Ombelet co-founded The Walking Egg, a non-profit organization that tackles global infertility in a holistic, multidisciplinary, and integral way.
Ombelet is the founder of the Genk Institute for Fertility Technology (GIFT)[5] and was chairman of seven international "Andrology in the Nineties" meetings.
Ombelet is the founder and editor-in-chief of "Facts, Views & Vision in ObGyn", an international PubMed-cited peer-reviewed journal for obstetricians, gynecologists, reproductive physicians, ethicists, basic scientists, and others who treat and research women’s health issues.
Since 1986, Ombelet has promoted intrauterine insemination (IUI) as a cost-effective and safe method of assisted reproduction in selected cases of moderate male and unexplained infertility.
In 2009, a new innovative simplified IVF system was developed by Professor Jonathan Van Blerkom from the Department of Molecular, Cellular, and Developmental Biology at the University of Colorado, Boulder, USA.