"Johann Heinrich Lahmann (30 March 1860 – 1 June 1905) was a German physician who was a pioneer of naturopathic medicine. He was a native of Bremen, Germany.
He earned his medical doctorate at the University of Heidelberg, and after graduation became a general practitioner in Stuttgart. On 1 January 1888, he opened a sanatorium called the "Physiatric Sanatorium" at Weißer Hirsch, outside of Dresden. This institution would eventually become well-known internationally.
Lahmann was influenced by the methods used by Vincenz Priessnitz (1799-1851) and Johann Schroth (1798-1856), both pioneers in the field of alternative medicine. He eventually turned away from traditional medicine, and was disdainful of drugs and unnatural medications. Lahmann stressed the importance of diet, exercise and fresh air, and was an ardent practitioner of physiotherapy and hydrotherapy. " - (en.wikipedia.org 24.06.2021)