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They're been eating lead oxide, in none insignificant quantities, for years bless em.
For the uninitiated in chemistry, lead oxide will dissolve into lead chloride in the hydrochloric acid in a person's stomach, which is water soluble and will then pass into their bloodstream causing neurological damage.
Lead chromate* is also used to produce red ("pakistani") paprika.
>chromic acid is also poisonous.