Johann Heinrich Lahmann (30 March 1860 – 1 June 1905) was a German physician who was a pioneer of naturopathic medicine.
He earned his medical doctorate at the University of Heidelberg, and after graduation became a general practitioner in Stuttgart.
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.
Lahmann stressed the importance of diet, exercise and fresh air, and was an ardent practitioner of physiotherapy and hydrotherapy.
[1] Lahmann recommended a vegetarian diet[1] of fruits, vegetables, nuts, whole grain bread and dairy products, and believed in limiting one's intake of table salt and liquor.