"Researchers in the Netherlands gave volunteers the liquid caloric equivalent
of a fast-food hamburger and fries. Then ran blood tests to check for two
substances that fight bacteria and viruses. Six hours after the meal, levels
of Interferon Gamma, which combats cold viruses, rose fourfold. There was
little rise, however in Interleukin-4 levels, which battles fever-causing
bacterial infections. But after overnight fasting, Interleukin-4 levels went
up fourfold. Meanwhile the Interferon Gamma fell 83% of its normal level.
Scientists need to learn more about immune response to food. But for now it
may help to FEED A COLD AND STARVE A FEVER"

Think I got this from an old copy of a Tufts University Nutrition Letter from the 1990s.

jackD