During World War II, Charvát was arrested by the Gestapo for resistance activity and imprisoned in several concentration camps.

Charvát was the founder of Czech endocrinology and also made contributions in the fields of stress, immunology, and medical cybernetics.

Throughout his career, Charvát treated several important personalities, including politicians, artists, and prominent individuals.

He also received numerous awards and was a member of the Advisory Board for Science and Technology in the United Nations.

Josef Charvát was on 6 August 1897 in Prague-Vinohrady[1] into a low-income family of a trained blacksmith and locksmith, an employee of Elektrické podnikých in Prague.

[6] In 1922, he was elected to the leadership of the Union of Scouts, then in 1932 as its deputy mayor, and after the departure of Edvard Beneš from the position of mayor in 1935, he performed this function until the merger with Junák, when he retired from active service and was elected honorary commander.

[10] On 1 September 1939, he was arrested by the Gestapo for resistance activity and imprisoned in Pankrác prison and the Dachau and Buchenwald concentration camps.

Charvát knew Gustav Adolf from the Moot scout meeting in Sweden in 1937.

Still, this expedient story was refuted by the investigation of the Australian journalist WH Burke, summarized in a book entitled Čtyřiatřicet.

[19] He supported the tradition of an ethical, scientific and synthetic view of the patient and the entire field of internal medicine.

[21] He treated several important personalities from among politicians, artists and other prominent people (e.g. Antonín Švehla, Edvard Beneš, and Marta Gottwaldová).