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general::
Phrase(s): Feed a cold and starve a fever.
Prov. You should feed someone who has a cold, and withhold food from someone who has a fever.; (or, interpreted differently) If you feed someone who has a cold, that will ward off a fever. • Jill: I don’t feel like going out to lunch with you. I have a cold. Jane: All the more reason you should get something to eat. Feed a cold and starve a fever, you know.
McGrawhill's American Idioms And Phrasal Verbs