The Master’s excellent article,
Is it "feed a cold, starve a fever" or vice versa? And should you?, just doesn’t quite go far enough. I understand that He just can’t go on making things up as He goes along, but I’ve no such inhibitions.
Feed a cold - Right, see below.
Feed a fever - The logic starts with assuming that a fever is a good thing (within reasonable limits). The human body has evolved with this defense mechanism to fight off pathogenic infections. Seems a number of these viruses are very very sensitive to temperature. A virus that thrives at 98.6ºF will quickly die off at 100.9ºF.
The other thing the human body does is it makes antibodies to fight the infection. These antibodies are made of protein, which in turn is made of amino acids. As The Master points out, “you certainly don’t want to stress your system” so we certainly don’t want the body to be destroying proteins to free up the necessary amino acids. The other source for these amino acids is from the food we eat.
Ergo, feed a fever, the body needs the raw materials to fight the infection. The same logic applies to colds and flu, and really just about anything from broken legs to raking wounds.
One thing the “herbal tea” whack-o’s advocate that is actually right on is holding the tea cup up under your nose. Breath the hot steam into your nasal passages simulating a fever. That way, when you’re cured, you can stomp around swearing Peppermint Tea cures Everything.