wiflib - you are so right. I have been low carbing for 4 years, the past 3 years I have managed to dodge colds and flu when everyone else around me were dropping like flies.
I feel that my immune system is stronger now than ever before, I eat fresh, home cooked food, I have collected berries, including elderberries* and frozen them "straight from the forest" for the winter months ahead.
I have my daily dose of coconut oil, which is supposed to be antiviral.
I feel very confident that I will get through the cold season without catching any nasties, so far it has worked.
*Google Sambucol, its a remedy to boost the immunen system, I prefer to eat elderberries instead.