Tricinosis was commonly found in pork before modern food prep. It’s likely why it was a forbidden meat in many middle eastern cultures. Look at the list of animals that spread the disease — it’s not like ancient Jews would be eating walrus.
https://www.cdc.gov/trichinellosis/about/index.html
A lot of these ancient traditions came about because someone got sick from eating or doing something.
Kate Bush “Ariel”. What a disappointment that was.