Ancient Egyptians treated some patients by eating moldy bread, and no one understood why. Until 1928, Alexander Fleming discovered that penicillin had a great effect as an antibiotic in bacteria.#archaeohistories pic.twitter.com/3AftGm8guc

— Archaeo - Histories (@archeohistories) December 30, 2021

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What is the relationship of bread to the subject? “When bread rots, it secretes a fungus called Penicillium, from which penicillin, the most famous antibiotic used to treat some types of bacteria, is derived.

— Archaeo - Histories (@archeohistories) December 30, 2021

(I have read that the Egyptians in some cases reportedly did apply moldy bread to certain wounds. I’m not sure how often it successfully worked, though. And not sure about the eating part.)