Research on HG's short- and long-term effects is desperately needed and needed now. We need to do more to find a cure for this disease that has such devastating effects on a growing number of soon-to-be mothers.

- Congressman Xavier Becerra (CA)

Current Research

Currently, the HER Foundation is researching many aspects of HG but focused on:

These HG researchers need your help regardless if you have had or have not had HG. Please join our studies, support our work, and help make progress for tomorrow’s mothers and babies.

Current Poll

Why More Research Is Needed

Hyperemesis gravidarum (HG) was first recognized several centuries ago and was thought to be related to a physiological cause such as toxins, ulcerations, or infection. However, in the 20th century, it was erroneously decided that HG was caused by psychological conflicts instead. Limited research and outdated theories have fostered this belief for over a century, resulting in unnecessary suffering and financial loss for too many women and their families, not to mention the adverse impact on the health of both mother and baby. 

Now, our team has discovered genes that influence or cause the development of HG! Our HG genetic findings change everything. We are beginning to finally understand the reason for HG symptoms and individual treatment response. We need to expand this research as well as validate the treatments and tools that will improve the care of the outcomes of mothers and their children.

With rare grant funding given for any HG research project including these groundbreaking genetic studies with Dr. Marlena Fejzo, the world's leading scientist on HG, please support our work.

Our Research

The HER Foundation is the leading non-profit organization globally dedicated to research and education of hyperemesis gravidarum (HG) causes, treatments, and impact. The ultimate goals of our research are to 

  • increase awareness and utilization of medical treatment
  • prevent potentially devastating consequences of HG, and 
  • equip families and health professionals with the information they need to effectively manage HG, and
  • give mothers and babies a chance at a healthy future.


Research Findings

(Collaborative projects of the HER Foundation with Dr. Marlena Fejzo (Board Member and Research Advisor/Liason), USC & UCLA, and other universities)

**Note: Nearly all of these studies have been fully funded by donations to the HER Foundation and private donors or partnerships.


Prevalence, Recurrence & Reviews

Risks & Outcomes (Complications/Impact)

Treatment & Management


Women with severe nausea/vomiting during pregnancy (HG)


Family & Friends

Supporters and advocates for women with severe nausea/vomiting of pregnancy (HG)


Health Professionals

Professionals and researchers interested in effective management of HG



Women experienced with HG who want to help HER and other women with HG.