Johan "Hans" Ormel (born 1946 in Wageningen) is a psychiatric epidemiologist known for his scientific work in clinical and health psychology, psychiatry, gerontology and medical sociology.
Ormel graduated in 1964 from the HBS-B in Veenendaal, Netherlands, and received his bachelor in sociology from the University of Groningen in 1968.
He was the principal investigator in the large-scale research projects Myocardial Infarction and Depression-Intervention Trial (MIND-IT) and First-line Intervention Study (INSTEL).
[2][4] In 2001, Ormel and his Rotterdam colleague Frank Verhulst founded the long-term research project TRAILS (TRacking Adolescents’ Individual Lives Survey).
[5] This research tracks the physical and mental development of over 2500 adolescents in the north of the Netherlands and has led to results for preventive and curative treatments.