Marga Sáenz-Herrero was awarded with a degree in Medicine at the University of Valladolid. She received her PhD in Medicine in 2004 from Complutense University in Madrid. She is a specialist in Psychoanalytic Psychotherapy by Comillas University and specialist in Integrative Psychotherapy by Alcalá University. In 2009, she received a Specialization in Forensic Psychiatry.
She has been an Associate Professor at Complutense University until 2005 where she taught undergraduate and postgraduate students. Since 2009, she is teaching medical students at Basque University in Vitoria. She has been also Tutor of Psychiatric Residents since 2009 at Alava University Hospital, and she is currently tutoring Medical Residents in Psychiatry at Cruces University Hospital in Bilbao.
She has worked with Professor López-Ibor at San Carlos University Hospital in Madrid. During this period she received a grant to stay at the Eating Disorders Program with Professor Katherine Halmi, at NewYork Hospital, USA.