90% sureThese words were traced back to where they first appeared. That source is listed below.
What turned up
From the genuine Hippocratic Corpus, Of the Epidemics, Book I, Ch. 2 — standard English rendering (cf. Francis Adams' 1849 translation used across the corpus on Wikisource/Wikiquote). Distinct from the debunked 'Let food be thy medicine' and 'walking' misattributions.
Work
Of the Epidemics, Book I
Occasion
c. 400 BCE · ancient Greece (Hippocratic school, Cos/Thasos) · guidance for physicians treating patients, part of the Hippocratic Corpus
Sources checked
en.wikiquote.orgChecked using claude-sonnet-5, 21 August 2026Quotes section: Of the Epidemics, Book I Ch.2, distinguished from the page's Misattributed section