As a kid, I remember being taught by the (Catholic) church that my parents attended that the origin of restriction was due to trying to avoid getting the Tsetse

As a kid, I remember being taught by the (Catholic) church that my parents attended that the origin of restriction was due to trying to avoid getting the Tsetse fly parasite, which I guess could have been potentially contracted via poorly prepared pork. I have no idea how accurate this explanation is, but it always seemed at least plausible to me that some religious dietary restrictions might have been codified as a way to try to avoid collective health risks at a time; it doesn't seem crazy they might have noticed a pattern people getting sick after eating certain foods and made rules on how to avoid that, and over time they became part of the religious traditions. I'm not religious now though, so it's also possible that my view of what would be a plausible explanation for religious rules is biased.