organization for Women Victoria Mastrobuono Award in Women's Health, the Forbes 50-Over-50 award in Innovation, and the inaugural BII & Science Translational Medicine Prize for Innovations in Women's Health. The BioInnovation Institute prize acknowledges researchers advancing women's health globally. Fejzo's research in women's genomic health includes the identification of genes for uterine fibroids and pregnancy-related nausea and vomiting.

Fejzo is involved in translating scientific discoveries into clinical practice. She and her team have received approval to conduct a clinical trial testing metformin, a diabetes medication known to increase GDF15 levels, to evaluate its potential in preventing or reducing hyperemesis gravidarum in patients with a history of the condition. Fejzo also serves as chief scientific officer for Harmonia Healthcare, a health platform focused on addressing the healthcare gender gap. With support from the Felix Family Foundation, Fejzo's team is working to identify early predictors of preeclampsia risk among pregnant women with severe morning sickness, with research aimed at preventing life-threatening pregnancy conditions. Through research, advocacy, and clinical leadership, Fejzo has contributed to shifting the perception of hyperemesis gravidarum from a psychological condition to a subject of scientific inquiry, impacting women's health worldwide.

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Speaker profile last updated by AAE Talent Team on 10/30/2026.

Marlena Fejzo Videos

Marlena Fejzo - TIME100 Health Panel

Marlena Fejzo - TIME100 Health Panel

‘Medical Gaslighting’ and Investing in Women’s Health panel with Marlena Fejzo, actress Halle Berry and Eli Lilly's Daniel Skovronsky.

Dr. Marlena Fejzo presents on GDF15 at #SMFM20

Dr. Marlena Fejzo presents on GDF15 at #SMFM20

Dr. Marlena Fejzo presented "Additional risk variant in GDF15 and a stronger maternal genetic influence linked to Hyperemesis Gravidarum" ...

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  • What topics does Marlena Fejzo speak about?

    Marlena Fejzo is a keynote speaker and industry expert whose speaking topics include Cancer, Female Leadership, Genetics, Health & Wellness, Healthcare, Influential Women, Medicine, Public Health, Research & Exploration, Women, Women's Health
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Marlena Fejzo is a keynote speaker and industry expert who speaks on a wide range of topics. The estimated speaking fee range to book Marlena Fejzo for your event is available upon request. Marlena Fejzo generally travels from Los Angeles, CA, USA and can be booked for (private) corporate events, personal appearances, keynote speeches, or other performances. Similar motivational celebrity speakers are Dr. Sharon Malone, Jennifer Weiss-Wolf, Bruce Bekkar, MD, Dr. Connie Mariano and Daisy Robinton. Contact All American Speakers for ratings, reviews, videos and information on scheduling Marlena Fejzo for an upcoming live or virtual event.

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