I'll buy that. Ever since I was a kid I've been eating whatever weird food I could fine including live earthworms on more than one occasion. I have a pretty good immune system in that I rarely get sick and if I do it never seems to last all that long. Plus I only have two allergies that I know of and both are to antibiotics.
In some small way I thank my eating habits for providing this measure of immune protection and lack of bs allergies.