The metabolic management of diabetes in the late 19th century relied heavily on the clinical protocols established by Arnaldo Cantani, who argued that the total elimination of carbohydrates was essential to controlling glycosuria. His approach, which frequently required the strict isolation of patients to ensure dietary compliance, gained international attention as a rigorous alternative to traditional treatments of the era.
Academic and Professional Development
Born in 1837 at Lipová in North Bohemia, Cantani pursued his medical education at Charles University, completing his doctoral degree in 1860. By 1864, his expertise led the Italian government to appoint him to the Chair of Materia Medica and Toxicology at the University of Pavia. His career progressed rapidly in Italy, where he transitioned to head physician at the Ospedale Maggiore in Milan in 1867 after a competitive selection process. In 1868, he accepted a professorship in clinical medicine at the University of Naples, an institution where he remained active until his death in 1893.
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Take the IQ test →The Cantani Diet System
Central to Cantani’s medical practice was the theory that halting glycosuria provided the primary method for managing diabetes. He enforced an animal-based diet consisting of meat, fish, eggs, and fats, while strictly forbidding all dairy products due to their lactose content. In cases where the condition proved resistant, Cantani implemented fasting periods lasting up to nine months. To guarantee total adherence to these restricted regimens, he would occasionally lock patients in rooms, effectively monitoring their intake and preventing access to non-sanctioned food items. His methods were documented in specialized texts such as his 1876 work, Le diabète sucré et son traitement diététique.
Public Service and Research
Beyond his dietary research, Cantani was a pharmacologist and a significant figure in Italian political life. He attained Italian citizenship in 1877 and was appointed a senator of the Kingdom of Italy in 1889. His broader clinical research encompassed several major public health concerns of the period, including rabies, typhoid fever, and cholera. Furthermore, he investigated the pathological anatomy of diabetes, conducting microscopic examinations of organs from thousands of cases to document atrophy and fatty changes within the pancreas. He also introduced the therapeutic use of daily lactic acid doses, a method that notably influenced practitioners such as George William Balfour.
Fast facts
- Born: 1837, Lipová
- Died: 1893, Naples
- Citizenship: Kingdom of Italy
- Education: Charles University
- Senator of the Kingdom of Italy: 1889
- Member: German Academy of Sciences Leopoldina
Questions readers ask
What medical condition caused the death of Arnaldo Cantani?
He died from Bright's disease.
Did Cantani influence other medical researchers?
Yes, his dietary system influenced Bernhard Naunyn, and his lactic acid treatment influenced George William Balfour.
Achievements
- Held posts at University of Pavia


