Pierre Adolphe Piorry (31 December 1794 – 29 May 1879) was a French physician born in Poitiers.
He invented pleximetry (a method for the investigation of internal organs using percussion) and was the creator of medical terms toxin, toxemia and septicemia.
He studied medicine in Paris, where his instructors included Jean-Nicolas Corvisart (1755–1821), Gaspard Laurent Bayle (1774–1816), François Broussais (1772–1838), and François Magendie (1783–1855).
While still a student he was part of the Napoleonic Wars in Spain.
One of his better known poems was Dieu, L'Ame et la Nature (1853).Piorry thought that diabetics lose weight because of the amount of sugar they lose through urine.
His suggestion was for diabetics to consume large quantities of sugar.
His dangerous advice caused a death and was discredited as a diet treatment.