Certain types of bread mold were used in the initial development of antibiotics like penicillin. Of course, this happened better when bread was not filled with preservatives.

“In 1928, Alexander Fleming accidentally discovered penicillin when he found mold growing on a discarded petri dish. The mold itself was not the miracle. Fleming discovered that the mold that had grown had killed the Staphylococcus aureus that he’d been growing in that particular petri dish.” (see attached link)

Mold is just fungi. All fungi serve some purpose even if only to decompose food back into the environment.

none? for some people is deadly!!