There's a pretty clear nuance in my post where I was addressing things the immune system can handle. Not poison that accumulates in the body.

Also not true for things the immune system can handle. Many pathogens damage your immune system, not help it, even if you recover.

Which we also used to know less about, but we've now discovered that MS is long-mono and Lupus is long-flu, as well as shingles being long-chickenpox.

Lead paint flakes are not an allergen; they're a toxin. Your nick checks out.