Organon §262
The best regimen for acute illness involves satisfying the patient's cravings, within moderate bounds, along with avoidance of mental exertion and emotional shocks.
On the other hand, in febrile diseases (except in cases of mental confusion), since the subtle, unerring, internal sense of the here very lively, instinctual sustentive drive of life decides so distinctly and definitely, the physician simply needs to advise the patient's relations and attendants to put no obstacle in the way of this voice of nature, be it by the denial of enjoyments that the patient urgently demands or by detrimental proposals and persuasions.