Puberulic acid and it’s analogs have strong antimalarial properties ....but could be very toxic...”natural” ain’t always safe....
They failed the Kobayashi Maru test.
But age had nothing to do with it, eh?
Sounds like someone wants to discredit the red yeast extract for some reason.
They probably also drank water and ate a meal, maybe with rice in it before they died as well.