Faithslanding, I suppose many of us have grappled with these questions.
First, I often remind myself that the Bible was written for me...but not ONLY for me. So in regard to food, we can think about all of the people who have lived since the first century and how the Book applies to all of us.
Most have been relatively poor and had few food choices. In other words, they ate what they had. In areas near the sea, this often included fish. In inland areas, for many, it included a bit of meat. For the affluent, more animal products were available. It seems that most ate a starch based diet. The Book proclaims liberty in regard to this subject and many others.
Galatians 5.1 Stand fast therefore in the liberty wherewith Christ hath made us free , and be not entangled again with the yoke of bondage. (KJV)So, IMHO, you are free to consider food as your medicine and to eat for health.
You are free to eat the foods that you think are best for health. For some people in some parts of the world, this has/does include animal products...because that is what they had/have.
For many of us, living in the hear and now, we believe that omitting the animal products is good for health and we do it. This reminds me of the old apostle's advice to young Timothy. He advised him, for the sake of his stomach, not to drink only water but to also drink a little wine (1 Timothy 5.23). In other words, he was free to ingest something to benefit his health and I believe that we are too.
Related to the Bible, the only foods that I consider strictly out of bounds are those from strangled animals and blood (Acts 15.29).
Unfortunately, many Christians disregard their health in regard to their choices about food. I hope more will wake up and take care of the wonderful bodies God has given them.