Final answer:
Hippocrates is considered the "father of medicine" and taught that food is medicine.
Step-by-step explanation:
The Greek physician Hippocrates (460-370 BC) is considered the "father of Western medicine." He taught his students that food is medicine, emphasizing the important role of nutrition in maintaining health and preventing disease. Hippocrates believed that diseases had natural causes from within patients or their environments, and he wrote the Hippocratic Corpus, a collection of texts that are some of the oldest surviving medical books.