Isn’t the saying feed a cold, starve a fever…?
Anyway, sounds like an old wive’s tale. I don’t think IF really has much to do with getting over a cold faster. I mean, anything is possible and the body is really complicated, but you probably won’t find any hard evidence.
I’m too tired/lazy to look it up now, but I read an article about fasting and chemotherapy, if I recall it was a small study, anyway-it said basically that ppl that fasted the days prior to chemo/radiation had less severe effects/symptoms then ppl who did not fast. Something to do with the body’s ability to regenerate, probably the whole autophagy…I’m sure you can find that article somewhere on line, but according to that and also early fathers of medicine fasting is the cure to all illness or something to that shocking effect 😅