On 1 January 2015 the Prague Psychiatric Center was transformed into the National Institute of Mental Health in Klecany, The Czech Republic.

During his studies, he collaborated with Professor Jan Štěpán, one of the founders of Czech osteology, at the Institute of Biochemistry.

[7] In 1982, he defended his PhD thesis in the field on neuroendocrinology: Some Endocrine Aspects of Lithium Prophylaxis (Charles University, 1981).

In 1993, he was the opponent to Professor Karel Malý for the post of chancellor of Charles University.

He is an honorary editor of Neuroendocrinology Letters (since 1997) and member of the editorial board of the International Journal of Psychiatry in Clinical Practice (since 1998).

In 1996, Höschl unsuccessfully ran for election to the Senate of the Parliament of the Czech Republic.