Gezundhajt was born in France and studied Enunciative Linguistics at the University Paris 7 until 1988. She received her Ph.D. in French linguistics from the University of Toronto in 1995 and has taught at several universities in Toronto, including Ryerson University, York University and U of T. She specializes in the morphology of adverbs and her work has been cited in various journals and books such as Structure du Français Moderne by Pierre Léon and Parth Bhatt. She has created several websites dedicated to the study of linguistics. Among them, "Sur Les Sentiers de La Linguistique" offers a comprehensive introductory guide to French linguistics. She is also a licensed hypnotherapist and has written on the evolution of the historical origins of hypnotism.
- "Henriette Gezundhajt". York University Faculty Profile.
- "Henriette's Home Page". Computing in the Humanities and Social Sciences, University of Toronto.
- Léon, Pierre; Bhatt, Parth (2005). Structure du français moderne: Introduction à l'analyse linguistique (in French) (3rd ed.). Canadian Scholars’ Press. pp. 159, 268. ISBN 155130242X.
- "La linguistique". Université du Québec à Montréal (UQAM) (in French).
- Gezundhajt, Henriette. "An evolution of the historical origins of hypnotism prior to the twentieth century: between spirituality and subconscious". Wiley Online Library.