Despite his extreme uncleanliness his health remained remarkably intact for most of his life. Medical experts in Iran observed that while he tested positive for a parasite infection called trichinosis the condition appeared asymptomatic. One public health professor speculated that his unconventional immune system may have adapted to his environment.
You’re right but:
I’d bet on causation here.
More likely is the extreme stress of him thinking he had violated the superstition’s rules. At 94 it doesn’t take much to push a person over the edge.
“I’m indestructible…”
Not sure if I’d bet on it but I genuinely don’t think it should be ruled out