Q: Just a few months ago, I learned that avoiding gluten dramatically improves my depression and achy joints. I know the basics of staying away from obvious sources, such as croutons, bread, stuffing, and regular baked goods. However, this will be my first holiday season avoiding gluten, and I’m wondering if you could clue me in on hidden or not-so-obvious gluten sources to watch out for during the holidays. -Vicky M., Pittsburgh