There are 6 causes: Air, exercise & rest, elimination & replenishment, food & drink, sleeping & remaining awake, emotion
These are called causes, because they produce & maintain health …
Every medical cure occureth either internally or externally. Internal cures are those which are introduced into the body by the mouth, nose, ears or anus … External cures are for example bandages, poultices, plaster.
Surgery is of two sorts, either cutting, sewing or cauterising the flesh; or setting & bandaging the bones …
Hugo de Sancto Victore