Post 80 of Study: Hebrews 13:9

⁹ Do not be carried away by all kinds of strange teachings. It is good for our hearts to be strengthened by grace, not by eating ceremonial foods, which is of no benefit to those who do so.

Hearts strengthened by grace, not by ceremonial foods. I think this means “eat normal food for physical strength, don’t think eating something ritual or Kosher or blessed is better for you spiritually. Get your spiritual and emotional strength from grace, not by thinking you are getting some kind of superior strength or power from food some person has called blessed or better or special."

Or vegan or gluten free or whatever, I would add. If that is your choice, go for it; just don’t tell everyone and don’t tell us you’re a better person for it.

That said, dietary restrictions are necessary for health; we eat far too much and far too much of certain things in the U.S., and gluten does affect people. We could eat less meat; I generally only eat it once a day or less because of health, the impact on the environment, and the cost. 

But they are not necessary for your spiritual health. Get that from grace.