I don’t know whether that is an apt discription of the benefits of fasting on the immune system or not. I don’t know if fasting actually puts mild stress on the immune system, but fasting does allow the secreting glands of the digestive system to have some down time and it allows the intestines and stomach time to completely empty anything that has been mixing around in there but hasn’t exited, before adding something new. It probably starves some of the bacteria that feed off sugar, if they have short life spans. And as was previously said it is natural for dogs to eat this way, so it probably does help to keep their system balanced.
