Hippocratic Corpus on diet and art of medicine

“But the reason why the art of medicine became necessary was because sick men did not get well on the same regimen as the health. . . . What fairer or more fitting name can be given to such research and discovery than that of medicine, which was founded for the healthy, preservation and nourishment of man and to rid him of that diet which caused pain, sickness and death. . . . I do not believe anyone would ever have looked for such a science if the same regime were equally good for the sick and healthy” (On Ancient Medicine, #3 & 5 [Lloyd].