"These warnings were based on the God Yahweh's working knowledge of the germ theory of disease and the modern human body."
Or, you know, it could have been another attempt in a long line of such attempts for the Jews to separate themselves from whoever happened to be enslaving them at the time so that they could keep some sort of cultural identity and not end up being folded into another culture.
You'll notice that a good many of these prohibitions deal with diet and appearance, two things which are tied closely to a culture. By not doing what the larger culture they existed in was doing, the early Jews effectively kept themselves from "going native," as it were, and were able to keep their own cultural identity.
"Evidently mixing certain fibers together to make clothing caused the human body to contract certain skin diseases if worn."
Evidently, huh? Lets see this "evidence" you think exists.
Aside from some extremely sensitive individuals, who are typically allergic to the chemicals in the fabrics and not the fabrics themselves, I'm not sure how this would work.
"These warnings of Yahweh's still stand today if these same fibers are being mixed to create our clothing."
They still stand, but nobody takes any notice of them. Much like they take no notice to damn near anything else that's prohibited.
